Zootaxa

Delphacidae (Hemiptera: Delphacoidea) of the Indian sub-continent: annotated checklist with keys to subfamilies and tribes

S. DEVI THANGAM, THIERRY BOURGOIN, CHARLES R. BARTLETT — Fri, 27 Jun 2025 00:00:00 +1200

A checklist of Delphacidae species is provided with a dichotomous key for the subfamilies and tribes of the family from the Indian-subcontinent. Accordingly, the family Delphacidae is represented by four subfamilies, six tribes, 55 genera, and 129 species. Among these, Delphacinae is the most diverse subfamily, represented by two tribes and 46 genera.

**A new species of the genus Ostrovus Ricker, 1952 (Plecoptera: Perlodidae) from northern Kyushu, Japan, with notes on the male drumming signal**

SATOKO HANADA — Fri, 27 Jun 2025 00:00:00 +1200

A new species of the genus Ostrovus Ricker, 1952 is described from northern Kyushu, Japan, on the male and female adults, the egg, and the male drumming signal. The new species is distinguished by blackish body and wings and the male epiproct tip having a sclerotized semicircular dorsal top and a beak-shaped apex in lateral view. Male drumming calls were produced by percussive tapping of the ventral lobe and had a grouped bi-beat signal pattern. In addition, the characteristics of the new species and two known species, Ostrovus mitsukonis (Okamoto & Kohno, 1940) and Ostrovus nikkoensis (Okamoto, 1912) are summarized, and the morphological characteristics of male and female adults of O. mitsukonis and O. nikkoensis are illustrated.

Epiophlebia laidlawi daliensis, a new subspecies from Hengduan Mountains in Yunnan (Insecta, Odonata, Epiophlebiidae)

Fri, 27 Jun 2025 00:00:00 +1200

A new subspecies Epiophlebia laidlawi daliensis Zhang, Yang, Wei & Lyu, subsp. nov. is described from adult and larval specimens collected at Mt Cangshan in the Hengduan Mountains, Dali Bai Autonomous Prefecture, Yunnan, China. The holotype male was collected by Hao-miao Zhang and Rui-bin Song on 22 May 2022. Both sexes and larva of the new subspecies are compared with those of Epiophlebia l. laidlawi Tillyard, 1921 and E. superstes (Selys, 1889). A total of 15 sequences of ITS1 and 17 sequences of ITS2 were analysed and used for the phylogenetic comparisons. According to this analysis, E. l. daliensis subsp. nov. and E. l. laidlawi share a very close phylogenetic relationship, while E. l. daliensis, subsp. nov. and E. superstes are genetically more distant from one another than are E. l. laidlawi and E. superstes. Both neighbor-joining (NJ) and maximum likelihood (ML) methods produced consistent phylogenetic trees, with all E. l. daliensis specimens clustering with E. l. laidlawi. The existence of the named ‘species’ E. sinensis Li & Nel, 2012 (which in molecular analyses is retrieved within E. superstes) is considered doubtful, hence it is not considered here. Its status will be evaluated in another publication.

**Notes on Berinda Roewer, 1928 (Araneae: Gnaphosidae), with description of two new species from Turkey**

TARIK DANIŞMAN, ERSEN AYDIN YAĞMUR, İLHAN COŞAR, RAHŞEN S. KAYA — Fri, 27 Jun 2025 00:00:00 +1200

Two new species of the gnaphosid spider genus Berinda Roewer 1928 are described from Turkey: B. anlasi sp. nov. (♂; Gerger District, Adıyaman Province) and B. orgeli sp. nov. (♂♀; Hassa District, Hatay Province). Additionally, the first description of the female and a redescription of the male of B. cooki Logunov, 2012 are provided, along with the first record of B. infumata (O. Pickard-Cambridge, 1872) from Turkey. Images of the habitus and copulatory organs of these species are also included.

**Two new nematode species: Axonolaimus rushanensis sp. nov. (Axonolaimidae) and Trichromadora spheribulba sp. nov. (Chromadoridae) from the Yellow Sea, China**

YANWEI LV, HUIYING YU, MENGNA WANG — Fri, 27 Jun 2025 00:00:00 +1200

Two new free-living nematode species, Axonolaimus rushanensis sp. nov. and Trichromadora spheribulba sp. nov. are described from Rushan, Yellow Sea, China. Axonolaimus rushanensis sp. nov. is characterized by two cervical setae, amphidial fovea loop-shaped with rounded outline at the level of buccal cavity, spicules short and arcuate, cuticularised and with straight capitulum, gubernaculum with dorso-caudal apophyses and tail conical. Trichromadora spheribulba sp. nov. is characterized by long and slender body, buccal cavity with one large hollow dorsal tooth and two small subventral teeth, pharynx with an obvious posterior bulb, spicules long and arc-shaped, gubernaculum boat-shaped and swollen in the middle part, seven unequidistant cup-shaped supplements and tail conical. An identification key to valid species of the genus Trichromadora is also given.

**New morphological aspects and taxonomical potential of the furca in the ostracod genus Neonesidea (Podocopida: Bairdioidea)**

REINA ASABA, ERIKA ASABA, AKIRA TSUKAGOSHI — Fri, 27 Jun 2025 00:00:00 +1200

The chaetotaxy and microstructure of the furca were examined in three interstitial and one epifaunal species of the ostracod genus Neonesidea (Podocopida: Bairdioidea). Of the seven setae found on the furcae of the examined species, the thick and curved first to third setae from the distal end were relatively long and had two rows of serrations. The fourth and fifth setae, with intermediate lengths, were covered by numerous setulae of varying lengths and orientations. The sixth and seventh setae were shortest, with setulae and openings at the tips. These morphological variations suggest functional differences, that is the furca does not only have a mechanoreceptor function, but also a chemoreceptor function according to the direction of the setulae and the openings at the tips. Specific and sexual differences were observed when comparing the relative lengths of the seven setae on the furca. In contrast, there were no noticeable furcal characteristics that distinguished the three interstitials from the epiphytic species examined here.

**Redescriptions of three species in the louse genus Myrsidea (Insecta: Phthiraptera: Amblycera)**

MAREK SCHNEIDER, STANISLAV KOLENCIK, IVAN LITERAK, OLDRICH SYCHRA — Fri, 27 Jun 2025 00:00:00 +1200

Three species of chewing lice in the genus Myrsidea are redescribed and illustrated. They are: Myrsidea aegithali Blagoveshtchensky, 1940 from Aegithalos caudatus alpinus (Hablizl, 1783); Myrsidea flavida (Piaget, 1880) from Eurylaimus ochromalus Raffles, 1822; and Myrsidea franciscoloi Conci, 1942 from Cinclus cinclus (Linnaeus, 1758). These species are like “type species”, characterising three groups of morphotypes. Redescriptions are made from the type material. Lectotype and paralectotypes are designated for M. aegithali. We increase knowledge of the intraspecific morphological variability of these species, including phylogenetically informative characteristics, and a new host association for M. aegithali from Aegithalos concinnus.

Catostomus murivallis, a new species of sucker (Cypriniformes: Catostomidae) from Wall Canyon Creek, Surprise Valley, in Northwestern Nevada, U.S.A.

PHILLIP M. HARRIS, DOUGLAS F. MARKLE, MATTHEW A. CAMPBELL — Fri, 27 Jun 2025 00:00:00 +1200

Since 1934 when it was originally collected by C. L. Hubbs and R. R. Miller, a Catostomus from Wall Canyon Creek has been considered a putative species. Occurring in a limited range in Surprise Valley, Washoe Co., Nevada, USA, this undescribed Wall Canyon Sucker exhibits an overall similarity to other Catostomus species that are naturally distributed in close geographic proximity. Molecular phylogenetic and population genetic studies have included the Wall Canyon Sucker and refined its relationships such that it is the sister taxon of the Warner Sucker Ca. warnerensis endemic to the Warner Basin of Oregon and closely related to the Owens Sucker Ca. fumeiventris of the Owens Valley in California. All three lineages occupy drainages just east of the Cascade Range and the Sierra Nevada mountains in western North America. Multiple genetic data sources support the separation of the Wall Canyon Sucker from Ca. murivallis and Ca. warnerensis with at least a Pleistocene division without recent gene flow. Here, we formally describe Catostomus murivallis sp. nov. from Wall Canyon Creek in Surprise Valley. Catostomus murivallis is statistically significantly different from Ca. fumeiventris and Ca. warnerensis at 16 of 34 and 17 of 34 morphometric characters investigated. Three of four and two of four meristic characters respectively were found to be significant different as well between Ca. murivallis and the two valid and closely related Catostomus species.

**First records of the genus Acerocnema Becker (Diptera: Scathophagidae) from South Korea, with a new species and a newly recorded species using DNA barcodes**

SANGJIN HAN, SEUNGGWAN SHIN — Fri, 27 Jun 2025 00:00:00 +1200

This study reports the first Korean records of the genus Acerocnema Becker, 1894, with one new species, Acerocnema saurischia sp. nov., and one newly recorded species, A. flavifrons Iwasa. A key to the Korean Acerocnema is provided with morphological diagnosis and images of habitus and male genitalia structures. To assist in species identification, mitochondrial cytochrome c oxidase subunit I (COI) gene sequences were obtained from all specimens to assess DNA barcoding.