Zootaxa

Ant type specimens (Hymenoptera, Formicidae) in the collection of Volodymyr Opanasovych Karawajew. Communication 4 (concluding). Myrmicinae

ALEXANDER G. RADCHENKO — 2026-03-30

The article is the fourth (and final) in a series of catalogues of ant type specimens from the collection of V. O. Karawajew (1864–1939), stored at the I.I. Schmalhausen Institute of Zoology of the National Academy of Sciences of Ukraine (SIZK, Kiev). This work includes data on 1530 type specimens (17 holotypes, one lecotype, 191 paralectotypes, one neotype and 1320 syntypes) from 220 taxa of the subfamily Myrmicinae, collected from around the world and described by Karawajew and other myrmecologists, which are currently assigned to 31 genera (Acromyrmex, Aphaenogaster, Apterostigma, Bondroitia, Cardiocondyla, Carebara, Cephalotes, Chelaner, Crematogaster, Goniomma, Lophomyrmex, Meranoplus, Messor, Monomorium, Mycocepurus, Myrmecina, Myrmica, Myrmicaria, Ocymyrmex, Oxyopomyrmex, Pogonomyrmex, Pheidole, Podomyrma, Pristomyrmex, Solenopsis, Stenamma, Strongylognathus, Strumigenys, Temnothorax, Tetramorium and Trichomyrmex).

**Review of the subgenus Steneotarsonemus (Steneotarsonemoides) (Acari: Heterostigmata: Tarsonemidae) of Russia**

ALEXANDER A. KHAUSTOV — 2026-03-30

The subgenus Steneotarsonemus (Steneotarsonemoides) Mitrofanov & Sharonov of Russia is reviewed. Females of Steneotarsonemus (Steneotarsonemoides) azureus Mitrofanov & Sharonov, S. (S.) cerinus Mitrofanov & Sharonov, and S. (S.) porrectus Livshits et al. are redescribed based on type materials. The female, male and larva of S. (S.) rugosus sp. nov., collected from Calamagrostis arundinacea (Poaceae) in Western Siberia, and female of S. (S.) fuscus sp. nov., collected from Spodiopogon sibiricus (Poaceae) in Primorski Krai, Russia, are described. A key to species of the subgenus Steneotarsonemus (Steneotarsonemoides) is provided. Two species, namely, S. amlisoae Karmakar et al., 2021 and S. indianensis Karmakar & Mondal, 2021, previously described in the subgenus Steneotarsonemoides, moved to the nominative subgenus Steneotarsonemus s. str.

**Ten new species and thirteen new country records for the Neotrichia canixa species group (Trichoptera: Hydroptilidae) in Costa Rica**

STEVEN C. HARRIS — 2026-03-30

Formerly, only one species of Neotrichia, N. esmalda (Mosely), was recorded from Costa Rica. In this publication, we add 10 new species (N. alajuela sp. nov., N. cerberusi sp. nov., N. chaconorum sp. nov., N. doshocica sp. nov., N. gancho sp. nov., N. monika sp. nov., N. munozi sp. nov., N. paragancho sp. nov., N. pejensis sp. nov., N. trescuerna sp. nov.) and 13 new country records, all belonging to the Neotrichia canixa species group, to Costa Rica’s fauna. We also discuss and acknowledge transfer of all the former Neotropical members of the Neotrichia esmalda species group to the Neotrichia canixa species group. There are now 24 species of Neotrichia known from Costa Rica, all of which are in the same species group.

Diogenes kakeroma, a new species of hermit crab (Decapoda: Anomura: Diogenidae) from Amami Islands, Ryukyu Islands, southern Japan

TADANOSUKE NAGASAKA — 2026-03-30

A new species of the diogenid hermit crab genus Diogenes Dana, 1851, D. kakeroma, is described and illustrated based on material from shallow subtidal waters (2–4 m deep) in Amami Islands, Ryukyu Islands, southern Japan. This new species is morphologically similar to D. holthuisi Asakura & Tachikawa, 2010 and D. minimus Komai & Yoshida, 2020, both known from Japanese waters, but is notable for its unarmed antennal acicles, a trait that appears to be unique within the genus. The status of the new species is further validated by phylogenetic analyses using mitochondrial 16S rRNA and COI genes.

**The identity of Coronella violacea Cantor, 1839, a senior synonym of Oligodon kheriensis Acharji & Ray, 1936 (Squamata: Colubridae)**

JUSTIN L. LEE — 2026-03-30

Theodore Cantor described Coronella violacea in 1839 for a colubrid snake collected from “Rungpore” (now Rangpur, Bangladesh). It was applied to several species in the genus Oligodon until Smith (1940) treated the name as a junior synonym of Oligodon cyclurus (Cantor, 1839). Evidence from the unpublished notes and watercolor drawings of Cantor indicate Coronella violacea is not a synonym of O. cyclurus, but is conspecific with Oligodon kheriensis Acharji & Ray, 1936. The collector of the holotype of Coronella violacea is identified as Honoratus Bonnevie, a Norwegian-born merchant and indigo plantation owner who lived in Rangpur during Cantor’s residency in British India. Precedence cannot be reversed in favor of O. kheriensis, so the older name is resurrected as Oligodon violaceus stat. reinstat., with O. kheriensis relegated as a junior synonym. Since the holotype of Coronella violacea is considered lost, the holotype of Oligodon kheriensis is designated as the neotype, an act that objectively links the two nomina with one another.

**Two new species of Cerogamasus Jin & Yao, 2024 (Acari, Parasitiformes, Parasitidae) from China**

MAO-YUAN YAO — 2026-03-30

During a survey of Chinese Parasitidae, two new species, Cerogamasus cornutus Ren & Yao sp. nov. and Cerogamasus crassipilosus Ren & Yao sp. nov., were discovered and described. A new key to females of the known species of the genus is presented.

New taxa of the tribe Apomecynini (Coleoptera: Cerambycidae: Lamiinae) from Mexico

FELIPE ARTURO NOGUERA — 2026-03-30

Four new taxa of the tribe Apomecynini are described from Mexico: Apomystirio gen. nov. and Apomystirio hispidum sp. nov. from the state of Chiapas; Adetaptera ignota sp. nov. from the state of Chiapas; and Adetus lunaris sp. nov. from the state of Jalisco.

**A new species of the genus Amoebotricha Warren, 1901 (Lepidoptera: Geometridae: Larentiinae) from China**

JIANQIU KANG — 2026-03-30

A new species of the genus Amoebotricha Warren, 1901 (Lepidoptera: Geometridae: Larentiinae), Amoebotricha albiapicalis sp. nov., is described from Zhejiang Prov., China. The male and female adults, genitalia, habitat, and distribution are illustrated. The new species is compared with A. hiemalis Inoue, 1989 and A. grataria (Leech, 1891).

**Almost a century later, the description of the second species of Hebardinella Chopard, 1932 (Orthoptera: Trigonidiidae), and the first record of the genus in Brazil**

LUIZ AUGUSTO PADILHA SANTOS — 2026-03-30

Hebardinella Chopard, 1932 is a genus of trigonidiine crickets with a single species, Hebardinella americana (Chopard, 1912), recorded only in French Guiana. They are small and green crickets that lack a stridulatory apparatus on the male tegmina (forewings). They are also characterized by a very short and expanded terminal segment of the maxillary palps and a very wide tympanal opening, which is present only on the inner face of the fore tibia. Here, we describe a new species for the genus, Hebardinella pilimaculata sp. nov., representing the first record of the genus in Brazil.

**A new species of the genus Borogonalia (Hemiptera: Cicadellidae: Cicadellinae) from Colombia and color pattern variations in B. impressifrons (Signoret, 1854)**

ANDRES FELIPE SILVA-CASTAÑO — 2026-03-30

One new species of the subfamily Cicadellinae (Hemiptera: Cicadellidae), Borogonalia wilsoni Dietrich & Silva-Castaño sp. nov. from Colombia is described. Also, color pattern variations found in Borogonalia impressifrons (Signoret, 1854) were analyzed. The new Colombian species is clearly distinguished from other Borogonalia species by the relatively pointed head and indistinct transverse concavity anterad of the ocelli.

**What is Botys aurithoracalis Christoph, 1885? (Lepidoptera, Crambidae)**

SERGEY F. MELYAKH — 2026-03-30