Zootaxa

**On the Neotropical spider genus Otoniela Brescovit, 1997 (Araneae: Anyphaenidae, Anyphaeninae), with the description of six new species**

LUIZ FERNANDO M. OLIVEIRA — 2023-12-08

The genus Otoniela Brescovit, 1997 includes two species, the type species Otoniela adisi Brescovit, 1997, distributed in Peru and Brazil and O. quadrivittata (Simon, 1897), recorded in Venezuela and Argentina. Analyzing 127 individuals permited to expand the records of Otoniela adisi and to describe six additional species: O. lupercioi sp. nov. (♂♀), from Brazil, Argentina and Paraguay; O. chica sp. nov. (♂♀), O. duovizinhense sp. nov. (♂♀), and O. tigre sp. nov. (♂♀), from Brazil and Argentina; and O. aparecida n. sp (♀) and O. negrinho sp. nov. (♂♀), known only from Brazil. As a result, a new emended diagnosis of the genus is presented. Additionally, complementary morphological data of Otoniela adisi are documented.

Three new species of temporary fish parasite, Gnathiid Isopods (Crustacea: Isopoda: Cymothoida) from Kuwait

VALIALLAH KHALAJI-PIRBALOUTY — 2023-12-08

Gnathiid isopods (Crustacea) were collected between 2014 and 2022 from various sites in shallow waters of the Kuwait coasts. Three new species of gnathiids are described: Caecognathia alsalmiyah sp. nov. is characterised by the well-extended, distally pointed with three cusps supraocular lobe and the presence of pylopod with four articles; Elaphognathia alshumaimah sp. nov. is distinguished from its congeners by having an elongated, distally curved mandible, with a single pronounced conical internal lobe; Gnathia kuwaitensis sp. nov. is easily distinguished from the other species of the genus Gnathia by the conical mediofrontal process, which is slightly sunken and having pronounced superior frontolateral process, with median notch distally.

**Review of the genus Echinax Deeleman-Reinhold, 2001 from China (Araneae: Corinnidae)**

LU ZHANG — 2023-12-08

The spider genus Echinax Deeleman-Reinhold, 2001 is reviewed in China. Two new species, E. breviducta sp. nov. (♂♀) and E. wuzhishan sp. nov. (♀), are described and illustrated. The female of E. baisha Lu & Li, 2023 is reported for the first time, and three known species, E. anlongensis Yang, Song & Zhu, 2004, E. oxyopoides (Deeleman-Reinhold, 1995) and E. panache Deeleman-Reinhold, 2001, are illustrated.

New Limaiinae (Neuroptera: Chrysopidae) from the early Eocene Fur Formation, Denmark, including an unexpected finding of a Mesozoic genus

VLADIMIR N. MAKARKIN — 2023-12-08

Two species of Limaiinae (Chrysopidae) are described from the early Eocene Fur Formation of Denmark: Mesypochrysa nielseni sp. nov. and Limaiinae gen. et sp. A. All forewing character states of M. nielseni sp. nov. are similar to those of the widely distributed Mesozoic genus Mesypochrysa Martynov, 1927, which was formerly known from the Middle Jurassic to mid-Cretaceous. Limaiinae gen. et sp. A is represented by an incomplete forewing. Although it differs from other species known from the formation, we refrained to name it pending a more complete specimen. The relatively high diversity of Limaiinae in the early Eocene of Denmark, with at least by two genera and four or five species is surprising. This diversity in the Fur Formation is nearly equal to that of Nothochrysinae.

**Rediscovery of the Canary Islands endemic Aphaenogaster hesperia Santschi, 1911 (Hymenoptera, Formicidae, Myrmicinae)**

ANTONIO J. PÉREZ-DELGADO — 2023-12-08

The Canary Islands endemic species Aphaenogaster hesperia Santschi, 1911 was described based solely on two workers captured in a north-western coastal area of Tenerife (Canary Islands) in 1902 and 1903. The species has not been recorded in the last 100 years and only information on its type locality is known. This species, belonging to the crocea group, has been recently rediscovered in a new site within a pine forest at 950 m a.s.l. The new area is a very different habitat, revealing a lack of ecological knowledge of the species, which may have caused the species to have remained unnoticed for more than 100 years. Novel distributional and morphological data are provided.

Glyptothorax heokheei, a new species of catfish (Teleostei: Sisoridae) from the Brahmaputra River drainage, Arunachal Pradesh, Northeast India

PRATIMA SINGH — 2023-12-08

Glyptothorax heokheei, a new species of sisorid catfish is described from the Brahmaputra River drainage in India. It can be distinguished from all congeners, except G. dikrongensis, G. indicus, G. rugimentum and G. obliquimaculatus, in having the unculiferous striae of thoracic adhesive apparatus extending anteriorly onto gular region. Glyptothorax heokheei is distinguished from G. dikrongensis and G. obliquimaculatus in having a slender body at the anus, more serrations on posterior margin of pectoral-fin spine, greater number of branched anal fin rays, and the extremity of dorsoposterior margin of adipose fin uniformly convex (vs. sharply angular). It differs from G. rugimentum in having a chevron-shaped (vs. rhomboidal) thoracic adhesive apparatus, more serrations on posterior margin of pectoral-fin spine, and lacking vertical bars on body. Glyptothorax heokheei differs from G. indicus in having a shorter post-adipose distance, smaller interorbital width, more serrations on posterior margin of pectoral-fin spine and nasal barbel not reaching (vs. reaching) anterior margin of eye. Glyptothorax heokheei is the fifth species of the genus possessing unculiferous ridges of thoracic adhesive apparatus extending anteriorly onto the gular region.

**The more, the merrier: a new colonial species of the orb weaving spider genus Leucauge White, 1841 (Araneae: Tetragnathidae) from the Amazon rainforest**

LEONARDO FERREIRA-SOUSA — 2023-12-08

A new Leucauge species, widespread in the Amazon rainforest, is described and illustrated. Leucauge behemoth n. sp. lives in colonies, usually positioned above turbulent waters. Both males and females have a unique color pattern, especially on the abdomen, which makes this species easily identifiable. Males are distinguished from most congeners by the long hook of the cymbium and from their closest relatives by the lack of a cymbial dorsobasal process. Females of this species differ from their congeners by the presence of a rounded ventral process in the epigynum. Leucauge argyroaffins Soares & Camargo, 1948 is proposed as a junior synonym of Leucauge argyra (Walckenaer, 1841).

**Remarks on the subgenus Xizicus (Paraxizicus) (Orthoptera: Tettigoniidae: Meconematinae) with description of one new species from China**

MENG AN — 2023-12-08