First description of the nymph and larva of Dermacentor raskemensis (Acari: Ixodidae), parasites of pikas and other small mammals in Central Asia.

摘要: Dermacentor raskemensis Pomerantzev, 1946 is one of the rare Asian species in this genus. The immature stages have never been described. Reexamination D. holdings stored United States National Tick Collection revealed a collection lot containing reared nymphs and larvae species. This made it possible for us to find numerous among previously unidentified material collected field. Both are described here first time. Nymphs can be distinguished from those other region by small spiracular plate, relatively short obtuse lateral projections basis capituli dorsally, spurs on coxa I internal spur characteristically very broadly rounded at its apex, IV, whereas capituli, ≈6 denticles median files hypostome, short, broad, I. studied originate Afghanistan, India, Iran, Pakistan, where they were pikas mammals.