Review of the millipede genus Orthomorpha Bollman, 1893 (Diplopoda, Polydesmida, Paradoxosomatidae) in Cambodia, with new records and descriptions of three new species

By

Likhitrakarn, Natdanai
Golovatch, Sergei
Thi, Sothearen
Chhin, Sophea
Lou, Vanny
Sinovas, Pablo
Jeratthitikul, Ekgachai
Pholyotha, Arthit
Siriwut, Warut
Srisonchai, Ruttapon
Somsak Panhā‏
Čhirasak Sutčharit

Type

Article

Date of Publication

2025-9-10

Original Publication

ZooKeys

Volume

1251

Pages

251--274

Subjects

Asiomorpha , catalogue , Distribution , key , Morphology , Orthomorphini , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1251.158776

 

Abstract

The Southeast Asian millipede genus Orthomorpha Bollman, 1893 currently encompasses 59 accepted species, including three newly described from Cambodia: Orthomorpha tergoaurantia Likhitrakarn, sp. nov., Orthomorpha efefai Likhitrakarn, sp. nov., and Orthomorpha battambangiensis Likhitrakarn, sp. nov. The new species are described based on distinctive morphological traits, with particular emphasis on gonopodal features. Species descriptions are accompanied by detailed illustrations and scanning electron micrographs (SEM) of the gonopods. An updated identification key to the known Orthomorpha species from Cambodia is also provided.