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The egg parasitoid Telenomus remus (Hymenoptera: Scelionidae) has been investigated for classical and applied biological control of noctuid pests, especially Spodoptera (Lepidoptera: Noctuidae) species. Although T. remus was introduced into Brazil over three decades ago for classical biological control of S. frugiperda, this wasp has not been recorded as established in corn or soybean crops. We used an integrative approach to identify T. remus, combining a taxonomic key based on the male genitalia with DNA barcoding, using a cytochrome c oxidase subunit I mitochondrial gene fragment. This is the first report of natural parasitism of T. remus on S. frugiperda and S. cosmioides eggs at two locations in Brazil. We also confirmed that the T. remus lineage in Brazil derives from a strain in Venezuela (originally from Papua New Guinea and introduced into the Americas, Africa, and Asia). The occurrence of T. remus parasitizing S. frugiperda and S. cosmioides eggs in field conditions, not associated with inundative releases, suggests that the species has managed to establish itself in the field in Brazil. This opens possibilities for future biological control programs, since T. remus shows good potential for mass rearing and egg parasitism of important agricultural pests such as Spodoptera species.

Parasitoid wasps from the Aphelinidae family (Hymenoptera) are important control agents of Bemisia tabaci (Gennadius, 1889) cryptic species, both through reproduction and feeding processes. Identifying native parasitoid species within agricultural systems affected by Bemisia whitefly species is the first step to developing guidelines for the creation and release of biological control agents aiming at this highly damaging pest species complex. Taxonomic and phylogenetic analyses based on morphological and molecular characters, respectively, confirmed the occurrence of Encarsia formosa (Gahan, 1924) in greenhouse tomatoes from Santa Maria, Encarsia porteri (Mercet, 1928) in open-field soybean from Santa Maria, and Eretmocerus mundus Mercet, 1931 in greenhouse tomatoes from São José do Hortêncio, all within Rio Grande do Sul state (South Brazil). This is the first report of En. formosa, En. porteri and Er. mundus parasitising B. tabaci in South Brazil, and the first En. porteri partial mtCOI gene sequence being reported and characterised. The high temperature inside the tomato greenhouses can be a possible cause for the predominance of Er. mundus in São José do Hortêncio, and sex ratios in the surveyed populations point to female and male prevalence within Encarsia and Eretmocerus genera, respectively. The combined use of taxonomic and molecular characterisation highlights the importance of combining both morphological and molecular approaches in the assessment of previously unidentified whitefly parasitoids.

The Enemy Release Hypothesis (ERH) has been a factor influencing the establishment of some exotic species worldwide. We tested if the ERH could be influencing populations of the exotic predator Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) in Brazil. During two years, three local predatory coccinellid species and Harmonia axyridis were sampled in Brassica oleracea in six organic farms in the midwest of the country. Parasitoids were detected by rearing (emerged) and qPCR Melting Curve Analysis (unemerged). Host density-dependence and spillovers were used to evaluate coccinellid population effects of parasitism. Six parasitoid species were found, including two new records for Brazil. Although Harmonia axyridis harbored fewer parasitoid species, parasitism was not lower and parasitoid density-dependence was not weaker on it compared to the local species. Spillovers among hosts occurred both onto Harmonia axyridis and from it. The ERH was rejected for these parasitoids and, therefore, it did not contribute to the invasiveness of Harmonia axyridis in Brazil.

Temperature is one of the abiotic factors that strongly influences the biology and behavior of insects. In this study, we assessed the development of egg parasitoids Ooencyrtus submetallicus and Telenomus podisi parasitizing Euschistus heros eggs at different temperatures, and estimated the average number of generations for seven representative soybean-producing regions in Brazil. A comparative biology study was conducted, where the percentage of parasitism and emergence, life cycle duration (egg–adult), and longevity were found to be similar between O. submetallicus and T. podisi. The sex ratio and the number of individuals emerged from parasitized egg were higher in O. submetallicus in all regions. In the study of thermal requirements, temperatures of 16, 19, 22, 25, 28, 31, and 33 °C were tested. O. submetallicus and T. podisi developed at temperatures between 16 and 31 °C. The base temperature (Tb) for O. submetallicus and T. podisi was 9.3 and 6.7 °C, respectively, the thermal constant (K) was 336.9 and 272.7 degree-days, respectively. The estimated average number of annual generations of both parasitoids was higher than the host. O. submetallicus and T. podisi have the same ability to parasitize and develop in eggs of E. heros under the conditions studied. Both parasitoids exhibited satisfactory development and parasitism at temperatures between 19 and 31 °C. The development of both parasitoids was faster than their host, and the number of generations was higher for the seven studied localities.

The aim of this study was to assess the occurrence and identify the egg-parasitoid species of the cassava hornworm (Erinnyis spp.) in cassava plants (Manihot esculenta Crantz - Euphorbiaceae), facilitating their usage in the biological control as a management strategy in the Pará State. During February to December of 2016, cassava hornworm eggs were collected in the Cassava Germplasm Bank area of the Embrapa Amazônia Oriental, located at the city of Belém, State of Pará. In the laboratory, eggs were separated in viable and parasitized and were daily observed until the hatching of the caterpillars and emergence of the parasitoids. The caterpillars were reared until reaching the adult stage and the sex determined at the pupae stage. A total of 482 eggs were collected, with a higher occurrence at March, and 244 caterpillars were obtained with sex ratio of 0.52 with 191 specimens reaching adult stage. Among these adults, 95.81% were Erinnyis ello (Linnaeus) and 4.19% Erinnyis alope (Drury). A total of 1,087 parasitoids were obtained from 131 eggs and belong to four Hymenoptera families: Platygastridae (Telenomus dilophonotae Cameron), Eulophidae (Chrysonotomyia sp. aff. serjaniae),Trichogrammatidae (Trichogramma marandobai Brun, Moraes & Soares) and Encyrtidae (Ooencyrtus sp.). The Erinnyis spp. eggs were mostly parasitized by T. dilophonotae, which was classified along with T. marandobai as constant. The occurrence of these natural enemies highlights the potential for natural biological control against Erinnyis spp. Made available in DSpace on 2021-06-19T02:37:01Z (GMT). No. of bitstreams: 1 Anexo-2.pdf: 2758233 bytes, checksum: ea9c11654f1a7ea4b84e6861e809b0c5 (MD5) Previous issue date: 2020

RESUMO Este trabalho registra pela primeira vez a ocorrência de seis espécies de Aleyrodidae e respectivas plantas hospedeiras no Estado de Roraima. Dentre os registros constam Aleurocanthus woglumi Ashby, praga quarentenária presente no Brasil (A2) e alguns inimigos naturais. ABSTRACT This paper register new reports of six Aleyrodidae species and respective host plants from the state of Roraima, Brazil. Among the Aleyrodinae species, the reports concern Aleurocanthus woglumi Ashby, a quarantine pest present in Brazil (A2) and some natural enemies.

Psyllaephagus bliteus Riek, 1962 (Hymenoptera: Encyrtidae) é uma vespa de origem australiana que parasita ninfas de Glycaspis brimblecombei Moore, 1964 (Hemiptera: Psyllidae). No Brasil, a presença de ambos foi registrada pela primeira vez no Estado de São Paulo em 2003 e, posteriormente, sua ocorrência foi registrada nos estados do Paraná, Goiás, Minas Gerais, Santa Catarina, Rio Grande do Sul e Mato Grosso. No manejo dessa praga, P. bliteus é uma das formas mais promissoras de controle biológico clássico, uma vez que G. brimblecombei tem causando danos significativos na produção florestal. A ocorrência destes insetos na região nordeste de Mato Grosso do Sul foi constatada no Município de Chapadão do Sul, em povoamento de Eucalyptus camaldulensis, confirmando o potencial dispersivo e adaptativo de ambos.

Made available in DSpace on 2018-11-26T17:52:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-06-01 FAPEMA - Fundacao de Amparo a Pesquisa e ao Desenvolvimento Cientifico e Tecnologico do Maranhao Instituto Nacional de Ciencia e Tecnologia dos Hymenoptera Parasitoides da Regiao Sudeste Brasileira Fifteen species of parasitoids emerged from 6 species of scale insects, all are recorded for the first time in Maranhao State, Brazil. A total of 20 coccoid/parasitoid associations were found, 5 of which are new host records for the parasitoid species: Coccus hesperidum (L.) (Hemiptera: Coccidae) with Arrhenophagus chionaspidis (Aurivillius) (Hymenoptera: Encyrtidae); and Praelongorthezia praelonga (Douglas) (Hemiptera: Ortheziidae) with Aenasius sp. (Hymenoptera: Encyrtidae), Encyrtus aurantii (Geoffroy) (Hymenoptera: Encyrtidae), Aprostocetus sp. (Hymenoptera: Eulophidae) and Signiphora sp. (Hymenoptera: Signiphoridae). Univ Estadual Maranhao, Programa Posgrad Agroecol, Cidade Univ Paulo 6, Sao Luis, Maranhao, Brazil Ctr Avancado Pesquisa Protecao Plantas & Saude An, Campinas, SP, Brazil Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Fitossanidade, Jaboticabal, SP, Brazil Univ Estadual Sudoeste Bahia, Dept Fitotecnia & Zootecnia, Vitoria De Conquista, Bahia, Brazil Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Fitossanidade, Jaboticabal, SP, Brazil FAPEMA - Fundacao de Amparo a Pesquisa e ao Desenvolvimento Cientifico e Tecnologico do Maranhao: BIC-02536/12 Instituto Nacional de Ciencia e Tecnologia dos Hymenoptera Parasitoides da Regiao Sudeste Brasileira: CNPq 573802/2008-4

The study of the interaction between parasitoid and host, especially the age of these organisms, is an important step towards the implementation of biological control programs. Therefore, we investigated the performance of Ooencyrtus submetallicus (Hymenoptera: Encyrtidae) and Trissolcus sp. aff. urichi (Hymenoptera: Scelionidae) parasitizing eggs of Nezara viridula (Hemiptera: Pentatomidae), considering different ages of the parasitoids and the host. We performed four laboratory bioassays: two using females of O. submetallicus and Trissolcus sp. aff. urichi at 24, 48, 72, 96, 120, or 144 hours of age exposed to parasitism in N. viridula eggs (24 h) and two trials with N. viridula eggs at 24, 48, 72, 96, 120, or 144 hours exposed to the parasitism of O. submetallicus and Trissolcus sp. aff. urichi (24 h). We evaluated the percentage of parasitism and emergence, life cycle length, progeny, sex ratio, and the longevity of the parasitoids. The parasitism of O. submetallicus in N. viridula eggs was influenced by the age of the parasitoid, 120 hours being the minimum to obtain better parasitism. From this age on, there is interference in the longevity of the progeny. Trisolcus sp. aff. urichi, at all ages, parasitized N. viridula eggs relatively well, but with almost no emergence of the parasitized eggs. Females of O. submetallicus parasitized and developed in eggs of N. viridula of all ages. Females of Trissolcus sp. aff. urichi parasitized their host, but there was barely any emergence. These pieces of information regarding the breeding methodology contribute to the implementation of new protocols for the multiplication of these parasitoids in the laboratory, and later, their release in the field.

First records of parasitoids attacking the Asian citrus psyllid in Ecuador. The objective of the current study was to investigate the presence of natural enemies of Diaphorina citri (Hemiptera: Liviidae) (the Asian citrus psyllid) in Ecuador. Incidence of parasitoid Diaphorencyrtus aligarhensis (Hymenoptera: Encyrtidae) was assessed between November 2015 and March 2016, in Letamendi, Febres-Cordero and Tarqui, urban districts of Guayaquil. Highest incidence of parasitism occurred in those regions and seasons of the year with the highest temperatures commensurate with increase of citrus plant shoots. Similar to their host, these parasitoids appear to have established in Ecuador by accident, and were not the result of purposeful introduction. This fortuitous introduction is a potentially helpful tool in controlling the Asian citrus psyllid, and potentially Huanglongbing. Keywords: Diaphorencyrtus aligarhensis, Diaphorina citri, Endoparasitoid, Huanglongbing, Tamarixia radiata

Pseudococcidae species, also known as mealybugs, comprises a complex of pests in various cultivated and non-cultivated plant species, among which fruit plants are most affected by both direct and indirect damage. The incidence of these pest species has been constant in productive environments, causing significant losses due to sap suction, virus transmission, and damage to fruit quality. Thus, this study aimed to know and investigate the population dynamics of natural enemies of Pseudococcidae in different fruit plants cultivated in the semiarid region of Brazil. For this, mealybugs associated with roots, stems, leaves, and fruits of vine, pear, apple, persimmon, guava, and acerola trees were collected biweekly in 14 properties in the São Francisco Valley region, from July 2016 to June 2017. These mealybugs were properly separated for the removal of their predators and the emergence of parasitoids associated with them (Pseudococcidae). Coccophagus sp., Aenasius sp., Anagyrus kamali, Anagyrus sp. 1, Anagyrus sp. 2, Anagyrus sp. 3, Anagyrus sp. 4, Coccidoxenoides perminutus, Gyranusoidea indica, Leptomastix dactylopii, Prochiloneurus sp., Aprostocetus sp., and Signiphora sp. were identified as parasitoids and Diadiplosis multifila, Cryptolaemus montrouzieri, Tenuisvalvae notata, Cycloneda sanguinea, and Hippodamia convergens were identified as predators, in addition to unidentified species of Coccinellidae and Chrysopidae. Made available in DSpace on 2022-10-21T14:09:29Z (GMT). No. of bitstreams: 1 Biodiversity-of-Natural-Enemies-of-Pseudococcidae-in-the-Semiarid-Region-of-Brazil-2020.pdf: 210030 bytes, checksum: 1fbe49af51d5d23a9451c64e981f624a (MD5) Previous issue date: 2020

Fruit flies (Diptera: Tephritidae) are important pests that affect the fruit-growing worldwide. In the northeastern Brazil, where a semiarid climate predominates and the production of tropical fruits for export is concentrated, some fruit flies, including Anastrepha spp. and Ceratitis capitata (Wiedemann), are considered pests due to economic damage and quarantine restrictions. In several parts of the world, fruit fly population regulation is carried out with the support of hymenopteran parasitoids. In Brazil, some information exists about larval parasitoids of fruit flies, but little is known about pupal parasitoids of these tephritids, especially in Brazilian semiarid environments. Therefore, the main objective of this study was to know the pupal parasitoids associated with C. capitata in a semiarid environment in Brazil. The parasitoid survey was carried out in a semiarid region in the states of Rio do Norte and Ceará. To obtain the parasitoids, pupae (sentinels) of C. capitata from the laboratory, Applied Entomology Laboratory of Universidade Federal Rural do Semi-Árido, were exposed to natural parasitism in the field. Six parasitoid (Hymenoptera) species were obtained: Pachycrepoideus vindemmiae (Rondani), Spalangia simplex Perkins, Spalangia gemina Boucek, Spalangia leiopleura Gibson, and Spalangia impunctata Howard (Pteromalidae); Trichopria anastrephae Lima (Diapriidae). These are the first records of pupal parasitoids associated with the fruit fly C. capitata in Brazil.

Aspects of the natural history of the black widow spider Latrodectus thoracicus (Nicolet, 1849) are poorly known. The first observation of predation on L. thoracicus egg sacs is presented here, and we describe the predatory wasp (Philolema sp.) as a natural enemy for this species.

From those of the mealybug family, the citrus mealybug, Planococcus citriRisso, 1813 (Hemiptera: Pseudococcidae) is frequently held responsible for various diseases occurring in vineyards. This is a first time report in Brazil, on the occurrence of a parasitoid controlling P. citri. In our search for the natural enemies of P. citri, bunches of grapes with the vine were collected every week for one month, in those regions where table grapes were produced, like Petrolina, Pernambuco, Brazil. In these samples, among the natural pest infestations Coccidoxenoides perminutusGirault, 1915 (Hymenoptera: Encyrtidae) was the only natural enemy species reported. In this research, we attempted to study the potential of parasitism as well as the strategies that this natural agent uses in pest control.

The braconid parasitoids of fruit-infesting flies have been more intensively studied from the middle to late 1990s, when taxonomic research was restarted in Brazil. At the same time, efforts toward the biological control of fruit flies intensified, and an exotic species, Diachasmimorpha longicaudata, was introduced. In the decade 2010, another exotic species, Fopius arisanus, was introduced, and two new species of Doryctobracon were described. Currently, 12 species of braconids from the subfamilies Alysiinae (two species) and Opiinae (10 species) are associated with fruit flies of economic importance in Brazil, two of which are introduced species. More than half of the species belong to the genus Doryctobracon, with D. areolatus (Szépligeti) the most widely distributed species in Brazil. Fil: Fidelis Marinho, Claudia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones y Transferencia de Catamarca. Universidad Nacional de Catamarca. Centro de Investigaciones y Transferencia de Catamarca; Argentina Fil: Costa, Valmir A.. Universidade Estadual de Campinas; Brasil Fil: Zucchi, Roberto A.. Universidade do Sao Paulo. Escola Superior de Agricultura Luiz de Queiroz; Brasil

RESUMO As moscas-das-frutas (Diptera: Tephritidae), Anastrepha spp. e Ceratitis capitata(Wiedemann), são importantes pragas da fruticultura no Brasil. Para desenvolver um sistema sustentável de manejo integrado para este grupo de pragas, é fundamental conhecer os parasitoides (Hymenoptera) que podem regular as populações destes tefritídeos. Portanto, o objetivo deste estudo foi relatar a diversidade, a distribuição geográfica e as relações tritróficas dos himenópteros parasitoides de moscas-das-frutas, na região do Baixo Jaguaribe, no semiárido do Estado do Ceará, Brasil. Foram realizadas coletas de frutos em sete municípios da região, no período de maio de 2010 amaio de 2013. Os frutos foram levados para o laboratório, onde foram contados, pesados, colocados em bandejas plásticas com vermiculita e fechadas com tecido voile. Após sete dias, a vermiculita foi peneirada para a obtenção dos pupários das moscas-das-frutas que, em seguida, foram contados e acondicionados em placas de Petri, onde permaneceram até a emergência dos adultos (moscas e/ou parasitoides). Quatro espécies de parasitoides foram encontradas: Doryctobracon areolatus(Szépligeti), Opius bellus Gahan, Utetes anastrephae(Viereck) (Braconidae) e Tetrastichus giffardianusSilvestri (Eulophidae),sendo o mais frequente e com maior distribuição geográfica na região, D. areolatus. Doryctobracon areolatusfoi mais comum em associação com espécies de Anastrepha - A. sororcula Zucchi, A. obliqua (Mcquart) e A. zenildae Zucchi, em frutos nativos e com C. capitata em frutos exóticos. Tetrastichus giffardianus foi obtido apenas em associação com C. capitata, em frutos nativos e exóticos. Estas informações podem servir de base para inserção de parasitoides em futuros programas de manejo integrado de moscas-das-frutas, nas condições do Semiárido brasileiro. ABSTRACT Fruit flies (Diptera: Tephritidae), Anastrepha spp. and Ceratitis capitata (Wiedemann), are important pests of Brazilian fruit-growing. In order to develop a system of pests integrated management in any region, it is essential to know the parasitoids (hymenoptera) which can regulate the populations of these tefritids. Therefore the objectives of this study were to know the diversity, geographic distribution and tritrophic relations of the hymenoptera parasitoids of fruit flies, in Baixo Jaguaribe region, located in Ceará semiarid, Brazil. Thus, fruits were collected in seven counties of the region, from May 2010 to May 2013. The fruits were taken to the laboratory, where they were counted, weighted, put in plastic trays with vermiculite and closed with voile. After seven or ten days, the vermiculite was sieved to obtain the puparium of the fruit flies. The puparium were counted and put in Petri dish, where they stayed until the emergence of the adults (flies and/or parasitoids). Four species of parasitoids were obtained: Doryctobracon areolatus (Szépligeti), Opius bellus Gahan, Utetes anastrephae (Viereck) (Braconidae) and (Eulophidae), Tetrastichus giffardianusSilvestri and the most frequently and with better geographical distribution in the region was D. areolatus. was Doryctobracon areolatus more common in association with species of Anastrepha - A. sororcula Zucchi, A. obliqua (Mcquart) and A. zenildaeZucchi, in native fruits and with C. capitata in exotic fruits. Tetrastichus giffardianus was obtained only in association with C. capitata in native and exotic fruits. This information can be used for inclusion of parasitoids in future integrated management programs of the fruit flies under the conditions of the Brazilian semiarid region.

The use of the parasitoid Neodusmetia sangwani to control the Rhodes grass mealybug Antonina graminis is one of the best examples of classical biological control in the world. The situation could not be different in Brazil, where the pest has also been introduced, and kept under control after the release of its natural enemy. In this review, it is united information with respect to the successful use of a natural enemy in this country. Notes about the description and biology of the insects involved and rearing and release procedures of the parasitoid for the Rhodes grass mealybug control in Brazil will also be presented. RESUMO: O uso do parasitoide Neodusmetia sangwani para controlar a cochonilha-das-pastagens Antonina graminis é um dos melhores exemplos de controle biológico clássico no mundo. A situação não poderia ser diferente no Brasil, onde a praga foi introduzida e mantida sob controle após a liberação de seu inimigo natural. Nessa revisão são reunidas informações sobre o bem-sucedido uso de um inimigo natural nesse país. Serão apresentadas também notas sobre a descrição e biologia dos insetos envolvidos e procedimentos de multiplicação e liberação do parasitoide para o controle dessa cochonilha no Brasil.

This paper deals with the description of two new species of Horismenus Walker (Hymenoptera: Eulophidae) from Brazil, parasitoids of larvae of Adetus analis (Haldeman) (Coleoptera: Cerambycidae). Both species are similar to Horismenus steirastomae (Girault), a species that also parasitizes cerambycids. Adetus analis is a pest of Sechium edule (Jacq.) Swartz (Cucurbitaceae), a minor crop in Brazil, Argentina and U.S.A., but also feeds in stems of Pereskia aculeata Miller (Cactaceae), an ornamental plant that has become a problematic weed species in Africa, where it was introduced. The two new Horismenus species are described, diagnosed, and compared to H. steirastomae.

Two new species of Trichogramma are described: Trichogramma piracicabense sp. nov. and T. valmiri sp. nov. Additionally, T. manicobai from eggs of the cassava hornworm Erinnyis ello is redescribed, and new records on the distribution and host associations of species of Trichogramma from Brazil are presented.

The invasive gall wasp Quadrastichus erythrinae, a pest of Erythrina plants, is recorded for the first time in South America in Espirito Santo, Brazil. Research on Q. erythrinae and its potential natural enemies in this region is required to determine the need for classical biological control of this invasive pest.

Survey of hymenoptera parasitoids of pink-hibiscus-mealybug, Maconellicoccus hirsutus (Green, 1908) infesting Hibiscus rosa-sinensis was conducted in two municipalities of state of São Paulo, Brazil from August 2016 to August 2017. Nine species of chalcidoid wasps were obtained: Anagyrus kamali Moursi (1948); Anagyrus sp. aff. mirtesae Noyes and Menezes (2000); Anagyrus sp.; Bothriocraera bicolor Compere and Zinna (1955); Cheiloneurus sp., Gyranusoidea deionae Noyes (2000); Prochiloneurus sp. (Encyrtidae); Aprostocetus sp. (Eulophidae); and Chartocerus sp. (Signiphoridae). Anagyrus kamali and G. deionae were the most frequent species, corresponding to 67.26% and 22.62% of the parasitoids, respectively. Bothriocraera bicolor, Chartocerus and G. deionae are recorded for the first time associated with M. hirsutus. Gyranusoidea deionae and B. bicolor are recorded for the first time in Brazil. The seasonal study of M. hirsutus and its parasitoids was carried out in January to December 2017on 16 hibiscus plants, aligned in the hedge in the experimental area of the FCAV/UNESP in Jaboticabal, SP. For this purpose, ovisacs, nymphs and adults of mealybug were counting on infested plants and the adult parasitoids collected in Möerick traps. Maconellicoccus hirsutus was observed during the periods of January-March and October-December, with the highest infestation in January and February. In the traps, a total of 92 specimens of pink-mealybug parasitoids were obtained: 65% belonging to A. kamali and 35% to G. deionae.

A survey of the natural enemies of Aclerda takahashii (Kuwana, 1932) (Hemiptera: Aclerdidae) and Saccharicoccus sacchari (Cockerell, 1895) (Hemiptera: Pseudococcidae) was carried out in the state of São Paulo, Brazil. A total of ten associations were recorded, six parasitoid-host and four predator-prey, which three are new: parasitoids of the genus Eurytoma (Hymenoptera: Eurytomidae) and Hambletonia (Hymenoptera: Encyrtidae) associated with A. takahashii and S. sacchari, respectively; and the predator of the genus Diadiplosis (Diptera: Cecidomyiidae) with a S. sacchari. Anagyrus saccharicola Timberlake, 1932 and Mariola flava Noyes, 1980 (Hymenoptera: Encyrtidae) are reported for the first time in Brazil.

Summary Chalcodemus bicolor Fiedler (Coleoptera: Curculionidae) is the most recent pest in Brazilian Eucalyptus (Myrtaceae) plantations. Sampling in 2011 for parasitoids of this weevil recovered 4 Hymenoptera species, 3 in the genus Euderus (Eulophidae), comprising 98.4% of specimens, and Eurydinoteloides sp. (Pteromalidae). This is the first report of natural enemies of C. bicolor.

A pitangueira Eugenia uniflora L. (Myrtaceae) é uma frutífera nativa da América do Sul, podendo ser encontrada em quase todo o território brasileiro, bem como no Paraguai, no Uruguai e na Argentina. Nas folhas dessa planta, são encontradas galhas induzidas por Eugeniamyia dispar (Diptera: Cecidomyiidae). O objetivo deste trabalho foi determinar os parasitoides associados a E. dispar, a dinâmica populacional de E. dispar e dos parasitoides e a distribuição de galhas na planta. Ramos e folhas foram coletados quinzenalmente, durante as safras agrícolas de 2007/2008 e 2008/2009, em pomares de pitangueira localizados no município de Pelotas-RS, e transportados para o laboratório para a contagem do número de galhas. Do material coletado, foram individualizadas dez folhas em recipientes plásticos (200 mL) contendo 30 mL de uma solução à base de ágar-água (2%) e metilpara-hidroxibenzoato (nipagin) (0,2%). Os recipientes foram fechados e mantidos sob condições controladas de temperatura (24±2ºC), umidade relativa (70±10%) e fotofase (14h), sendo registrado, diariamente, o número de insetos emergidos. Obteve-se uma espécie de Hymenoptera, Rileya hegeli (Eurytomidae), como parasitoide de E. dispar. Quanto à dinâmica populacional de E. dispar e de R. hegeli, foi observado, nos dois anos de avaliação, que a população de ambos aumentou a partir de outubro, atingindo as maiores populações nos meses de dezembro, janeiro e fevereiro, decrescendo posteriormente. O número de galhas por folha variou de zero a 23, sendo que 61,19% das folhas apresentavam de uma a oito galhas e que o número de folhas com galhas por ramo variou de uma a nove, sendo que 63,00% dos ramos apresentaram de uma a três folhas infestadas.

The parasitism of Bemisia tabaci (Genn.) biotype B nymphs on cotton plants was observed during a research on resistance of cotton genotypes to this whitefly. The experiment was set in a greenhouse at the Experimental Station of the Instituto Agronômico (IAC), in Campinas, São Paulo State, Brazil. Samples of the parasitized nymphs were collected and maintained in laboratory to monitor the parasitism and obtain the adult parasitoids. A total of 129 adult parasitoids were obtained, including one Encarsia inaron (Walker), 13 En. lutea (Masi), and 115 Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae). This is the first report of Er. mundus in Brazil. Parasitismo em ninfas de Bemisia tabaci (Genn.) biótipo B em folhas de algodão foi observado durante pesquisa sobre resistência de genótipos de algodoeiro a essa mosca-branca. O experimento foi conduzido em casa de vegetação no Centro Experimental do Instituto Agronômico de Campinas (IAC). Amostras das ninfas parasitadas foram mantidas em laboratório para acompanhamento do parasitismo e obtenção dos adultos dos parasitoides. Foram coletados 129 adultos, sendo um espécime de Encarsia inaron (Walker), 13 de En. lutea (Masi) e 115 de Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae). Este é o primeiro registro de Er. mundus no Brasil.

RESUMO Phyllocnistis citrella (Lepidoptera: Gracillariidae), conhecido popularmente como “minador-dasfolhas-dos-citros”, é um dos principais insetos-praga da citricultura em vários países. Este trabalho teve como objetivos determinar as espécies e a variação sazonal de lepidópteros minadores e seus parasitoides, presentes na vegetação de crescimento espontâneo de um pomar orgânico de citros, a fim de verificar se P. citrella apresenta outras plantas como hospedeiras e se os parasitoides de outros minadores são os mesmos relatados para esta praga. O trabalho foi conduzido em Montenegro, RS, em um pomar do tangoreiro ‘Murcott’. Realizaram-se amostragens quinzenais, de maio/2003 a maio/2004, coletando-se em cada ocasião todas as folhas com minas, na área delimitada por um aro de 0,28 m2, que era lançado nas linhas e nas entrelinhas de 30 árvores sorteadas. No laboratório registrou-se o número de larvas e pupas de minadores por folha, mantidas até a emergência dos lepidópteros ou parasitoides. Registrou-se 11 espécies de lepidópteros minadores pertencentes às famílias Gracillariidae, Gelechiidae, Acrolepiidae, Nepticulidae e Tischeriidae; 15 espécies de plantas hospedeiras distribuídas em nove famílias e 12 espécies de himenópteros, das famílias Eulophidae e Braconidae. O número de larvas e pupas de minadores correlacionou-se negativamente com a temperatura média e a umidade relativa média. P. citrella não foi observada nas plantas espontâneas. Espécies de parasitoides incluídas nos gêneros Chrysocharis, Closterocerus, Sympiesis e Bracon já foram relatadas parasitando P. citrella em várias regiões do mundo e podem ser possíveis agentes de controle biológico deste inseto na área de estudo.