Five New Species and a New Subgenus of the Mite Genus Premicrodispus (Acari, Heterostigmata, Microdispidae)from Turkmenistan

摘要

A new monotypic subgenus, Premicrodispulus subgen. n., with the type species Premicrodispus reduc-lus sp. n., and four new species of the nominative subgenus of the mite genus Premicrodispus, P. (Premicrodispus) paradoxus sp. n., P. (P.) heterocaudatus sp. n., P. (P.) obtusisetosus sp. n., and P. (P.) incisus sp. n., collected in soils of Turkmenistan are described. The subgenus Premicrodispulus subgen. n. differs from the nominative subgenus in the presence of 3 setae on genu I (seta l" absent) and1 seta on genu II (setae d and l" absent). Premicrodispus (Premicrodispus) paradoxus sp. n. differs from all the species of the genus in the presence of soleni-dion on tarsus III. P. (P.) heterocaudatus sp. n. is most similar to P. longisetosus (Mahunka,1970), but differs in the setaepsj, distinctly longer than ps (in P. longisetosus, ps_3 and ps_x are similar in length). P. (P.) obtusisetosus sp. n. is most similar to P. montanus Khaustov, 2006, but differs in obtuse setae C, e, and/(in P. montanus,these setae are pointed); P. (P.) incisus sp. n. is most closely related to P. longisetosus (Mahunka, 1970), but differs in the presence of distinct excavations on the posterior margin of tergites C and D (in P. longisetosus, excavations are absent).