Propolyxenus Silvestri, 1948

Short, Megan, Vahtera, Varpu, Wesener, Thomas & Golovatch, Sergei I., 2020, The millipede family Polyxenidae (Diplopoda, Polyxenida) in the faunas of the Crimean Peninsula and Caucasus, with notes on other European Polyxenidae, Zootaxa 4772 (2), pp. 306-332 : 313

Genus Propolyxenus Silvestri, 1948

Type species: Propolyxenus aegeus Silvestri, 1948

Other taxa included: refer to Short & Huynh (2010) for the most recent revision.

Propolyxenus aegeus Silvestri, 1948

Propolyxenus argentifer Verhoeff, 1921 comb. n.

Propolyxenus lawrencei Condé, 1949

Propolyxenus forsteri Condé, 1951

Propolyxenus patagonicus ( Silvestri, 1903)

Propolyxenus trivittatus (Verhoeff, 1941) synonymized here under P. argentifer

Propolyxenus australis Short and Huynh, 2010

Propolyxenus squamatus Nguyen Duy-Jacquemin, Uys and Geoffroy, 2011

Propolyxenus crassisetosus Marquet & Condé, 1950 (probably not a Propolyxenus )

Genus diagnosis: The genus is typical of the subfamily Polyxeninae , due to the structure of the telson with a fan of dorso-medial trichomes and a caudal bundle with two distinct halves, having a wide medial gap. Five or six ommatidia on each eye plate. Tergites with trichomes arranged in rosettes laterally, with three or more transverse rows along posterior edge, distinguishing it from Polyxenus with just two transverse rows. The number and arrangement of sensilla on the 6 th antennal article also differs from Polyxenus with no more than three thin basiconic sensilla all anterior to two thick basiconic sensilla.

Distribution: Greece, Croatia, Romania, Crimea, Russia, Georgia, Azerbaijan, Armenia, Turkey, Iran, Israel, South Africa, Australia, New Zealand, Argentina.

Remarks: Condé (1951), and Short and Huynh (2010) recommended that P. crassisetosus be removed from the genus as it lacked a number of diagnostic characters for the genus including a fan of medial trichomes dorsal to the caudal bundle. The few characters described for this species indicated that it probably belongs in the family Polyxenidae , subfamily Monographinae .