A revised checklist of chigger mites (Acari: Trombiculidae) from Thailand, with the description of three new species
Kittipong Chaisiri, Alexandr A. Stekolnikov, Benjamin L. Makepeace, Serge Morand
Journal of Medical Entomology, 53(2): 321-342 (2016).
S U M M A R Y
Chigger mites of Thailand were studied on the basis of larvae collected from 19 small mammal species (17 species
of Rodentia, 1 species of Erinaceomorpha, and 1 species of Scandentia) and revision of published data. Samples of
38 trombiculid species were collected from 11 provinces. Three new species were described: Trombiculindus kosapani
sp. nov., Helenicula naresuani sp. nov., and Walchia chavali sp. nov. Ten species were recorded in Thailand for
the first time: Leptotrombidium sialkotense Vercammen-Grandjean and Langston, 1976; Leptotrombidium subangulare
Wen and Xiang, 1984; Leptotrombidium tenompaki Stekolnikov, 2013; Leptotrombidium turdicola Vercammen-
Grandjean and Langston, 1976; Leptotrombidium yunlingense Yu, Yang, Zhang and Hu, 1981; Lorillatum hekouensis
Yu, Chen and Lin, 1996; Helenicula pilosa (Abonnenc and Taufflieb, 1957); Gahrliepia xiaowoi Wen and Xiang, 1984;
Walchia minuscuta Chen, 1978; and Walchia ventralis (Womersley, 1952). In all, 99 chigger mite species were considered;
the presence of 93 species was established in Thailand by original data or properly documented records in the
scientific literature. Evidence for 64 species records of 147 from a previous checklist of Thai chiggers (Tanskul 1993)
remains unknown. Distribution of chigger species by geographical regions of Thailand is discussed.