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A new species of tree crickets, Oecanthus beamerisp. nov., is described from the gypsum dunes of White Sands National Park in New Mexico, United States. The new species is currently known only from the type locality, where it appears to be specific to the gypsophile plant hoary rosemary mint (Poliomintha incana). This new species has the narrowed tegmina and calling song that are found in the nigricornis species group. Although it has morphological similarities to O. quadripunctatus and O. celerinictus, there are differences in the subgenital plates, tegminal measurements, coloring, tibial markings, song frequency, and song pulse rate. This new species has been given the common name White Sands tree cricket. We provide a key to all species in the nigricornis group. Video and song recordings are available online as Suppl. materials 1–8.

Amblyrhethus Kirby, 1906 is a genus of arboreal, undergrowth, and shrub crickets comprising, at present, seven species: one from Panama, one from Peru, two from Colombia, two from Brazil, and one with an unprecise locality. These crickets are seldom found in regular active collecting at night, although males produce a rather loud calling song. Unfortunately, their songs have never been recorded, and there is no ecological information for this genus so far. Here, we describe three new species from the Brazilian Atlantic Forest.

Sexual dimorphism (SD) is a common phenomenon in sexual species and can manifest in a variety of ways. Sexual size dimorphism (SSD) is commonly investigated, but it can be confounded with sexual shape dimorphism (SShD) if multivariate measures of size are not used. Univariate studies may also overestimate the prevalence or direction of SSD when the sexes are strikingly different in shape, which may be an issue in taxa such as Orthoptera and other terrestrial arthropods where maximum body size is strongly constrained. Here we tested for the occurrence of both SSD and SShD in the badlands cricket Gryllus personatus (Orthoptera, Gryllinae). We measured four body size dimensions—maxillae span, head width, pronotum length, and mean hind femur length—and used multivariate methods to test whether male and female adult badlands crickets were sexually dimorphic in size and/or shape. All the univariate dimensions were sexually dimorphic, with males having wider heads and maxillae than females and females having longer pronota and hind femora than males, which indicates SShD. However, multivariate methods failed to detect SSD, instead confirming that the sexes primarily differ in body shape. We show how a simple ratio of head width to pronotum length captures SShD in badlands crickets and apply it to iNaturalist, a citizen science platform, to broaden our findings. We propose that orthopterists studying SD minimally measure head width, pronotum length, and hind femur length as a standard that will allow a more repeatable and generalizable assessment of the prevalence and direction of both SSD and SShD.

The widespread Mediterranean cricket, Arachnocephalus vestitus (Orthoptera: Mogoplistidae), is hereby reported as a new record for Georgia. In total, four females have been examined in 2020 and 2021, of which three specimens have been collected, and the information on the fourth one is based on photographic evidence. Cytochrom oxydase I (COI) barcoding further validates our finding.

During a Gryllidae survey in the Southern Cameroonian Plateau, two new species of the tribe Turanogryllini Otte, 1987 were discovered and described, namely Turanogryllus zamakoensis Um Nyobe, Kekeunou & Bilong Bilong sp. nov. and Neogryllopsis gorochovi Um Nyobe, Kekeunou & Ma sp. nov. This finding extends the known distribution of the genera Turanogryllus Tarbinsky, 1940 and Neogryllopsis Otte, 1983. New environments are also recorded for these crickets, and an identification key for African species is proposed for these two genera.

The wood cricket Nemobius sylvestris (Bosc, 1792) is herein reported in North America for the first time. The species is currently known to be established in the vicinity of Rochester, New York, and Seattle, Washington, indicating two separate introductions. It is unclear when the species was first introduced to the region, nor what its potential ecological effects may be. The presence of this species in the USA was first noted via photos posted to iNaturalist, highlighting the value of citizen/community science platforms in detecting novel introductions.

The Landrevus species group includes four Velarifictorus species that are related to Landrevinae crickets (Velarifictorus elephas Gorochov, 1992, Velarifictorus bubalus Gorochov, 1992, Velarifictorus gradifrons Ingrisch, 1998, and Velarifictorus landrevus Ma, Qiao & Zhang, 2019). A new species of the group is discovered in the Yunnan Province of China, and it is described and illustrated here. Velarifictorus yunnanensis Liu & Yin, 1993 is recognized as a junior synonym of Velarifictorus flavifrons Chopard, 1966. The morphological variety of V. flavifrons ectoparamere is documented and studied.

Alternative food sources have become an important focus of research due to increased food demand coupled with reductions in traditional food productivity. In particular, substitutes for protein sources have been of increasing interest due to the unsustainability of traditional protein sources. Insects have been identified as a sustainable alternative to traditional protein sources, as they are easy to produce and contain essential proteins, fats, and minerals. However, mass-rearing insects requires similar considerations as farming traditional protein sources. To increase productively, growth and survival must be maximized at the highest possible densities while minimizing disease and food requirements. Here, we use the house cricket Acheta domesticus, a highly cultivated insect species, to investigate optimal densities for mass rearing at 14 days of age (4th instar). Nymphs were separated into density groups of 0.09, 0.19, 0.47, and 0.93 cricket/cm2 and monitored for growth and survival. Multiple regression revealed sex (p < 0.0001), density (p < 0.0001), and sex*density interaction (p = 0.0345) as predictors of growth rate. Survival to maturation was significantly reduced in both 0.47 (31%) and 0.93 (45%) cricket/cm2 groups compared to the controls. A second experiment was then conducted to investigate the starvation resistance of adult crickets reared from 14 days of age at 0.09, 0.19, 0.93, and 1.86 cricket/cm2. A second multiple regression analysis revealed only density (p < 0.0001) and to a lesser extent sex (p = 0.0005) to be predictors of starvation resistance. These results indicate that mass-rearing house crickets is most optimal at densities < 0.93 cricket/cm2, where impacts on survival and starvation are minimal. Although these results have implications for cricket mass rearing, research on other endpoints, including reproduction and the synergistic effects of other environmental factors, such as temperature and humidity, should be conducted.

Anaxipha (Saussure, 1874) are small, swordtail crickets found in much of eastern North America. Many species within the genus Anaxipha were only recently described and their calling songs characterized. However, little is known about their courtship songs or use of substrate-borne communication (drumming). This study is the first documentation of the existence of courtship songs and substrate-borne vibrational communication in the genus. Courtship songs and substrate-borne vibrational communication were first detected in the following species: Anaxipha exigua (Say, 1825), A. tinnulacita Walker & Funk, 2014, A. tinnulenta Walker & Funk, 2014, and A. thomasi Walker & Funk, 2014. When in the presence of a conspecific female, males of all four species perform courtship songs that are distinctly different in pattern of echeme delivery and syllable details compared to their respective calling songs. Additionally, males of all four species exhibited drumming behavior during courtship singing and variably during calling songs. Examination of video recordings of males drumming during courtship singing showed that they are apparently using the sclerotized portion of their mandibles to impact the substrate on which they are perched to create vibrations. Courtship song and drumming bout characteristics were statistically different among the four species studied here, although A. tinnulacita and A. tinnulenta were similar in some measurements. Drumming during calling songs was common only in A. tinnulacita, where drumming occurs predominately during the first forty percent and last twenty percent of the long echemes of calling songs. Additional study is needed to further explore the use of substrate-borne vibrational communication in this genus.

Seventeen species of the family Gryllidae were reviewed and a Modicogryllus sindhensis is described herein as new. Four species, namely Acheta hispanicus Rambur, 1838, Gryllus septentrionalis F. Walker, 1869, Callogryllus saeedi Saeed, 2000, and Miogryllus itaquiensis Orsini & Zefa, 2017 are recorded as new country and state records. Differences between similar species and a taxonomic key to the species of Sindh are provided.

Two new species, Anaxiphomorpha nonggangensissp. nov. and Anaxiphomorpha manereserratussp. nov., are reported from Guangxi Province, China. Descriptions and illustrations for the new species and a key to all known species of Anaxiphomorpha are provided.

The Phalangopsidae crickets (Grylloidea) of the Seychelles are examined following extensive field sampling on several main islands of the archipelago (Mahé, Silhouette, Praslin, La Digue). Despite the small area of these islands, six genera (12 species) are documented, including one new genus and five new species. The type species of the genus Seychellesia Bolivar, 1912 is transferred to the genus Paragryllodes Karny, 1909 as Paragryllodes nitidula (Bolivar, 1912) n. comb. The other species described in Seychellesia are transferred to the genus Seselia Hugel & Desutter-Grandcolas, n. gen., as Seselia longicercata (Bolivar, 1912) n. comb. and Seselia patellifera (Bolivar, 1912) n. comb. Two new species are also described in the genus Seselia Hugel & Desutter-Grandcolas, n. gen., Seselia coccofessei Hugel & Desutter-Grandcolas, n. gen., n. sp. (type species of the genus) and Seselia matyoti Hugel & Desutter-Grandcolas, n. gen., n. sp. The genera Phaeogryllus Bolivar, 1912 and Phalangacris Bolivar, 1895 are redescribed, including Phalangacris ferlegro Hugel & Desutter-Grandcolas, n. sp. and Phalangacris sotsote Hugel & Desutter-Grandcolas, n. sp. that are new to science. The genus Gryllapterus Bolivar, 1912 is redescribed and transferred from the Landrevinae (Gryllidae) to the Cachoplistinae (Phalangopsidae). New tribes are defined for the genus Paragryllodes (Paragryllodini Hugel & Desutter-Grandcolas, n. tribe) on the one hand, and for Seselia Hugel & Desutter-Grandcolas, n. gen., Phalangacris, Phaeogryllus and Gryllapterus (Seselini Hugel & Desutter-Grandcolas, n. tribe) on the other, using morphological characters and the results of molecular phylogenetic studies (Warren et al. 2019). Phaloria (Papuloria) insularis (Bolivar, 1912) (Phaloriinae) is redescribed and restricted to Mahé, and its calling song is documented for the first time, while Phaloria (Papuloria) bolivari Hugel & Desutter-Grandcolas, n. sp. is newly described from Silhouette. Identification keys are proposed for the genera of Seselini Hugel & Desutter-Grandcolas, n. tribe, and for the species of Seselia Hugel & Desutter-Grandcolas, n. gen. and Phalangacris. The confusion between the Mogoplistidae Ornebius succineus Bolivar, 1912 and the Phalangopsidae Heterotrypus succineus Bolivar, 1910 is discussed, and the name Subtiloria succineus (Bolivar, 1912) considered a nomen nudum.; Les grillons Phalangopsidae (Grylloidea) des Seychelles sont étudiés sur la base d'un échantillonnage intensif sur plusieurs îles principales de l'archipel (Mahé, Silhouette, Praslin, La Digue). Malgré la petite taille de ces îles, six genres (12 espèces) sont documentés, dont un genre nouveau et cinq espèces nouvelles. L'espèce type du genre Seychellesia Bolivar, 1912 est transférée dans le genre Paragryllodes Karny, 1909 en tant que Paragryllodes nitidula (Bolivar, 1912) n. comb. Les autres espèces décrites dans Seychellesia sont transférées dans le genre Seselia Hugel & Desutter-Grandcolas, n. gen., en tant que Seselia longicercata (Bolivar, 1912) n. comb. et Seselia patellifera (Bolivar, 1912) n. comb. Le genre Seselia Hugel & Desutter-Grandcolas, n. gen. comprend d'autre part Seselia coccofessei Hugel & Desutter-Grandcolas, n. gen., n. sp. (espèce type du genre) et Seselia matyoti Hugel & Desutter-Grandcolas, n. gen., n. sp. Les genres Phaeogryllus Bolivar, 1912 et Phalangacris Bolivar, 1895 sont redécrits, Phalangacris ferlegro Hugel & Desutter-Grandcolas, n. sp.et Phalangacris sotsote Hugel & Desutter-Grandcolas, n. sp. sont nouveaux pour la science. Le genre Gryllapterus Bolivar, 1912 est redécrit et transféré des Landrevinae (Gryllidae) aux Cachoplistinae (Phalangopsidae). Des tribus nouvelles sont définies pour le genre Paragryllodes (Paragryllodini Hugel & Desutter-Grandcolas, n. tribu) d'une part, et pour Seselia Hugel & Desutter-Grandcolas, n. gen., Phalangacris, Phaeogryllus et Gryllapterus (Seselini Hugel & Desutter-Grandcolas, n. tribu) d'autre part, sur la base de la morphologie et des données de phylogénie moléculaire (Warren et al. 2019). Phaloria (Papuloria) insularis (Bolivar, 1912) (Phaloriinae) est finalement redécrite de Mahé, et son chant d'appel documenté pour la première fois, tandis que Phaloria (Papuloria) bolivari Hugel & Desutter-Grandcolas, n. sp. est nouvellement décrite de Silhouette. Des clés d'identification sont proposées pour les genres de Seselini Hugel & Desutter-Grandcolas, n. tribu, ainsi que pour les espèces de Seselia Hugel & Desutter-Grandcolas, n. gen. et Phalangacris. La confusion entre Ornebius succineus Bolivar, 1912 (Mogoplistidae) et Heterotrypus succineus Bolivar, 1910 (Phalangopsidae) est discutée, et le nom Subtiloria succineus (Bolivar, 1912) considéré comme un nomen nudum.

International audience; Morphological diagnoses are given for the cricket family Trigonidiidae and its two monophyletic subfamilies, the Trigonidiinae and the Nemobiinae. Owing to their morphological characters, we transfer the extant genus Lissotrachellus Hubbell, 1838 from the Gryllidae: Pentacentrinae to the Trigonidiidae: Nemobiinae. Lissotrachellus was the type genus of Lissotrachelini including also Trigonidomimus Caudell, 1912 and Tohila Hubbell, 1938 which are here transferred to Pentacentrinae incertae sedis. The fossils currently attributed to the Trigonidiidae and its subfamilies are reviewed, in order to facilitate future phylogenetic studies. Few fossils can actually be classified in Nemobiinae or Trigonidiinae, and most are Cenozoic: the oldest nemobiine is the Eocene Baltonemobius fossilis Gorochov, 2010 (37.2–33.9 Ma), while the oldest representatives of the crown group Trigonidiinae date from the Miocene (20.43–13.65). The early Cretaceous Liaonemobius tanae Ren, 1998, originally described in the Trigonidiinae, and currently listed in the Gryllidae, proved an Elcanidae. The mid-Cretaceous Birmaninemobius hirsutus Xu et al., 2020, described in the Nemobiinae, is here transferred to the stem group Trigonidiinae.

The article reviewed species of genera of Pteronemobius Jacobson, 1904, Speonemobius Chopard, 1924, Parapteronemobius Furukawa, 1970, Dianemobius Vickery, 1973, Polionemobius Gorochov, 1983, Giganemobius Shen & He, 2020, Qionemobius Shen & He, 2020 and proposed four new genera, Claranemobius He & Ma, gen. n., Erexitonemobius He & Ma, gen. n., Fibunemobius He & Ma, gen. n. and Impetunemobius He & Ma, gen. n., and nine new species, Claranemobius yaoquensis He & Ma, sp. n., Erexitonemobius bellus He & Ma, sp. n., Fibunemobius tamquam He & Ma, sp. n., Homonemobius amare He & Ma, sp. n., Impetunemobius brunneis He & Ma, sp. n., Polionemobius Chayuensis He & Ma, sp. n., Pteronemobius (Pteronemobius) litore He & Ma, sp. n., Pteronemobius (Pteronemobius) choui He & Ma, sp. n. and Speonemobius minor He & Ma, sp. n..

Based on both morphological characters and phylogenetic relationships, one new genus Progoniogryllus gen. nov. and two new species, Progoniogryllus rotundus sp. nov. and Progoniogryllus directus sp. nov., are proposed. The new genus is compared with similar genera of Gryllodes Saussure, 1874, Parasongella Otte, 1987, Callogryllus Sjöstedt, 1910 and Goniogryllus Chopard. 1936 by morphological and phylogenetic methods. Based on the knowledge so far, the new genus is very close to Goniogryllus. All the new taxa are described and illustrated, and some information on mating behavior of the new was also provided.

In the original description of Allonemobius walkeri Howard & Furth, 1986, the authors describe the species’ calling songs in a table that included trill length, length of the interval between trills, pulse rate, and carrier frequency for four individuals. Further investigation of the acoustics of this species reveals that the calling songs are composed of syllables organized into echemes composed of a varying number of syllables, and organized into groups of echemes, of variable length. The echemes are separated by intervals of various lengths. The calling song is pleasing to the ear, with ~27 syllables per second and a carrier frequency of ~7.7 kHz at 25°C. The characteristics of the echemes and echeme intervals are significantly different when the cricket is singing in sunlight compared to darkness. In sunlight, echemes are shorter, but echeme intervals are longer. There is no effect on calling bout lengths. Courtship songs are quieter than calling songs, with a random delivery of soft and loud chirps in addition to fainter, rhythmic sounds randomly distributed between the chirps. Courtship songs are interspersed with long bouts of calling songs with displays lasting hours.

Crickets stand out for the production of acoustic signals used in intraspecific communication, which is present in the reproductive and agonistic behaviour of species. The most common repertoire in...

Eutrombidium carajas sp. nov. (Acari: Microtrombidiidae: Eutrombidiinae) is described and illustrated from larvae ectoparasitic on Phalangopsis sp. (Orthoptera: Grylloidea: Phalangopsidae) from Brazil. Eutrombidium carajas sp. nov. belongs to the species group with large and deeply incised lateral coxala I, and coxalae II and III. A key to world larval species of Eutrombidium Verdun is provided.

Crickets (Orthoptera: Grylloidea) are a highly diverse and successful group that due to their chirping are often heard more often than they are seen. Their omnivorous diet allows them to exist in a variety of terrestrial habitats around the world. In some environments, cricket populations can build up and become plagues, resulting in significant damage to seedling crops. A new genus and species of cricket, Pherodactylus micromorphus gen. et sp. nov. (Orthoptera: Gryllidae) is described from mid-Cretaceous Myanmar amber. The new genus is characterized by the following features: head without prominent bristles, pronotum longer than wide, middle of pronotal disk with two distinct large dark “eyespots”, fore leg robust and 3 apical spurs arranged on inner side of fore leg tibia. Shed portions of a lizard skin adjacent to the specimen reveal possible evidence of attempted predation.

Mariner-like elements (MLEs) are among the most widespread DNA transposable elements in eukaryotes. Insects were the first organisms in which MLEs were identified, however the diversity of MLEs in the insect order Orthoptera has not yet been addressed. In the present study, we explore the diversity of MLEs elements in 16 species of Orthoptera belonging to three infraorders, Acridoidea (Caelifera), Grylloidea (Ensifera), and Tettigoniidea (Ensifera) by combining data mined from computational analysis of sequenced degenerative PCR MLE amplicons and available Orthoptera genomic scaffolds. In total, 75 MLE lineages (Ortmar) were identified in all the studied genomes. Automatic phylogeny-based classification suggested that the current known variability of MLEs can be assigned to seven statistically well-supported phylogenetic clusters (I–VII), and the identified Orthoptera lineages were distributed among all of them. The majority of the lineages (36 out of 75) belong to cluster I; 20 belong to cluster VI; and seven, six, four, one and one lineages belong to clusters II, IV, VII, III, and V, respectively. Two of the clusters (II and IV) were composed of a single Orthoptera MLE lineage each (Ortmar37 and Ortmar45, respectively) which were distributed in the vast majority of the studied Orthoptera genomes. Finally, for 16 Orthoptera MLE lineages, horizontal transfer from the distantly related taxa belonging to other insect orders may have occurred. We believe that our study can serve as a basis for future researches on the diversity, distribution, and evolution of MLEs in species of other taxa that are still lacking the sequenced genomes.

Aversive learning has been studied in a variety of species, such as honey bees, mice, and non-human primates. Since aversive learning has been found in some invertebrates and mammals, it will be interesting to know if this ability is shared with crickets. This paper provides data on aversive learning in male and female house crickets (Acheta domesticus) using a shuttle box apparatus. Crickets are an ideal subject for these experiments due to their well-documented learning abilities in other contexts and their readily quantifiable behaviors. The shuttle box involves a two-compartment shock grid in which a ‘master’ cricket can learn to avoid the shock by moving to specific designated locations, while a paired yoked cricket is shocked regardless of its location and therefore cannot learn. Baseline control crickets were placed in the same device as the experimental crickets but did not receive a shock. Male and female master crickets demonstrated some aversive learning, as indicated by spending more time than expected by chance in the correct (no shock) location during some parts of the experiment, although there was high variability in performance. These results suggest that there is limited evidence that the house crickets in this experiment learned how to avoid the shock. Further research with additional stimuli and other cricket species should be conducted to determine if house crickets and other species of crickets exhibit aversive learning.

Signalling via substrate vibration represents one of the most ubiquitous and ancient modes of insect communication. In crickets (Grylloidea) and other taxa of tympanate Ensifera, production and detection of acoustic and vibrational signals are closely linked functionally and evolutionarily. Male stridulation produces both acoustic and vibrational signal components, the joint perception of which improves song recognition and female orientation towards the signaller. In addition to stridulation, vibrational signalling mainly through body tremulation and/or drumming with body parts on the substrate has long been known to be part of crickets' close-range communication, including courtship, mate guarding and aggression. Such signalling is typically exhibited by males, independently or in conjunction with stridulation, and occurs literally in all cricket lineages and species studied. It is further also part of the aggressive behaviour of females, and in a few cricket groups, females respond vibrationally to acoustic and/or vibrational signals from males. The characteristics and function of these signals have remained largely unexplored despite their prevalence. Moreover, the communication potential and also ubiquity of cricket vibrational signals are underappreciated, limiting our understanding of the function and evolution of the cricket signalling systems. By providing a concise review of the existing knowledge of cricket perception of vibrations and vibrational signalling behaviour, we critically comment on these views, discuss the communication value of the emitted signals and give some methodological advice respecting their registration and control. The review aims to increase awareness, understanding and research interest in this ancient and widespread signalling mode in cricket communication.

The family Gryllidae is reviewed, resulting in the recognition of seventeen species, of which one is Modicogryllus? described herein as new. Four species namely Acheta hispanicus Rambur, 1838, Gryllus septentrionalis F. Walker, 1869 and Callogryllus saeedi (Saeed 2000) and Miogryllus itaquiensis Orsini and Zefa, 2017 recorded as new country and state records. Differences to similar species are given and a taxonomic key to species of the Sindh Pakistan is provided.

Grylloidea is a large superfamily of orthopteran insects, comprising over 4,000 species in four extant families (Gryllidae, Mogoplistidae, Gryllotalpidae and Myrmecophilidae) and two extinct families (Baissogryllidae and Protogryllidae) to date (Resh & Cardé, 2009; Cigliano et al., 2018; Wang et al., 2019). Grylloids, commonly known as true crickets, are a group of adaptable insects occurring in all the temperate parts of the world except the highest mountain peaks. And interestingly, there are several apterous grylloid genera (e.g., Caconemobius) living in mangrove swamps, where they use the stems to submerge themselves in saltwater and are able to “skate” on water surfaces (Resh & Cardé, 2009; Kim & Kim, 2010).

A new species of Oecanthus is described from Mexico. Oecanthus mhatreaesp. nov. occurs in central Mexico in the understory of tropical deciduous forest. Oecanthus mhatreaesp. nov. is currently known only from the Corregidora area of the Mexican state of Querétaro. The widened tegmina and chirp-like brief trills song are consistent with some members of the rileyi species group; however, this new species of tree cricket is different in several aspects. The chirp-like brief trills are generally irregularly spaced, it does not have the expected grouping of the chirp pulses, and the colors of buff, light olive green, or light brown are vastly different than the four known pale green species in the rileyi species group of the Western Hemisphere. Morphology, habitat, and song details of this new species, with the common name of Otomi tree cricket, are provided in this paper. Video can be viewed at www.oecanthinae.com.

A new Anaxipha species is described from a locality in southeastern Arizona adjacent to the border with Mexico. The species is unique among the North American fauna by virtue of the broad tegmina, distinctive male genitalia, and calling song phrased in an irregular chirp with a variable pulse train rate. The possibility that the behavioral repertoire of this species includes aggressive song as well as calling song is discussed.

Baissogryllidae is an extinct family of the insect superfamily Grylloidea, previously known from Late Jurassic – Early Cretaceous time. A new genus and species, Sinagryllus xinjiangensis gen. et sp. nov., is described here based on a well-preserved forewing from the Lower Jurassic Sangonghe Formation of Xinjiang, northwestern China. It can be attributed to Baissogryllidae based on the combination of the following characteristics: a true mirror in the male tegminal stridulatory apparatus; and a distinct widening of the area between CuA2, lateral part of the diagonal vein, and proximal part of the proximal branch of MP+CuA1. This find represents not only the earliest record of Baissogryllidae, but also the first fossil wing of Grylloidea reported from China.

Made available in DSpace on 2021-06-25T10:31:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-05-25 Erebonyx catacumbae, new genus and species of a troglobitic phalangopsid cricket are described from Brazil. Few specimens were collected from a limestone cave located in the municipality of Campo Formoso, northern State of Bahia, in a semi-arid zone characterized by the Caatinga vegetation. A brief discussion on troglomorphisms is provided, as well as some ecological remarks and potential threats for this species. Departamento de Zoologia Instituto de Biociências Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP) Centro de Estudos em Biologia Subterrânea Setor de Biodiversidade Subterrânea Departamento de Ecologia e Conservação Universidade Federal de Lavras Departamento de Zoologia Instituto de Biociências Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP)

The Atlantic beach cricket Pseudomogoplistes vicentae Gorochov, 1996 (Orthoptera: Grylloidea: Mogoplistidae) is among the rare Orthoptera species that live exclusively in coastal habitats. It inhabits cobble beaches from North Africa to Great Britain, with populations known in Morocco, Portugal, Spain, France, Channel Islands, Wales and England. P. vicentae was found on the Spanish continental coast for the first time in 2018, in Asturias. The discovery of three populations in the Basque autonomous community (Northern Spain) is reported here, and useful information for increasing its detection and monitoring its populations is provided.

Duolandrevus species are brown, smooth and shiny, and armed with short tegmina. There are twelve species recorded from China. We redescribed five species of them and reported a new species, Duolandrevus longlouensis sp. n., discovered in Hainan Island, China. The new one belongs to the subgenus Eulandreus and is similar to Duolandrevus obsidianus He, 2019 and Duolandrevus dendrophilus (Gorochov, 1988), but differs from them in body size and details of tegmina and genitalia. Besides description and illustration of the five recorded species and one new species, keys and distribution map of Chinese bark crickets were provided.