Description of a new tick species, Ixodes collaris n. sp. (Acari: Ixodidae), from bats (Chiroptera: Hipposideridae, Rhinolophidae) in Vietnam

Hornok, Sándor and Görföl, Tamás and Estók, Péter and Tan Tu, Vuong and Kontschán, Jenő (2016) Description of a new tick species, Ixodes collaris n. sp. (Acari: Ixodidae), from bats (Chiroptera: Hipposideridae, Rhinolophidae) in Vietnam. PARASITES AND VECTORS, 9. p. 332. ISSN 1756-3305

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Abstract

Background: In a recent study on ixodid bat ticks from Eurasia, a high genetic difference was found between Ixodes vespertilionis from Europe and Vietnam. Accordingly, it was proposed that I. vespertilionis is a species complex, with at least one additional, hitherto undescribed spe cies. The aim of the present study was to investigate the morphology of bat ticks from Vietnam and to asses s their taxonomic status in comparison with those collected in Europe. Findings: Ixodid bat ticks (two females and two nymphs) collected from the pomona leaf-nosed bat ( Hipposideros pomona ) (Hipposideridae) and intermediate horseshoe bat ( Rhinolophus affinis ) (Rhinolophidae) in Vietnam showed major morphological differences from European isolates of I. vespertilionis , including the shape of the scutum, the enclosure and shape of porose areas, the presence of a caudo-lateral collar-like ridge ventrally on the basis capituli, polytrich coxae with short setae, and grouped (non-linear) arrangement of anterior pit sensillae in Haller ’ sorgan. Conclusions: In this study the female and the nymph of an ixodid bat tick species from Vietnam are described for the first time. The genetic and morphological differences between I. vespertilionis Koch,1844andthesebatticks from Vietnam justify the status of t he latter as a distinct species, Ixodes collaris Hornok n. sp. Keywords: Ixodes vespertilionis , Bat tick, Rhinolophus affinis , New species, Ixodes collaris Hornok n. sp, Vietnam

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