Abstract
A cladistic analysis of the genus Atlantodesmus Hoffman, 2000 is presented. With a total of 11 taxa and 30 morphological characters, and under implied weighting (k = 3), two equally most parsimonious trees (length = 58 steps; total fit = 23.150; CI = 0.64; RI = 0.64) recovered the monophyly of the genus. The resulting synapomorphies are: absence of a ventral projection on the post-gonopodal sternites; presence of folds on the dorsal edge of the prefemoral region of the gonopod; and one homoplastic transformation: presence of a cingulum. In addition, Atlantodesmus sierwaldae sp. nov. is described from the state of Minas Gerais, in the Brazilian Cerrado, and a key to the males of the genus is provided.
Highlights
The Chelodesmidae Cook, 1895 is the second largest family in the class Diplopoda de Blainville, 1844, with almost 800 described species (Hoffman 1980)
The family is divided into two subfamilies: Chelodesminae Cook, 1895, composed of 19 tribes distributed in the Neotropical region, and Prepodesminae Cook, 1896, with only one tribe from Africa and disjuncts records from Spain
In the Chelodesminae, the genus Atlantodesmus Hoffman, 2000 contains species widely distributed in the Atlantic forest of Brazil (Hoffman 2000; Bouzan et al 2017)
Summary
The Chelodesmidae Cook, 1895 is the second largest family in the class Diplopoda de Blainville, 1844, with almost 800 described species (Hoffman 1980). The family is divided into two subfamilies: Chelodesminae Cook, 1895, composed of 19 tribes distributed in the Neotropical region, and Prepodesminae Cook, 1896, with only one tribe from Africa and disjuncts records from Spain (Hoffman 1980). In the Chelodesminae, the genus Atlantodesmus Hoffman, 2000 contains species widely distributed in the Atlantic forest of Brazil (Hoffman 2000; Bouzan et al 2017). 1943 in the tribe Arthrosolaenomeridini Hoffman, 1976, due to the presence of a cingulum on the gonopod and a supposedly similar geographic distribution. Atlantodesmus was revised and considered as a senior synonym of Iemanja Hoffman, 2000 (Bouzan et al 2017), and is currently composed of the species A. eimeri (Attems, 1898), A. itapurensis (Schubart, 1943), A. pickeli (Schubart, 1946), A. pintoi (Schubart, 1946) and A. teresa (Hoffman, 2000).
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