Collembola Poduromorpha (Entognatha) from continental Yemen and Socotra Island, with the description of a newXenyllaTullberg, 1869

Abstract

Yemen were studied. A new species, Xenylla vanharteni n. sp., is described with the combination of following characters: 5 + 5 eyes present, mucro separated from dens and chaetotaxy of "bgklort" type. Remarks to the original description of Penelopella pohli (Barra, 2006) n. comb. is presented. New localities for seven further species are given.

Collembola fauna of the South Shetland Islands revisited

“…Weiner & Najt (1994) described a new species, Tillieria penai, from King George Island but did not state how it differed from T. mixta or even mention this species. The genus Tillieria Weiner & Najt, 1991, is closely related to Tullbergia Lubbock and was erected for two species from New Caledonia. It was originally characterized by the possession of a small, simple, apical bulb on antenna IV, small anal spines on abdomen VI and pseudocelli of type I (Weiner & Najt 1991) with 8-10 branches and a border of 4-6 rows of compact, primary cuticular granules as well as on its pseudocellar formula.…”

“…The short spine laterally on the thorax, originally noted by Wise for this group, is not a group specific character. Although Greenslade (1995) noted that T. mixta from Livingston Island did conform to Weiner & Najt's (1991) diagnosis for Tillieria, she did not reassign the species at that time to that genus as it was doubtful that the genus had validity based on a morphological phylogeny (Greenslade & Rusek 1996). Greenslade (1995) further noted that it was not clear whether species assigned to Tillieria represented a genus, subgenus or species group within Tullbergia and that the decision as to its status must await further morphological as well as molecular analyses.…”

“…Differentiating characters for the genera Tullbergia and Tillieria according toWeiner & Najt (1991) with comments.…”