Zootaxa

**Studies on Neotropical crickets: On the Hemigryllus Saussure, 1877 taxonomic placement (Orthoptera: Grylloidea), with comments on Gryllidae classification, including new species and records**

OSCAR J. CADENA-CASTAÑEDA — Tue, 15 Jul 2025 00:00:00 +1200

The classification of the family Gryllidae and the composition of its subfamilies are commented, with special emphasis on the taxa from the Americas. As well, a key is provided for identifying Gryllidae subfamilies in the Neotropical region. The status of Hemigryllinae stat. rev. is restored as a subfamily, which only includes Hemigryllus, previously considered a tribe within Eneopterinae until now. Hemigryllinae stat. rev. and Hemigryllus are also redescribed, including an updated key for the species. The status of Hemigryllus ortonii is discussed, with a historical review of known records, which may belong to different species, while Hemigryllus kriechbaumeri stat. rev. is revalidated as the type species of the genus. Two new species are described: Hemigryllus gorochovi sp. nov. and Hemigryllus ankeri sp. nov. Additional specimens are also recorded for Hemigryllus woronovi and Hemigryllus columbi, with a precise locality for the latter being reported for the first time. Finally, the placement of Hemigryllinae stat. rev. within Gryllidae is discussed, as well as its adaptations for digging and swimming for its species.

**Three new species of the feather mite genus Trouessartia (Acariformes: Trouessartiidae) from passerines (Passeriformes) in the Asian part of Russia**

SERGEY V. MIRONOV, ARSENII V. DMITRYUKOV — Tue, 15 Jul 2025 00:00:00 +1200

Three new species of the feather mite genus Trouessartia are described from passerines from various regions in the Asian part of Russia: Trouessartia locustellae sp. nov. from the Pallas’s grasshopper warbler Helopsaltes certhiola (Pallas) (type host) and the Middendorff’s grasshopper warbler H. ochotensis (Middendorff) (Locustellidae), T. mugimaki sp. nov. from the mugimaki flycatcher Ficedula mugimaki (Temminck) (Muscicapidae), and T. pyrrhulae sp. nov. from the Eurasian bullfinch Pyrrhula pyrrhula Linnaeus (Fringillidae). Descriptions and differential diagnoses are supplemented with sequences of mitochondrial cytochrome c oxidase subunit I (CO1).

**A new species in the genus Milnesium (Eutardigrada) from USA (North Carolina)**

Tue, 15 Jul 2025 00:00:00 +1200

During recent research on autofluorescence in tardigrades a new species of Milnesium was discovered on the campus of Warren Wilson College (North Carolina, USA). We provide an integrative description of this new species based on morphology and genetics (COI, 18S rRNA and 28S rRNA sequences). The new species has six peribuccal lamellae, a smooth cuticle (but with pseudopores) and [3-3]-[3-3] claw configuration. This is a very common cluster of characters in the genus, and we provide a differential diagnosis for 24 similar species from which the new species differs by some morphological and morphometrical characters in addition to genetic differences.

A new montane species of stream-dwelling treefrog (Pelodryadidae) from the Star Mountains, Papua New Guinea

STEPHEN J. RICHARDS, GREGORY R. JOHNSTON, PAUL M. OLIVER — Tue, 15 Jul 2025 00:00:00 +1200

We describe a new species of pelodryadid treefrog from a montane stream traversing karst terrain in the Star Mountains of western Papua New Guinea. Litoria stellarum sp. nov. is morphologically similar to L. becki (Loveridge, 1945), a species that is widespread in montane grassland habitats in central Papua New Guinea, but can be distinguished by its more angular snout and the presence of vocal slits in adult males (absent in L. becki). Based on its morphology and ecology we are confident the new species belongs to a monophyletic clade of torrent-breeding Litoria that reaches its greatest diversity in the rugged mountains of New Guinea’s Central Cordillera. Litoria stellarum sp. nov. is the second species in the radiation of torrent-breeding Litoria to be described from high-elevation karst habitats in Papua New Guinea, however in the absence of better ecological data it is not clear whether these species can be considered karst specialists. The single known locality for the species is in a restricted high elevation habitat suggesting it might be vulnerable to climate change. However, we suggest it should be considered Data Deficient until such time as its distribution and ecology can be better assessed.

Epermenia reinhardgaedikei sp. nov., an overlooked species from central-southern Europe (Lepidoptera, Epermeniidae)

PETER HUEMER, TONI MAYR, JACQUES NEL, WOLFGANG STARK — Tue, 15 Jul 2025 00:00:00 +1200

Epermenia reinhardgaedikei sp. nov. is described from material collected in central Italy, south-eastern France, and eastern Austria. The species was hitherto mixed with the congeners E. theimeri Gaedike, 2001 and E. profugella (Stainton, 1856) due to superficial similarity in male genitalia. However, the new species is closest to E. iniquellus (Wocke, 1867), differing from that species and congeners in structures of male genitalia and by DNA barcodes. Adults, male and female genitalia are figured.

**The bee genus Colletes Latreille, 1802 (Hymenoptera: Apoidea: Colletidae) in West Africa**

MICHAEL KUHLMANN, GEORG GOERGEN — Tue, 15 Jul 2025 00:00:00 +1200

Bee species of the genus Colletes Latreille are revised for West Africa. In total four species are recorded from this area with one described as new: Colletes aragorn Kuhlmann sp. nov.. An illustrated key is provided to facilitate species identification.

**Studies on Neotropical grasshoppers: Estefaniacris gen. nov. (Orthoptera: Acrididae), a new Andean genus**

OSCAR J. CADENA-CASTAÑEDA, JUAN MANUEL CARDONA-GRANDA — Tue, 15 Jul 2025 00:00:00 +1200

A new genus and species of Neotropical ommatolampidines grasshoppers from the forests of the Colombian Andes are described. This new genus belongs to the subtribe Ommatolampidina (Ommatolampidini) and is distinguished from other genera mainly by its notably modified terminalia and unique genital characteristics. An updated key for the subtribe Ommatolampidina is provided, incorporating the newly described taxa and recent taxonomic changes. Finally, the habits and diversity of these Neotropical grasshoppers are discussed.

**Taxonomic revision of the genus Opamata Dworakowska, 1971 (Hemiptera: Cicadellidae: Typhlocybinae: Typhlocybini) with the description of one new species and two new records from China**

ZI-YUE DENG, JING-JING LI, XIAO-FEI YU, MAO-FA YANG, BIN YAN — Tue, 15 Jul 2025 00:00:00 +1200

The genus Opamata was established by Dworakowska in 1971, with Opamata kwietniowa Dworakowska as type species. Here one new species, Opamata zizhongi Yan & Yang, sp. nov., is described and illustrated and Opamata novembris Dworakowska and Opamata styczniowa Dworakowska, are newly recorded from China. In addition, the base composition of mitochondrial genome of Opamata lipcowa was reported for the first time. An updated key and a checklist of all species are provided. The type specimens are deposited in the Institute of Entomology of Guizhou University.

**A new species of Belostoma Latreille (Insecta: Hemiptera: Belostomatidae) from Brazil long-housed at the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”**

FABIANO STEFANELLO, DIEGO LEONARDO CARPINTERO, PABLO RICARDO MULIERI — Tue, 15 Jul 2025 00:00:00 +1200

Belostoma utiaritiensis Stefanello sp. nov. (Insecta: Hemiptera: Belostomatidae) is described and illustrated based on a specimen long-housed at the Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”. The specimen was collected in Mato Grosso, central-western Brazil in 1966. This new species is diagnosed by an elevated prosternal keel with apex pointed, article II of labium shorter than III, abdominal pubescence entirely covering the connexiva and mediosternites, dorsal arms of the phallosoma convergent at the apex, and the diverticulum folded at the apex forming an apicoventral protuberance. The new species is assigned to the Belostoma fittkaui species group and compared with its congeners. Additionally, a key to the species of the group is provided. Thus, the number of species of Belostoma recorded from Brazil increases from 49 to 50, from 18 to 19 in the state of Mato Grosso, and from three to four within the B. fittkaui group.

Expanding the geographic distribution and the first record from Brazil of Asymmetrione clibanarii Markham, 1975 (Isopoda: Bopyridae), an ectoparasite associated with hermit crabs of the genus Clibanarius Dana, 1852

Tue, 15 Jul 2025 00:00:00 +1200

Asymmetrione clibanarii Markham, 1975 is a bopyrid ectoparasite of the branchial chamber of hermit crab species from the genus Clibanarius Dana, 1852. This parasite was previously recorded in isolated sites along the western Atlantic: USA, Colombia, and Ascension Island. In this study, we expand the geographical distribution of Asymmetrione clibanarii southward to Brazil. Specimens were collected during low tide from intertidal zones at Paraíso Beach, municipality of Cabo de Santo Agostinho, Pernambuco, Brazil. Three pairs (one female and one male) of Asymmetrione clibanarii were exclusively found in the right branchial chambers of the three specimens of the host Clibanarius antillensis Stimpson, 1859. All females of A. clibanarii were ovigerous and accompanied by males. This record expands the known geographic distribution of A. clibanarii, suggesting its potential presence throughout the range of its host species, which are widely distributed in the Atlantic.