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The genus Baruscapillaria Moravec, 1982 has six valid species recorded in birds Phalacrocoracidae, namely Baruscapillaria appendiculata Freitas, 1933, B. spiculata Freitas, 1933, B. carbonis (Dubinin & Dubinina, 1940), B. jaenschi (Johnston & Mawson, 1945), B. phalacrocoraxi (Borgarenko, 1975) and B. rudolphii Moravec, Scholz and Našincová, 1994. Helminthological tests carried out on cormorants of the species Phalacrocorax brasilianus (Gmelin), a migratory bird that occurs in the northeast of the State of Pará, Brazil, demonstrate B. appendiculata parasitizing the cloaca of these birds, through light microscopy, scanning electron microscopy and molecular biology. These studies allowed a redescription of males and females of this nematode in these hosts and in this geographical area through integrative taxonomy. The occurrence of lesions in the cloaca caused by this nematode parasite was registered using histological analysis. This is a new geographic report for this nematode. Resumo O gênero Baruscapillaria Moravec, 1982 possui seis espécies válidas registradas em aves Phalacrocoracidae, sendo Baruscapillaria appendiculata Freitas, 1933, B. spiculata Freitas, 1933, B. carbonis (Dubinin & Dubinina, 1940), B. jaenschi (Johnston & Mawson, 1945), B. phalacrocoraxi (Borgarenko, 1975) e B. rudolphii Moravec, Scholz & Našincová, 1994. Exames helmintológicos realizados em mergulhões da espécie Phalacrocorax brasilianus (Gmelin), aves migratórias que ocorrem no nordeste do Estado do Pará, Brasil, demonstram B. appendiculata parasitando a cloaca dessas aves, através de microscopia de luz, microscopia eletrônica de varredura e biologia molecular. Estes estudos permitiram uma redescrição de machos e fêmeas deste nematódeo, neste hospedeiro e nesta área geográfica, através da taxonomia integrativa. Foi registrada a ocorrência de lesões na cloaca causadas pelo parasitismo desse nematódeo, por meio de análise histológica, sendo um novo registro geográfico elw.

Two species of intestinal Capillariidae were hitherto known from the Neotropic cormorant Phalacrocorax brasilianus, Baruscapillaria spiculata (Freitas, 1933), and Baruscapillaria appendiculata (Freitas, 1933). The original descriptions are very short and brief, and further reports of both species are scarce and/or confusing. This paper provides a morphological redescription and molecular characterization, based on the partial 18S rDNA gene, of B. spiculata specimens parasitizing the Neotropic cormorant in two continental lagoons from Buenos Aires province, Argentina. Both morphological and morphometrical differences between B. spiculata and B. appendiculata are highlighted on the examination of available type material. Additionally, two previous reports of B. appendiculata from Mexico and Brazil are discussed. A phylogenetic analysis conducted on specimens of B. spiculata and 46 other capillariid isolates available from the GenBank demonstrated a sister-taxon relationship between our specimens and the type species of Baruscapillaria. But, at the same time, significant genetic distances between both taxa showed an interesting variability of the genus Baruscapillaria. The probable division of this genus into multiple genera could probably be confirmed through integrative studies including more species., Centro de Estudios Parasitológicos y de Vectores

Capillariidae is a group of nematode parasites of vertebrates with a complex taxonomy. The structure of the eggshell, which was indicated as the most important characteristic for identification of genus or species through eggs, is very diverse among genera. The visualization and characterization of eggshell by light microscopy (LM) are a challenging task since different planes of the egg surface are needed. Nevertheless, categories of eggshell ornamentation were proposed by LM: smooth, punctuated, reticulated type I, and reticulated type II. The present study aimed to characterize the eggshell structure of Capillariidae species, parasites of mammals and avians, deposited in a helminthological collection using scanning electron microscopy (SEM). Institutional Biological Collections are taxonomic repositories of specimens described and strictly identified at the species level by systematics specialists. SEM eggshell images were obtained from 12 species belonging to 5 genera (Aonchotheca, Baruscapillaria, Capillaria, Echinocoleus, Eucoleus) and compared to their respective LM images. Eggshell patterns observed using SEM were associated categories of eggshell ornamentation previously proposed by LM images. The SEM data indicate that eggshell categories are not in agreement with capillariid genera or sites of infection. However, the study provides previously unknown SEM eggshell information from curated species, which contributes with a specific and supplementary taxonomic feature at the species level of Capillariidae.

Nematodes of Capillariidae Neveu-Lemaire family, 1936 belong to a large and widespread group of par-asitic helminthes, which can be localized in almost all host organs. Different species parasitize in monkeys, wild and domestic carnivores, domestic ruminants, rodents, marsupials, fish, amphibians, as well as humans. Some of them are highly pathogenic and have not only epizootological but also epidemiological significance. The results of morphological studies play an important role in practical taxonomy for the construction of the natural system of this group of nematodes, as well as for understanding the evolution and phylogeny of Capillariidae. Due to such analysis, a generalized picture of the structure and anatomical organization of capillariides is created. The research was conducted at the laboratory of the Department of Parasitology and Veterinary Sanitary Expert Examination of Poltava State Agrarian Academy. The aim of the study was to establish differential species morphological and metric features of capillariides isolated from poultry. Ac-cording to the results of morphological studies of Capillaria anatis (Schrank, 1790) Travassos, 1915 and Baruscapillaria obsignata (Madsen, 1945), Moravec, 1982, mature males and females, their significant simi-larity was noted. These species have the same general body structure: in females the structure of the vulva, vagina, in males the structure of the tail end. At the same time, the differential morphological feature of C. anatis is the presence of spines on the spicular vagina. Significant differences in morphometric parame-ters of male and female capillariides of B. obsignata and C. anatis species were determined, which will ena-ble to increase the effectiveness of their identification. Morphometric parameters of B. obsignata males were higher than those of C. anatis in five indicators, which characterized the body and spicules length, the pseu-dobursa width and length. At the same time, the spicule of C. anatis is wider throughout its length than that of B. obsignata. In B. obsignata and C. anatis females, seven metric indicators have a significant difference in values, of which according to four indicators (body width in the vulva region; length, width and thickness of the egg membrane) females of C. anatis had higher parameters than those of B. obsignata. Differential features include the presence of cuticular elevations in the vulva of B. obsignata.

The purpose of the research devoted to the study of the possible factors of transmission of larval nematodosis pathogens, namely to clarify the possibility of nematodes eggs transfer from the soil to people’s homes on the dogs' paws and on people's shoes. Materials and methods . Three types of samples were examined for the presence of nematode eggs: the washings from the dog paws, from the shoes of dog owners, and the shoes of individuals that do not have pet dogs. To detect helminth eggs, the original protocol of the flotation-sedimentation method was used. A total of 150 volumetric samples were investigated. Results and discussion . In 17.3% of the samples from the paws of dogs and in 10.7% of the samples from the shoes of their owners, the eggs of parasitic nematodes were found. Toxocara eggs were found in 8.5% of samples, among them T. canis in 3.4%, T. cati in 5.1%; the eggs of Ancylostoma sp. in 2.5%, Trichuris cf. vulpis in 1.7%, Capillariidae gen. sp. in 2.5% of samples. In samples from the shoes of people who do not have dogs, nematode eggs were not found. All the eggs morphologically seemed to be alive. One third of the Toxocara eggs contained an embryo at the cleavage stage, the eggs of Trichuris and Capillariidae were at the zygote stage. Hookworm eggs contained larvae. The number of eggs found in the samples from the paws of dogs was almost double that on the shoes of their owners. Our study demonstrates that invasive parasitic agents can be carried from soil to human homes on shoe soles and dog paws. This fact needs to be accounted for when assessing the risk of worm infection in humans and dogs.

Examination of 32 spiral valves from neonate specimens of hammerhead shark Sphyrna spp. (Carcharhiniformes: Sphyrnidae) captured between June and August 2018 off the Atlantic coast of South Carolina, USA, revealed the presence of the capillariid nematode Piscicapillaria bursata (Capillariidae) in the Carolina hammerhead S. gilberti, the scalloped hammerhead S. lewini, and their hybrids. This is the second find of this parasite originally described from hammerhead sharks off Australia, its first record from the western Atlantic Ocean, and its first record in a new host species and in hybrids.

Отримано нові дані щодо фауни нематод роду Baruscapillaria, що паразитують у домашніх гусей на території України, Полтавська область. Встановлено, що видовий склад капілярій представлений двома видами – B. anseris (Madsen, 1945), Moravec, 1982 та B. obsignata (Madsen, 1945), Moravec, 1982. Вперше в Україні доведено паразитування неспецифічного для гусей виду капілярій B. obsignata. Встановлено, що капіляріоз гусей частіше перебігає у складі мікстінвазій травного каналу птиці, екстенсивність інвазії становить 41,97 %. За результатами гельмінтологічного розтину та ідентифікації виділених збудників виявлено 40 різновидів мікстінвазій, де співчленами нематод роду Baruscapillaria є цестоди двох видів: Drepanidotaenia lanceolata Bloch, 1782 і Tschertkovilepis setigera Froehlich, 1789 та нематоди чотирьох видів: Аmidostomum anseris Zeder, 1800, Trichostrongylus tenuis Mehlis, 1846, Heterakis gallinarum Schrank, 1788, Heterakis dispar Schrank, 1790. Найчастіше реєстрували капіляріоз у складі дво- (ЕІ – 17,75 %) та трикомпонентних (ЕІ – 11,75 %) мікстінвазій, а основними співчленами капілярій роду Baruscapillaria є нематоди А. anseris (ЕІ – 22,78 %) та H. dispar (ЕІ – 14,15 %). Получены новые данные о фауне нематод рода Baruscapillaria, паразитирующих в домашних гусей на территории Украины, Полтавская область. Установлено, что видовой состав капиллярий представлен двумя видами - B. anseris (Madsen, 1945, Moravec, 1982) и B. obsignata (Madsen, 1945, Moravec, 1982). Впервые в Украине доказано паразитирование неспецифического для гусей вида капиллярий B. obsignata. Установлено, что капилляриоз гусей чаще протекает в составе коинвазий пищеварительного тракта птицы, экстенсивность инвазии составляет 41,97%. По результатам гельминтологического вскрытия и идентификации выделенных возбудителей обнаружено 40 разновидностей коинвазий, где сочленами нематод рода Baruscapillaria являются цестоды двух видов: Drepanidotaenia lanceolata (Bloch, 1782) и Tschertkovilepis setigera (Froehlich, 1789) и нематоды четырех видов: Аmidostomum anseris (Zeder, 1800), Trichostrongylus tenuis (Mehlis, 1846), Heterakis gallinarum (Schrank, 1788), Heterakis dispar (Schrank, 1790). Чаще всего регистрировали капилляриоз в составе двух (ЭИ - 17,75%) и трехкомпонентных (ЭИ - 11,75%) коинвазий, а основными сочленами капиллярий рода Baruscapillaria есть нематоды А. anseris (ЭИ - 22,78%) и H. dispar (ЭИ - 14,15%).

International audience; Based on light and scanning electron microscopical studies, a new nematode parasite, Paracapillaria (Paracapillaria) gastrica n. sp. (Capillariidae), is described from the stomach of the marine fish (variegated lizardfish) Synodus variegatus (Lacépède) (Aulopiformes: Synodontidae) from off New Caledonia. This species is mainly characterised by the length of the spicule (267 µm), the proximal spicule end expanded to form a conspicuous folded, lobular rim, the presence of a well-developed caudal bursa supported by two lateral projections (rays) not adhering to the posterior border of body and by the size of eggs (54-60 9 24-27 µm) with non-protruding polar plugs. Paracapillaria gastrica n. sp. is the first known capillariid species parasitic in a host belonging to the fish order Aulopiformes and the first species of this genus reported from fishes in New Caledonian waters and the South Pacific Ocean.

The endoparasitic fauna of Acestrorhynchus lacustris from eight marginal lagoons of the upper and middle São Francisco river basin, Brazil, is recorded here for the first time. For this, a total of 106 specimens of A. lacustris were collected. Eighteen helminth species were found. The taxa recorded were phylum Platyhelminthes: one metacercaria of Clinostomum sp. (Trematoda: Clinostomidae) and plerocercoid larvae of unidentified species (Eucestoda: Proteocephalidae gen. sp.); phylum Acanthocephala: juvenile of Quadrigyrus sp.; and phylum Nematoda: larvae of Brevimulticaecum sp., Contracaecum sp. Type1, Contracaecum sp. Type2, Hysterothylacium sp., Gnathostoma sp., Spiroxys sp., juvenile and adult specimens of Freitascapillaria sp., Paracapillaria piscicola, Capillariidae gen. sp., Procamallanus (Spirocamallanus) hilarii, Procamallanus (S.) inopinatus, Procamallanus (S.) saofranciscencis, Travassosnema travassosi paranaensis, Cystidicoloides fischeri and Spinitectus rodolphiheringi. Proteocephalidae gen. sp., Contracaecum sp. Type1 and Travassosnema t. paranaensis were present in all eight lagoons with high parasitic indexes. Proteocephalidae gen. sp., Brevimulticaecum sp., Gnathostoma sp., Freitascapillaria sp., P. piscicola, Capillariidae gen. sp., Procamallanus (S.) hilarii, C. fischeri and S. rodolphiheringi are new records for A. lacustris. The known geographical distribution of Gnathostoma sp., Freitascapillaria sp., P. piscicola, Capillariidae gen. sp., Procamallanus (S.) hilarii and Travassosnema t. paranaensis has now been extended to the São Francisco river basin.

More than 30 species of exotic ungulates are currently kept in the Askania-Nova Biosphere Reserve (Kherson Region, Ukraine). During the years 1978–2014, 146 ungulates of 24 species (16 species of Bovidae, 4 — Cervidae, 4 — Camelidae) were examined by partial helminthological dissection; more than 402,700 specimens of helminths were collected and identified. The purpose of the present study was to summarize these data and analyze the species diversity in exotic ungulates. Totally, 38 species of helminths: 3 species of Trematoda, 6 — Cestoda, 29 — Nematoda were found. Ungulates from the family Bovidae were the most infected; they harbored 36 species of helminths, 1–18 species per host. In Camelidae, 15 species were found; 3–10 species per host. Cervidae harbored 9 species; 1–6 species per host. The highest species diversity was detected in the ungulates introduced from regions with climatic conditions similar to those in southern Ukraine: saiga antelope (19 species), European mouflon (18), Barbary sheep (18), and markhor (17). Ten species typical for domestic ruminants (Haemonchus contortus, Nematodirus sp., Aonchotheca bovis, Moniezia expansa, Oesophagostomum venulosum, Ostertagia circumcincta, Trichostrongylus axei, T. colubriformis, T. probolurus and Trichuris ovis) dominated in the parasite communities. Our results indicated reduction in the species diversity and alteration of the parasite community structures in these exotic ungulates kept in the Askania-Nova Reserve compared to their natural habitats.

У дослідженні представлені видоспецифічні морфологічні ознаки та метричні параметри зрілих чоловічих та жіночих нематод Сapillaria anatis (Nematoda, Capillariidae). Капілярії були отримані при дослідженні цек 205 домашніх качок (Anas platyrhynchos dom.), Вирощених на птахофабриках Полтавської, Сумської та Київської областей України. Відзначений статевий диморфізм був значущим за семи морфометричними параметрами, причому виміри жінок були більшими на 12,40–29,69%, ніж показники чоловіків. На додаток до видоспецифічних ознак, у чоловіків та жінок були запропоновані інші діагностичні ознаки С. anatis. У чоловіків такими таксономічно важливими ознаками є морфологічні особливості псевдобурси, спікули та орнаментації оболонки спікули. Для ідентифікації самок слід враховувати морфологію вульви та яєць у матці. Запропоновано одинадцять метричних параметрів для кращої диференціальної діагностики С. anatis. В работе представлены видоспецифические морфологические признаки и метрические параметры половозрелых нематод самцов и самок Сapillaria anatis (Nematoda, Capillariidae). Капилляриды получены при исследовании слепых кишок 205 домашних уток (Anas platyrhynchos dom.), Выращенных на птицефабриках Полтавской, Сумской и Киевской областей Украины. Отмеченный половой диморфизм был значимым по семи морфометрическим параметрам: самки были на 12,40–29,69% больше, чем самцы. Помимо видоспецифичных признаков, были предложены другие диагностические признаки у самцов и самок С. anatis. У самцов такими таксономически важными признаками являются морфологические особенности псевдобурсы, спикулы и орнамент спикулярного влагалища. При идентификации самок следует учитывать морфологию области вульвы и яиц в матке. Предложено одиннадцать метрических параметров для лучшей дифференциальной диагностики С. anatis.

Objectives Rodents play an important role to spread zoonotic diseases through society. The current study was carried out to collect informative data on the intestinal helminthic infections of wild rodents in Taleqan County, Alborz Province, the center of Iran, emphasizing their zoonotic aspects. Results Sixty-two killed rodents by local farmers belonging to five species were collected, among which 24 were identified as Mus musculus, 15 as Meriones persicus, 12 as Meriones libycus, 10 as Apodemus witherbyi, and 1 as Dryomys nitedula. Of them, 30 (48.4%) were infected with at least one helminth species. Rodents were infected with Hymenolepis diminuta (42%), Syphacia obvelata (21%), Hymenolepis nana (17.7%), Heligmosomoides polygyrus (9.6%), Trichuris muris (8%), and as well as a capillariid nematode that was isolated for the first time from D. nitedula in Iran. The findings of the present study revealed a significant intestinal helminthic infection of rodents in Taleqan County. Improving hygiene practices, and making a preventive attitude can be helpful to reduce the hazards of rodent-borne diseases in the area where humans, livestock, and synanthropic rodents are living close to each other.

During a helminthological survey on bats from Minas Gerais state, Brazil, we found 3.13% of bats parasitized with capillarids. Aonchotheca pulchra (Freitas, 1934), Tenoranema rivarolai (Lent et al., 1946), and some specimens of capillarids non-identified were registered. This is the first report of A. pulchra in Minas Gerais state and the second report of T. rivarolai in South America.

Eucoleus sp. Host: Larus dominicanus. SI: not reported. Lo: Chubut Province. Reference: Díaz et al. (2011a). Comment: immature adult specimens., Published as part of Drago, Fabiana B., Núñez, Verónica & Díaz, Mariano Dueñas, 2020, Checklist of the nematode parasites of wild birds of Argentina, pp. 43-61 in Revue suisse de Zoologie 127 (1) on page 45, DOI: 10.35929/RSZ.0005, http://zenodo.org/record/5743511, {"references":["Diaz J. I., Cremonte F., Navone G. 2011 a. Helminths of the kelp gull, Larus dominicanus, from the northern Patagonian coast. Parasitology Research 109: 1555 - 1562."]}

Ornithocapillaria ovopunctata (Linstow, 1873) Host: Sturnus vulgaris. SI: intestine. Lo: Bernal (-34.6956, -58.2667), Buenos Aires Province. Material deposited: MLP–He 6736. Reference: Valente et al. (2014)., Published as part of Drago, Fabiana B., Núñez, Verónica & Díaz, Mariano Dueñas, 2020, Checklist of the nematode parasites of wild birds of Argentina, pp. 43-61 in Revue suisse de Zoologie 127 (1) on page 45, DOI: 10.35929/RSZ.0005, http://zenodo.org/record/5743511, {"references":["Linstow O. 1873. Einige neue Nematoden nebst Bemerkungen uber bekannte Arten. Archiv fur Naturgeschichte 39: 293 - 306.","Valente R., Ibanez L. M., Lorenti E., Fiorini V. D., Montalti D., Diaz J. I. 2014. Helminth parasites of the European starling (Sturnus vulgaris) (Aves, Sturnidae), an invasive bird in Argentina. Parasitology Research 113: 2719 - 2724."]}

Pterothominx exilis (Dujardin, 1845) Host: Sturnus vulgaris. SI: intestine. Lo: Bernal (-34.6956, -58.2667), Buenos Aires Province. Material deposited: MLP–He 6735. Reference: Valente et al. (2014)., Published as part of Drago, Fabiana B., Núñez, Verónica & Díaz, Mariano Dueñas, 2020, Checklist of the nematode parasites of wild birds of Argentina, pp. 43-61 in Revue suisse de Zoologie 127 (1) on page 45, DOI: 10.35929/RSZ.0005, http://zenodo.org/record/5743511, {"references":["Dujardin F. 1845. Histoire naturelle des helminthes ou vers intestinaux. Librairie Encyclopedique de Roret, Paris, 654 pp.","Valente R., Ibanez L. M., Lorenti E., Fiorini V. D., Montalti D., Diaz J. I. 2014. Helminth parasites of the European starling (Sturnus vulgaris) (Aves, Sturnidae), an invasive bird in Argentina. Parasitology Research 113: 2719 - 2724."]}

Eucoleus penidoi (Freitas & Almeida, 1935) Host: Nothura maculosa. SI: muscular stomach. Lo: Maipú, Buenos Aires Province. Reference: Kaseta (1973). Comment: cited as Capillaria penidoi Freitas & Almeida, 1935. The genus Eucoleus was considered synonymous of Capillaria by Anderson et al. (2009), although both genera are so far considered valid (Moravec, 2001; Gibbons, 2010)., Published as part of Drago, Fabiana B., Núñez, Verónica & Díaz, Mariano Dueñas, 2020, Checklist of the nematode parasites of wild birds of Argentina, pp. 43-61 in Revue suisse de Zoologie 127 (1) on page 44, DOI: 10.35929/RSZ.0005, http://zenodo.org/record/5743511, {"references":["Freitas J. F. T., Almeida J. L. 1935. Sobre os nematoda Capillariinae parasitas de esophago e papo de aves. Memorias do Instituto Oswaldo Cruz 30: 123 - 56.","Kaseta S. M. 1973. Nematodes en Nothura maculosa (Temminck). Physis Seccion C 32 (84): 83 - 91.","Anderson R. C., Chabaud A. G., Willmont S. 2009. Keys to the Nematode Parasites of Vertebrates. Archival Volumen. CABi, Wallingford, 463 pp.","Moravec F. 2001. Trichinelloid Nematodes Parasitic in Coldblooded Vertebrates. Academia, Prague, 430 pp.","Gibbons L. M. 2010. Keys to the Nematode Parasite of Vertebrates. Supplementary Volume. CABI, Wallingford, 416 pp."]}

A commented checklist of the nematodes parasites of Argentinean wild birds is presented. This is the first compilation of parasitological papers about nematodes of Argentinean birds published between 1873 and November 2019. This review includes information about 64 nematode nominal species and 13 taxa identified at generic level, belonging to five orders, 16 superfamilies, 20 families, and 44 genera. Five species were considered incertae sedis, because they were described based only on larval stages, and one species was maintained as species inquirenda. The highest number of taxa of nematodes was recorded in the family Acuariidae with 20 nominal species and two taxa identified at generic level, followed by Anisakidae with eight nominal species and one taxon identified at generic level, and Tetrameridae with eight nominal species and two taxa identified at generic level. Of the 1042 species of birds reported in Argentina, only 65 (6.24%) were reported as hosts of adult nematodes. The families of birds with the highest number of reported taxa were Tinamidae (12 nematode taxa), Laridae (11), Anatidae (8) and Phalacrocoracidae (7). The present review provides data on hosts, geographical distribution, sites of infection, location of material deposited in Helminthological Collections, references, and taxonomic comments. A host/parasite list is also provided., Facultad de Ciencias Naturales y Museo

The article summarizes information on the nematodes parasitic in wild Carnivora of Ukraine. Totally, 50 species of nematodes are known to parasitise carnivorans in the country, 30 species were registered in the present study. Nematodes were found in 14 species of examined hosts from the families Canidae, Mustelidae and Felidae. Maximum diversity of nematodes of carnivorans was observed in Polissia (forest zone in the north of the country) and in Kherson Region in the south. Hosts from the family Canidae harboured 19 nematode species; studied species of the Mustelidae were infected with 15 nematode species, 6 of them were also found in Canidae. The wildcat (Felis silvestris Schreber) and the lynx (Lynx lynx Linnaeus) harboured only two species of nematodes, both are specific parasites of these hosts. The most comprehensive information concerns the nematode communities of the red fox (Vulpes vulpes Linnaeus) and the wolf (Canis lupus Linnaeus), with 19 and 9 nematode species found, correspondingly. From 1 to 6 nematode species were found in other species of carnivorans.

During previous surveys of helminths in rodents from Southeast Asia, an unnamed species of Aonchotheca was recovered from the stomach of several rodent species. In the present study, the description of the new species Aonchotheca yannickchavali n. sp. is provided based on both female and male specimens collected from two bandicoot rat species (Bandicota indica and Bandicota savilei) from Thailand (Buriram and Nan provinces). This nematode can be separated from other known Aonchotheca found in rodents by its microhabitat in the host and by the size of the spicules in males and the vulvar appendage in females.

Eucoleus boehmi (Nematoda: Capillariidae) occurs in the nasal conchae and paranasal sinuses of wild and domestic canids. We surveyed the red fox ( Vulpes vulpes ) on Prince Edward Island, Canada, for E. boehmi infection and characterized the associated histopathology. Nasal capillarid infections were detected based on histologic examination of three coronal sections of the nasal cavity and by centrifugal flotation examination (CFE) of rectal feces. Capillarids were detected in histologic sections in 28 of 36 (78%) foxes; detection occurred most frequently in the caudal section (28 foxes) and least in the rostral section (10 foxes). Adult worm morphology was typical for capillarids (stichosome esophagus, bacillary bands, bipolar plugged eggs); E. boehmi eggs were specifically identified based on the characteristic pitted shell wall surface. Adult worms were detected in histologic sections in all 28 and E. boehmi eggs in 21 of the positive foxes. No eggs of Eucoleus aerophilus were observed in any of the sections. Affected foxes had an eosinophilic and lymphoplasmacytic rhinitis with goblet cell hyperplasia. Eggs of E. aerophilus were detected on CFE in 20 of 36 (56%) foxes; 19 of the histologically positive foxes were coinfected with E. aerophilus. Eggs of E. boehmi were detected on CFE in 26 of 36 (72%) foxes and were consistent in size and morphology with those described from wild canids, but they differed from those reported from cases of infection in dogs. Prevalence based on identification of eggs on histologic section or CFE indicated 27 of 36 (75%) red foxes examined were infected with E. boehmi.

Thirty-eight Mallards were collected on the territory of Ukrainian Polissia to study the fauna of their gastro-intestinal helminths. Materials were collected in 1998-2000, 2014 and 2016 on the territory of Volyn and Chernihiv Regions. In total, 33 species of helminths were found. Th e prevalence of cestode infection was 78.9 %. We found 18 cestode species: Aploparaksis furcigera, Cloacotaenia megalops, Dicranotaenia coronula, Diorchis acuminatus, D. stefanskii, Fimbriaria fasciolaris, F. teresae, Microsomacanthus compressa, M. spiralibursata, M. paracompressa, M. paramicrosoma, M. parvula, M. hopkinsi, Platyscolex ciliata, Retinometra venusta, Sobolevicanthus aculeostyleticus, S. gracilis, S. stolli. Th e prevalence of trematode infection was 73.7 %. Th ere were 10 trematode species: Bilharziella polonica, Apatemon gracilis, Echinoparyphium aconitum, E. cinctum, Echinostoma revolutum group, Hypoderaeum conoideum, Notocotylus attenuatus, Parastrigea robusta, Prosthogonimus ovatus, P. cuneatus.Th e prevalence of nematode infection was 7.9 %. Th ere were four nematode species: Capillaria anatis, Capillariidae gen. sp., Eucoleus contorta, Tetrameres fi ssispina. Th e prevalence of an acanthocephalan Filicollis anatis was 18.4 %. Th e most common species of helminths were A. furcigera, B. polonica, A. gracilis, Echinostoma revolutum group, F. fasciolaris, H. conoideum. Th e helminth faunas of Mallards from the territory of Ukrainian Polissia and from the Black Sea Region of Ukraine were compared. Th e results of comparison demonstrated a high level of their qualitative similarity.

The third part of the catalogue of type material in the Helminthological Collection of the Oswaldo Cruz Institute/FIOCRUZ (CHIOC), comprising types deposited between 1979 and 2016, is presented to complement the first list of all types that was published in 1979. This part encompasses Acanthocephala, Nematoda and the other non-helminth phyla Cnidaria, Annelida, and Arthropoda. Platyhelminthes was covered in the first (Monogenoidea) and second (Rhabditophora Trematoda and Cestoda) parts of the catalogue published in September 2016 and March 2017, respectively. The present catalogue comprises type material for 116 species distributed across five phyla, nine classes, 50 families, and 80 genera. Specific names are listed systematically, followed by type host, infection site, type locality, and specimens with their collection numbers and references. Species classification and nomenclature are updated.

Eucoleus sp. (1) Site of infection. small intestine Collection number. MLP-He7327 Host species. Akodon montensis. CG145 Localities. PPU and RVSU Comments. The morphological characters observed in the specimens agree with the description of the genus Eucoleus, i.e. males without caudal alae, distal end with two small, posteriorly directed rounded lobes and connected by a reduced membrane, spinous spicular sheath, and females with non-elevated vulva. Nevertheless, the material collected is not well conserved to allow identification at species level. It is to be noted that the specimens were found in the small intestine, despite being the stomach the most common site of infection of the genus (Moravec, 1982). This is the first record of the genus Eucoleus in A. montensis and the second record for Argentina (Robles et al. 2008)., Published as part of Guillermo Panisse, María Del Rosario Robles, María Celina Digiani, Juliana Notarnicola, Carlos Galliari & Graciela Teresa Navone, 2017, Description of the helminth communities of sympatric rodents (Muroidea: Cricetidae) from the Atlantic Forest in northeastern Argentina, pp. 243-262 in Zootaxa 4337 (2) on pages 249-250, DOI: 10.11646/zootaxa.4337.2.4, http://zenodo.org/record/1018756, {"references":["Moravec, F. (1982) Proposal of a new systematic arrangement of nematodes of the family Capillaridae. Folia Parasitologica, 29, 119 - 132.","Robles, M. del R., Carballo, M. C. & Navone, G. T. (2008) A new species of Liniscus (Nematoda: Trichuridae) from Oxymycterus rufus and Akodon azarae (Cricetidae: Sigmodontinae) in Buenos Aires Province, Argentina. Journal of Parasitology, 94, 909 - 917. https: // doi. org / 10.1645 / ge- 1375.1"]}

Paracapillaria (Paracapillaria) parophrysi (Moravec, Margolis & McDonald, 1981) Moravec, 1982 Synonym: Capillaria parophrysi Moravec, Margolis & McDonald, 1981 Description (after Moravec 2001). With characteristics of the genus. Males: Body length 3.98–5.74, maximum width 0.051–0.069. Muscular oesophagus 0.147–0.255 long, stichosome 1.86–2.22, 30–35 stichocytes. Nerve ring 0.060–0.078 from anterior end. Spicule well sclerotized, smooth, 0.281–0.373 long (Fig. 22 B). Tail rounded, 0.009–0.014 long. Females: Gravid worms 6.58–10.42 long, maximum width 0.056–0.093. Muscular oesophagus 0.138–0.235 long, stichosome 1.96–3.07, 33–35 stichocytes. Nerve ring 0.058–0.081 from anterior end. Vulva at level of oesophago-intestinal junction. Uterus with eggs in one row near vulva (Fig. 22 C), distally in two rows. Mature eggs 0.064–0.071 x 0.025–0.030, polar plugs distinctly protruding (Fig. 22 D). Ovary posteriorly reaching anterior end of rectum. Rectum 0.081–0.113 long. Anus subterminal, tail 0.007–0.009 long. Site: intestine Hosts: Hippoglossus stenolepis (3, 4, 5); Parophrys vetulus (1, 2) Distribution: Pacific Records: 1. Margolis 1952; 2. Moravec et al. 1981; 3. Blaycock 1996; 4. Blaycock et al. 1998a; 5. Blaycock et al. 1998b, Published as part of Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, pp. 1-274 in Zootaxa 4185 (1) on pages 28-29, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530, {"references":["Moravec, F., Margolis, L. & McDonald, T. E. (1981) Two new species of nematodes of the genus Capillaria (C. freemani sp. nov. and C. parophrysi sp. nov.) from marine fishes of the Pacific coast of Canada. Canadian Journal of Zoology, 59, 81 - 87. http: // dx. doi. org / 10.1139 / z 81 - 013","Margolis, L. & Moravec, F. (1982) Ramellogammarus vancouverensis Bousfield (Amphipoda) as an intermediate host for salmonid parasites in British Columbia. Canadian Journal of Zoology, 60, 1100 - 1104. http: // dx. doi. org / 10.1139 / z 82 - 152","Moravec, F. (2001) Trichinelloid Nematodes Parasitic in Cold-Blooded Vertebrates. Academia, Praha, 429 pp. http: // dx. doi. org / 10.14411 / fp. 2002.007","Blaycock, R. B. (1996) The parasites of Pacific halibut, Hippoglossus stenolepis, in the northeastern Pacific: ecological patterns in time and space. Ph. D. Dissertation. Department of Biological Sciences, University of Alberta, Edmonton, Alberta, 156 pp.","Blaycock, R. B., Holmes, J. C. & Margolis, L. (1998 a) The parasites of Pacific halibut (Hippoglossus stenolepis) in the eastern North Pacific: host-level influences. Canadian Journal of Zoology, 76, 536 - 547. http: // dx. doi. org / 10.1139 / z 97 - 214","Blaycock, R. B., Margolis, L. & Holmes, J. C. (1998 b) Zoogeography of the parasites of Pacific halibut (Hippoglossus stenolepis) in the northeast Pacific. Canadian Journal of Zoology, 76, 2262 - 2273. http: // dx. doi. org / 10.1139 / z 98 - 172"]}

Key to the species of Pseudocapillaria from Canadian fresh-water fishes 1 Male tail with short dorsal caudal bursa connecting subventral lobes..................... P. (Ichthyocapillaria) salvelini - Male tail lacking caudal bursa connecting subventral lobes............................ P. (Pseudocapillaria) tomentosa

Capillaria (Capillaroides) catenata Van Cleave & Mueller, 1932 Synonym: Capillaria (Thominx) catenata Van Cleave & Mueller, 1932 Description (after Moravec 2001). With characteristics of the genus. Males: 7.70–9.04 long, 0.068 maximum width. Entire oesophagus 5.90–6.48 long, 40 stichocytes. Spicule apparently weakly sclerotized, 0.399–0.465 long, covered with transverse grooves except at extremities (Fig. 20 A). Posterior end rounded, somewhat inflated both sides, with two large ventro-lateral papillae. Cloacal opening subterminal, tail 0.018 long. Females: Gravid worms 10.98–12.27 long, maximum width 0.068–0.095. Muscular oesophagus 0.210–0.300 long, stichosome 5.60–6.29 long, 40–44 stichocytes. Nerve ring 0.063–0.096 from anterior end. Vulva 0.009–0.090 behind oesophago-intestinal junction, its lips not elevated. Vulvar appendage absent (Fig. 20 B). Relatively few eggs (ca 10) in uterus, in one row. Eggs 0.057–0.060 x 0.030–0.039 (possibly expanded by coverslip pressure). Site: intestine Hosts: Ambloplites rupestris (2); Catostomus commersoni (1); Oncorhynchus nerka (3, 4); Osmerus mordax (3, 4) Distribution: Ontario, Quebec Records: 1. Fantham & Porter 1948 (QC); 2. Dechtiar 1972a (ON); 3. Collins & Dechtiar 1974 (ON); 4. Dechtiar et al. 1988 (ON), Published as part of Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, pp. 1-274 in Zootaxa 4185 (1) on page 26, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530, {"references":["Moravec, F. (2001) Trichinelloid Nematodes Parasitic in Cold-Blooded Vertebrates. Academia, Praha, 429 pp. http: // dx. doi. org / 10.14411 / fp. 2002.007","Fantham, H. B. & Porter, A. (1948) The parasitic fauna of vertebrates in certain Canadian fresh waters, with some remarks on their ecology, structure and importance. Proceedings of the Zoological Society of London, Series B, 117, 609 - 649. http: // dx. doi. org / 10.1111 / j. 1096 - 3642.1948. tb 00543. x","Dechtiar, A. O. (1972 a) Parasites of fish from Lake of the Woods, Ontario. Journal of the Fisheries Research Board of Canada, 29, 275 - 283. http: // dx. doi. org / 10.1139 / f 72 - 046","Collins, J. J. & Dechtiar, A. O. (1974) Parasite fauna of kokanee salmon (Oncorhynchus nerka) introduced into Lake Huron. Journal of the Fisheries Research Board of Canada, 31, 1818 - 1821. http: // dx. doi. org / 10.1139 / f 74 - 234"]}

Piscicapillaria Moravec 1982 Generic diagnosis (after Moravec 2001). Capillariidae. Stichosome comprises one row of stichocytes. Males lack lateral caudal alae. Spicular sheath spiny. Small membranous bursa supported by pair of dorso-lateral digital projections (rays), curved along margin of bursa to dorsal side, and an unpaired dorsal caudal projection. One pair large caudal papillae present. Vulvar appendage absent. One species, Piscicapillaria (Piscicapillaria) freemani, known from Canadian Pacific fishes., Published as part of Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, pp. 1-274 in Zootaxa 4185 (1) on page 28, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530, {"references":["Margolis, L. & Moravec, F. (1982) Ramellogammarus vancouverensis Bousfield (Amphipoda) as an intermediate host for salmonid parasites in British Columbia. Canadian Journal of Zoology, 60, 1100 - 1104. http: // dx. doi. org / 10.1139 / z 82 - 152","Moravec, F. (2001) Trichinelloid Nematodes Parasitic in Cold-Blooded Vertebrates. Academia, Praha, 429 pp. http: // dx. doi. org / 10.14411 / fp. 2002.007"]}

Family CAPILLARIIDAE Railliet, 1915 General characteristics (after Moravec 2001). Thread-like nematodes. Cuticle with longitudinal bacillary bands, usually two lateral, one dorsal and one ventral. One sclerotized spicule with smooth or spiny spicular sheath, able to invaginate or evaginate. Posterior end of male with or without small membranous bursa. Vulva near posterior end of oesophagus, sometimes with elevated lips. Eggs usually barrel-shaped with polar plugs, and a smooth or sculptured surface., Published as part of Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, pp. 1-274 in Zootaxa 4185 (1) on page 23, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530, {"references":["Moravec, F. (2001) Trichinelloid Nematodes Parasitic in Cold-Blooded Vertebrates. Academia, Praha, 429 pp. http: // dx. doi. org / 10.14411 / fp. 2002.007"]}

Capillaria (Procapillaria) gracilis (Bellingham, 1840) Travassos, 1915 Synonym: Capillaria kabatai Inglis & Coles, 1963 Description (after Moravec 2001). With characteristics of the genus. Males: Body length 7.14–8.42 long, maximum width 0.041–0.054. Muscular oesophagus 0.180–0.396 long, stichosome 4.04–6.85, 47 stichocytes. Nerve ring 0.111 from anterior end. Spicule slender, 0.975–1.375 long, posterior half with rough transverse grooves (Fig. 19 A). Cloaca opening subterminal. Tail rounded, 0.009–0.018 long, with ventro-lateral lobe, 0.018–0.027 long, on either side, each probably with a papilla (Fig. 19 B). Pair of large sessile adcloacal papillae at lobe bases. Females: Gravid worms 13.20–35.16 long, maximum width 0.068–0.095. Muscular oesophagus 0.225–0.450 long, stichosome 5.04–8.73, 38–51 stichocytes. Nerve ring 0.081–0.114 from anterior end. Vulva with appendage 0.027–0.123 behind oesophago-intestinal junction (Fig. 19 C); rarely gravid females lack the appendage. Uterus with many eggs in one row near vulva. Mature eggs 0.072–0.090 x 0.027–0.036. Site: intestine Hosts: Anarhichas lupus (2); Hippoglossoides platessoides (2); Hippoglossus hippoglossus (2); Macrourus berglax (3); Merluccius albidus (4); Merluccius bilinearis (1); Myoxocephalus octodecemspinosus (5); Nezumia bairdii (3); Urophycis chuss (4); Urophycis tenuis (4) Distribution: Atlantic Records: 1. Gaevskaya & Umnova 1977; 2. Zubchenko 1980; 3. Zubchenko 1981a; 4. Scott 1987; 5. Moravec 1987, Published as part of Arai, Hisao P. & Smith, John W., 2016, Guide to the Parasites of Fishes of Canada Part V: Nematoda, pp. 1-274 in Zootaxa 4185 (1) on pages 25-26, DOI: 10.11646/zootaxa.4185.1.1, http://zenodo.org/record/165530, {"references":["Moravec, F. (2001) Trichinelloid Nematodes Parasitic in Cold-Blooded Vertebrates. Academia, Praha, 429 pp. http: // dx. doi. org / 10.14411 / fp. 2002.007","Gaevskaya, A. V. & Umnova, B. A. (1977) [On the parasite fauna of the principal commercial fishes of the northwest Atlantic.] Biologiya Morya (Vladivostok), 4, 40 - 48. [In Russian]","Zubchenko, A. V. (1980) Parasitic fauna of Anarhichadidae and Pleuronectidae families of fish in the northwest Atlantic. International Commission for Northwest Atlantic Fisheries, Selected Papers, No. 6, 41 - 46.","Zubchenko, A. V. (1981 a) Parasitic fauna of some Macrouridae in the northwest Atlantic. Journal of Northwest Atlantic Fisheries Science, 2, 67 - 72. http: // dx. doi. org / 10.2960 / j. v 2. a 8","Scott, J. S. (1987) Helminth parasites of the alimentary tracts of hakes (Merluccius, Urophycis, Phycis: Teleostei) of the Scotian Shelf. Canadian Journal of Zoology, 6, 304 - 311. http: // dx. doi. org / 10.1139 / z 87 - 047"]}