Zootaxa

**A new species of the genus Dibamus Duméril & Bibron, 1839 (Squamata: Dibamidae) from the driest and hottest place of Vietnam**

2023-12-01T12:12:32+13:00

A new species of the genus Dibamus Duméril & Bibron, 1839 is described based on seven specimens collected from Nui Chua National Park, Ninh Thuan Province, southern Vietnam, the hottest and driest place of the country. Dibamus tropcentr sp. nov. is superficially similar to Dibamus smithi Greer, 1985, but can be distinguished from the latter by: the presence of a rudimentary labial suture; by larger number of subcaudal scales; by comparatively longer tail; by generally larger number of midbody scale rows; by having the interparietal scale not enlarged, subequal to the nuchal scale; by having frontal and frontonasal scales subequal in size as compared to almost twice larger frontal scale in D. smithi; by having three scales posterior to interparietal; by having the medial scale posterior to mental not enlarged; by having three to four scales on the posteromedial edge of infralabials; and by having supralabial scale larger than ocular scale. We suggest the new species should be considered as Vulnerable (VU) following the IUCN’s Red List categories. The new species occurs in dry maritime mixed low evergreen forests at elevations of 200–280 m a.s.l. and was recorded in association with termite species Globitermes sulphureus (Haviland). Our study brings the total number of species of the genus Dibamus to 25; this is the seventh species of the genus recorded from Vietnam.

**Review of Nasuconia Sakakibara, 2006 (Hemiptera: Membracidae) with description of three new species**

2023-12-01T12:12:22+13:00

The treehopper genus Nasuconia Sakakibara, 2006 previously included four species and was recorded only from Brazil. Here we provide a revised diagnosis of the genus and describe three new species: Nasuconia ellenfutterae sp. nov. from Ecuador, Nasuconia guianensis sp. nov. from French Guiana and Nasuconia yasuni sp. nov. from Ecuador. The genus can be distinguished by the following combination of characters: frontoclypeus conical with transverse grooves, obliquely projected forward at least 1/3 of its length beyond suprantennal margin; pronotum navicular, low, punctate, with longitudinal elevated lines or nodes; first valvulae with ventral interlocking device distinctively sinuate. Two informal species groups are recognized based on characters of the head, forewing and leg chaetotaxy. A key to species, photographs, updated morphological descriptions, and the first descriptions of the female and male genitalia of Nasuconia species are provided. Comparisons of cucullate setae and fine abdominal integument structures are also made using scanning electron microscopy.

Stempellinella Brundin, 1947 (Diptera: Chironomidae) from Eastern Siberia and the Russian Far East, with the description of new species

2023-12-01T12:12:20+13:00

Two new species of the genus Stempellinella Brundin, 1947, S. bazovae sp. nov. and S. chirka sp. nov., from Eastern Siberia and the Russian Far East are described. Illustrated redescriptions of males for further three species, S. coronata Inoue, Kawai et Imabayashi, 2004, S. edwardsi Spies et Saether, 2004, S. tamaseptima (Sasa, 1980) are given. Stempellinella ministylus Ree, 2015 is a new synonym Stempellinella coronata Inoue, Kawai et Imabayashi, 2004. Key to the males and pupae of the Russian Far East and Eastern Siberia Stempellinella species is provided.

Redescription of Hybusa occidentalis (Westwood) (Orthoptera: Proscopiidae: Hybusinae): new images, description of male genitalia, pictorial key of Hybusa species and morphological comparison of Hybusinae with Xeniinae and Proscopiinae

2023-12-01T12:12:17+13:00

Proscopiidae (Orthoptera: Caelifera) are grasshoppers found in Central and South America, often mistaken for “true” stick insects (Phasmatodea) due to their stick-like appearance. The family comprises three subfamilies: Hybusinae, Proscopiinae, and Xeniinae, with Hybusinae as the smallest subfamily, housing the genus Hybusa Erichson, which contains four species endemic to Chile. Considering that the most recent comprehensive taxonomic assessment of this genus was conducted approximately three decades ago, herein we redescribe the type species of Hybusa, H. occidentalis (Westwood), based on males and females. The study includes new images of H. occidentalis body and male genitalia, along with a comprehensive pictorial key for all Hybusa species using available type material. Additionally, a morphological comparison between Hybusa and other Proscopiidae taxa is presented.

Malakichthys formosus, a new species of small seabass (Acropomatiformes: Malakichthyidae) from southwestern Taiwan

2023-12-01T12:12:14+13:00

A new species of Malakichthys is described based on six specimens collected from deepwaters off southwestern Taiwan, northwestern Pacific Ocean. The new species, M. formosus sp. nov., exhibits distinct morphological characters, primarily characterized by the absence of chin spines, distinguishing it from other congeners with the exception of M. levis and M. mochizuki. It differs from the two species by having more lateral-line scales, a shorter distance between the snout and dorsal-fin origin, a shallower head, fewer scale rows below the lateral line, and the structure of the first anal-fin pterygiophore. Eight species are now recognized in Malakichthys.

**One new species of the genus Phlugiolopsis (Orthoptera: Tettigoniidae: Meconematinae) from Guizhou Province, China**

2023-12-01T12:12:11+13:00

Phlugiolopsis was proposed by Zeuner in 1940 with Phlugiolopsis henryi Zeuner, 1940. Chinese scholars Xia & Liu first studied the genus in 1993 and described three new species from Wuling Mountains Area of Southwestern China, among which Phlugiolopsis brevis Xia & Liu, 1993 and Phlugiolopsis tuberculata Xia & Li, 1993 were mainly distributed in Guizhou Province. Twenty years later, Bian et al. (2013) described the third species of Phlugiolopsis from Guizhou, namely Phlugiolopsis xinanensis Bian, Shi & Chang, 2013. Compared with Yunnan Province, the classification of Phlugiolopsis in Guizhou is far from sufficient. Herein based on new specimens deposited in Guangxi Normal University, we describe one new species from Guizhou, China.

**A new subspecies of Purpuricenus temminckii Guérin-Méneville, 1844 (Coleoptera, Cerambycidae) from China**

2023-12-01T12:12:09+13:00

**The tadpole of Hylodes amnicola Pombal, Feio & Haddad 2002 (Anura: Hylodidae): External morphology and buccopharyngeal anatomy**

2023-12-01T12:12:06+13:00