Morphological and DNA sequence data uncover a new millipede species in the <i>Thyropygus opinatus</i> subgroup and assign <i>T. peninsularis</i> to this subgroup (Diplopoda: Spirostreptida: Harpagophoridae).

ABSTRACT: The millipede genus Thyropygus Pocock, 1894 is one of the most diverse genera within the family Harpagophoridae in Southeast Asia. The Thyropygus opinatus subgroup, belonging to the T. allevatus group, is distinguished by the presence of an additional projection on the anterior coxal fold. Here, we describe a new species of the T. opinatus subgroup, Thyropygus payamense sp. nov., from Payam Island, Ranong Province, Thailand, based on morphological and DNA sequence data. The mean interspecific COI divergence between the new species and other Thyropygus species is 0.13 ± 0.02 (range: 0.07-0.16). The new species is distinguished by (1) a small, slender, pointed spine at base of femoral spine, (2) a short, triangular mesal process of the anterior coxal

SUBMITTER: Pimvichai P 

PROVIDER: S-EPMC12147765 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature