Contributions to Odontogryllini (Orthoptera: Gryllidae: Landrevinae) with comments on its taxonomic status and description of a new species of Xulavuna de Mello & Campos, 2014.

Odontogryllini is a tribe of ground-dwelling crickets exclusive to America. After several taxonomic rearrangements, this tribe has five genera and 23 species now placed in the subfamily Landrevinae. These crickets have dorsoventrally depressed bodies and are moderately to densely covered with bristles. The males may bear tegminal, metanotal, or tergal glands. In this contribution, we discuss the taxonomic status and the morphological features of Odontogryllini and the other two tribes of Landrevinae: Landrevini and Prolandrevini. The presence of dorsal spines between the outer spurs of the hind tibia distinguishes Odontogryllini from Prolandrevini, and the straight or slightly arcuate but never S-shaped stridulum from Landrevini. We also propose the enlarged and plate-like rami as a diagnostic characteristic to distinguish Odontogryllini from Landrevini. Additionally, we describe a new species of the genus Xulavuna de Mello & Campos from the Brazilian Amazon Rainforest, named Xulavuna krenakore sp. nov..

Peulerneca ubaira gen. et sp. nov.: A new Lernecina cricket with white and hyaline forewings from the Brazilian Atlantic Forest (Phalangopsidae, Luzarinae, Lernecina).

Here we describe a new genus and species of cricket belonging to Lernecina from the Brazilian Atlantic Forest. It is presently known only from Ubaíra, State of Bahia, Brazil. The new genus is the only known member of this subtribe having males with a mostly white and hyaline dorsal field of the forewing (an additional genus with that condition is in the process of being described).

Studies on Neotropical crickets: Crinklyalis n. gen., a new cricket genus (Orthoptera: Phalangopsidae: Paragryllinae) from the foothills of theColombian Andes.

A new genus of small phalangopsids (Orthoptera: Phalangopsidae) from the foothills of the Colombian Andes is described. Crinklyalis n. gen. is distinguished from the other genera of the subtribe Strogulomorphina (Paragryllini) by the modification in the mesal region of the tegmina, apparently an acoustic chamber; reduction of wing venation; male genitalia tubular, elongated and mostly membranous, with only the distal section sclerotized. Additionally, the key for the identification of the genera of the subtribe was updated, and the morphology of the new genus was discussed, as well as distributional gaps that currently exist for the Strogulomorphina taxa.

Studies on Neotropical crickets: A new Perugryllae cricket (Orthoptera: Gryllidae: Gryllinae: Gryllini: Brachytrupina) from the foothills of the Colombian Andes.

A new tiny field cricket species of the genus Laureopsis (Orthoptera: Gryllidae), from the foothills of the Colombian Andes is described. With the description of Laureopsis andinus n. sp., the distribution of the Perugryllae Group expands outside the Amazon rainforest of Colombia and Peru, and is recorded for the first time in areas of Andean influence. A distribution map and a key for the identification of the species of the group are also provided. Finally, the morphology and distribution of the species of the two genera known for the Perugryllae group are discussed.

Taxonomic redescription, distribution and rediscovery of Plicigastra himalayana Uvarov, 1924 (Orthoptera: Tettigoniidae: Platycleidini) from Western Himalaya.

In India the genus Plicigastra is represented by single species Plicigastra himalayana Cigliano et al. (2022). Uvarov (1924) reported the species from the Punjab region of India, based on only female specimens. The authors in the present paper described both male and female. Also, SEM images of male stridulatory file are given. The dark flightless Bush-cricket species is widespread in the forested region of northern part of Kashmir, which starts from Baramulla to Bandipora, situated at an elevation of 3200 m a.s.l and is part of the Western Himalayan Mountain mixed forest Eco region.

Studies on Neotropical crickets: Mellogryllus mutus n. gen. et n. sp., an intriguing new genus and species of cricket of the Miogryllae Group (Orthoptera: Gryllidae: Gryllinae: Gryllini: Brachytrupina) from the Brazilian Atlantic Forest.

A new monotypic genus, Mellogryllus mutus n. gen. et n. sp., is described from the dense ombrophilous forests of the Brazilian coastal Atlantic Forest. This new genus is included within the genus-group Miogryllae due to the structure of the male genitalia. The key for the genera of the Group Miogryllae is also updated. Finally, the morphological particularities of Mellogryllus n. gen. are discussed, such as the presence or absence of tympanum in the different sexes, variation in the number of spurs on the legs, and the modification of the first pair of legs for underground life.

A new species of Cephalophlugis Gorochov, 1998 (Orthoptera: Tettigoniidae: Meconematinae: Phlugidini) from Southern Brazil, with bioacoustics and cytogenetics.

Cephalophlugis Gorochov, 1998 is a Neotropical genus of predatory katydids with two valid species, Cephalophlugis cephalotes (Bolvar, 1888) (from So Paulo, Brazil) and Cephalophlugis setosa Gorochov, 2012 (from Sucumbios, Ecuador). Herein, we describe a third species of the genus, Cephalophlugis gaucho sp. nov., from Rio Grande do Sul, Brazil. This species is easily distinguished from the others by the color of the hind wings and the number of spurs on the fore and middle legs. The calling song is composed of a long phrase with a series of syllables that vary in emission rate from beginning to end, with a dominant frequency of 23.43 0.6 (22.1224.37, n=11) kHz. So far, the species sings at the lowest frequency among the Phlugidini. From the chromosomal perspective, C. gaucho sp. nov. presents the karyotype 2n=31, X0, with the complement conserved within Meconematinae.

Studies on chevron crickets: Contribution to the knowledge of Lutosinae/ini taxa (Orthoptera: Anostostomatidae).

In this contribution to the study of chevron crickets, we focus on several taxa of the subfamily/tribe Lutosinae/ini. Historical background was made on the classification of this group. Lutosa is redescribed, defining the generic and specific limits, thus providing a key for identifying the species based on males and another based on females. In addition, two new species are described: Lutosa morsellii n. sp. and Lutosa quaresmai n. sp.; L. marginalis, L. cubaensis and L. goeldiana were redescribed, and L. surda n. syn., was synonymized under L. paranaensis. Other species previously allocated in Lutosa are relocated as follows: Lutosa obliqua and L. azteca are again synonymized under Licodia pallipes; Lutosa inermis is moved back to Dolichochaeta (D. inermis comb. rev.). The genus Neolutosa is studied, grouping three species N. emarginata (with new specimens that rule out its presence in Central America), N. aculeata (with additional specimens, erroneously identified in the past as L. brasiliensis) and N. horribilis n. comb. (this species is transferred from Lutosa). A key to species is also provided. Records for Apotetamenus clipeatus are reported for the Brazilian Amazon and the states of Mato Grosso and So Paulo (Brazil). Finally, the classification of the family Anostostomatidae and the subfamily / tribe Lutosinae/nini is discussed.

Studies on Neotropical Pseudophyllinae: The status of the genus Brachyauchenus Brunner von Wattenwyl, 1895 and its species (Orthoptera: Tettigoniidae: Pseudophyllinae: Platyphyllini).

In this contribution to the subfamily Pseudophyllinae in the Neotropics, we focus on reviewing the status of the genus Brachyauchenus and its four included species. After this revision, the genus remains monotypic, including only B. castaneus (type species), so it is necessary to provide a new diagnosis, since the current has characteristics of species that in the past was moved to Triencentrus, in addition to the characteristics of the species that are being excluded here. B. castaneus is redescribed to complement the characteristics of the genus, the unknown female is described, and new distribution data are provided, refuting the presence of this species in Bogot, Colombia, its type locality. Brachyauchenus festae and B. minutus are grouped into the new genus Mikrischyrum n. gen. (Platyphyllini) which is similar to Baliophyllum and Drepanoxiphus, and a key is provided to differentiate these species. Brachyauchenus varicosus is being moved to the genus Stenoschema (Pleminiini), restricting the distribution of Brachyauchenus to the center and north of the eastern slope of the Colombian Andes and the new genus in Panama and the Peruvian Amazon. A map is included with the distribution data of the species studied here. Finally, the variation of the coloration of some species and the current taxonomic panorama of the tribe Platyphyllini are discussed.

A new genus and three new species of Agraeciini (Orthoptera: Tettigoniidae: Conocephalinae) from the Brazilian Atlantic Forest, with comments on the function of some phallic components.

This contribution describes a new genus and three new species of Agraeciini from the Brazilian Atlantic Forest, Warimiri madiba gen. et sp. nov., Warimiri zumbi gen. et sp. nov., and Warimiri karutasywa gen. et sp. nov.. The new genus resembles the genera Hyperomerus Redtenbacher and Dectinomima Caudell and probably is closely related to them, but the internal and external male genitalia components distinguish the three taxa. We also provide a brief comment about the function of the internal components of the phallic complexes of Warimiri gen. nov. and Hyperomerus.

Rediscovering the poorly-known Neotropical katydid Hyperomerus crassipes Redtenbacher, 1891 (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini): description of male reveals the synonymic status of Uchuca Giglio-Tos, 1898.

Hyperomerus Redtenbacher is a genus of Neotropical katydid with only one species, H. crassipes. For more than one hundred years, the only specimen known was the female holotype. Now, more three exemplars were found deposited in the Zoological Collection of the Universidade Federal do Amazonas in Brazil, including the unknown male, which reveals the congeneric status with Uchuca Giglio-Tos species and, consequently, this last genus is being made a junior synonym of Hyperomerus. Additionally, H. crassipes is redescribed, and the records of all species now included within the genus Hyperomerus are updated.

A new genus and species of Agraeciini (Orthoptera: Tettigoniidae: Conocephalinae) from Amazon Rainforest.

This paper describes a new genus and species of Agraeciini from the Brazilian Amazon Rainforest, Wuyjugu pizai gen. et sp. nov., the 23rd species of Agraeciini recorded in Brazil. The female bears a very long and straight ovipositor, while the male has a completely membranous phallic complex, traits not seen in any of the Agraeciini genera of South-America.

Clarification of the katydid genus Uchuca Giglio-tos, 1898 (Orthoptera: Tettigoniidae): A new species in the Brazilian Amazon Rainforest.

This paper accomplishes three tasks: Firstly, description of a new species, Uchuca almeirina sp. nov., from the Brazilian Amazon Rainforest, specifically from Monte Dourado, Almeirim, Pará. Secondly, it is proposed that Uchuca macroptera Montealegre-Z & Morris, 2003 be made a synonym of Uchuca ferreirai (Piza, 1976). Thirdly, a compilation of the generic distribution is presented, which includes new records of Uchuca amacayaca Montealegre-Z & Morris (2003) in Brazil and Uchuca similis Montealegre-Z & Morris (2003) in Colombia and Brazil, and the amplification of the occurrences of U. ferreirai.