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Issue: Vol. 5263 No. 3: 6 Apr. 2023
Type: Article
Published: 2023-04-06
DOI: 10.11646/zootaxa.5263.3.6
Page range: 411-429
Abstract views: 317
PDF downloaded: 24

Integrative redescription of the sucking millipede genus Dawydoffia Attems, 1953, with a description of a new species and a transfer to the family Hirudisomatidae (Diplopoda, Polyzoniida)

Leibniz Institute for the Study of Biodiversity Change; Zoogisches Forschungsmuseum Alexander Koenig; Adenauerallee 127; 53113 Bonn; Germany
University of Bonn; Institute for Evolutionary Biology and Ecology; An der Immenburg 1; 53121 Bonn; Germany
Natural History Museum Vienna; Burgring 7; 1010 Vienna; Austria
Myriapoda barcoding biodiversity Colobognatha Laos SE Asia taxonomy

Abstract

The type species of the monotypic Polyzoniida genus Dawydoffia Attems, 1953, D. kalonota Attems, 1953 from Vietnam, is redescribed based on type material. A second species of the genus, D. siphonocryptida n. sp., is described from Laos based on scanning electron microscopy, micro-computed tomography and molecular barcoding. The species of Dawydoffia are among the shortest and widest of the Polyzoniida, and resemble in habitus those of the Siphonocryptida genus Siphonocryptus Pocock, 1894, both having pleurites that are completely fused to the tergites. Dawydoffia was previously placed in the family Siphonotidae Cook, 1895, but can be identified as a member of the Holarctic Hirudisomatidae Silvestri, 1896 based on the following morphological characters: the uplifted posterior margins of the tergites, the collum covering part of the head, the position of the male gonapophysis or pseudopenis, the retracted telson, and the ozopores situated close to the tergal margin. However, both Dawydoffia species have a slender paronychium, a character previously known only from the Siphonotidae, but also documented here for Hirudisoma roseum (Victor, 1839). A slight redefinition of the Polyzoniida families is provided. The two Dawydoffia species differ in their coloration, as well as in their somatic and gonopodal characters.

 

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