Sunday, December 24, 2023

[Diplopoda • 2023] Monographis panhai & Unixenus thailandicus • First Records of penicillate Millipedes (Polyxenidae) from Thailand, with Descriptions of Two New Species


 Monographis panhai & Unixenus thailandicus 
 Huynh, Veenstra & Likhitrakarn, 2023


Abstract
Two new species are described from the family Polyxenidae. Monographis panhai sp. nov. and Unixenus thailandicus sp. nov. represent the first records of their respective genera in Thailand. Monographis panhai sp. nov. shows distinct morphological differences in the arrangement of sensilla in the antennomere VI, as well as in the structures of the labrum and the claw. Collections from different areas of Thailand showed that not only is it widespread but also exhibits geographic variation in morphology. Unixenus thailandicus sp. nov. exhibits sexual dimorphism in the number of conical sensilla on the lateral palp, with 24 in males and 22 in females, differing from the typical count of 13 within the genus.

Keywords: Myriapoda, Penicillata, Polyxenidae, Monographis, Unixenus, phylogeny



Monographis panhai sp. nov. 
กิ้งกือขนปัญหา 
ค้นพบที่ อ.ปางมะผ้า จ.แม่ฮ่องสอน อ.วังน้ำเขียว จ.นครราชสีมา และ อ.เมือง จ.กระบี่



Unixenus thailandicus sp. nov. 
กิ้งกือขนประเทศไทย 
ค้นพบที่ อ.บ่อทอง จ.ชลบุรี 

 
Cuong Huynh, Anneke A. Veenstra and Natdanai Likhitrakarn. 2023. First Records of penicillate Millipedes (Diplopoda, Polyxenidae) from Thailand, with Descriptions of Two New Species.  Zootaxa. 5383(4); 514-536. DOI: 10.11646/zootaxa.5383.4.5