O. Merkl szerk.: Folia Entomologica Hungarica 68. (Budapest, 2007)

FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK Volume 68 2007 pp. 181-194. Localisation of Neotrombicula sympatrica (Acariformes: Trombiculidae) on small rodents of Kyrgyzstan A. V. KHARADOV 1 & P. A. CHIROV 2 1 Department of Arthropod Zoology, Institute for Biology and Pedology, National Academy of Sciences, 265 Chui Avenue, 720071 Bishkek, Kyrgyzstan. E-mail: alex-kh53@mail.ru, a-khar53@netmail.kg 2 Saratov State University, 83 Astrakhanskaya Street, 410026 Saratov, Russia. E-mail:chirov@sgu.ru Abstract - Neotrombicula sympatrica STEKOLNIKOV, 2001 was collected in three areas of Kyrgyzstan from 64 individuals belonging to 8 species of rodents. In total, 2662 larvae were col­lected, of which 1629 (61.19%) were stuck to the skin, the rest was obtained by combing. A7. sympatrica infested 9 areas of the skin of the hosts grouped into three regions: cochlea (inside, edge and outside of ear), ano-genital region (genitals, anus and under the tail) and ventral re­gion (belly, breast and chin). Host preference, seasonal and topographical distribution, and co­existence of N. sympatrica with other chigger mites are given. With 3 figures and 6 tables. Key words - Parasitism, chigger mites, Kyrgyzstan. INTRODUCTION The larvae of chigger mites are temporary ectoparasites of a wide range of vertebrates, with feebly marked specificity in the choice of the hosts. The distri­bution of the mites adapted to a defined group of animals depends on the spreading of hosts, and on the abiotic factors of the habitats. The species of mites, parasitising representatives of amphibians, reptiles and birds, are more specific, than those associated with mammals. On mammals, the mites prefer the cochlea, and also the anus and genitals. The life cycle of Trombiculidae con­sists of three quiescent stages: eggs, protonymphs (nymph chrysalis), trito­nymphs (imago chrysalis), and three active phases: larvae, nymphs and imagoes. The chigger mites have the spermatophoric (external-internal) insemination.

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