New Genus of Walchiinae (Acarina, Trombiculidae).

摘要

Diagnosis-This genus differs from the other genera of this subfamily in that only three scutal setae are present, the posterolateral setae being off the scutum. It perhaps is most closely related to Waichia; however, Waichia lacks the anteromedian seta. Superficially, this genus resembles the Schongastia- type larvae of the Trombiculinae. It may be confused with Ascoschbngastia because the femora of legs II and III may appear divided in some specimens. Description-Three scutal setae, posterolateral setae not on scutum. Sen- sillae subglobose to globose, globular distal half clothed with triangle scale- like barbs. Distal segments of chelicera blade-like, as in Walchia. Palpal claw with middle prong ventral and longest, lateral prongs approximately equal in size. Eyes equally well developed, or posterior eyes poorly developed. Scutum approximately as wide as long; posterolateral margins arcuate; lateral margins nearly straight or emarginate; anterior margin nearly straight or sinuate; surface profoundly sculptured. Empodium claw-like.