Abstract
Two new chigger species, Leptotrombidium mondulkiri sp. nov. and Walchia keoseima sp. nov., and one new subspecies, Leptotrombidium pilosum cambodiensis subsp. nov., are described from Cambodia. Three species, Walchia lupella (Traub and Evans, 1957), W. micropelta (Traub and Evans, 1957), and W. kritochaeta (Traub and Evans, 1957), are for the first time reported from the country. A redescription of W. lupella is given based on new materials from Cambodia and Thailand.
References
- Antonovskaia, A.A., Lopatina, Y.V. & Nguen, V.H. (2017) The infestation of small mammals in south-eastern Vietnam with harvest mites (Acari: Trombiculidae). Meditsinskaya Parazitologiya i Parazitarnye Bolezni, 1 (1), 36–43. [In Russian with English summary]
- Chaisiri, K., Stekolnikov, A.A., Makepeace, B.L. & Morand, S. (2016) A revised checklist of chigger mites (Acari: Trombiculidae) from Thailand, with the description of three new species. Journal of Medical Entomology, 53, 321–342. https://doi.org/10.1093/jme/tjv244
- Chau, N.V., Hien, D.S. & Van, N.T. (2007) Fauna of Vietnam. 16. Trombiculidae—Acarina, Siphonaptera. Science and Technics Publishing House, Ha Noi, 209 pp.
- Chheng, K., Carter, M.J., Emary, K., Chanpheaktra, N., Moore, C.E., Stoesser, N., Putchhat, H., Sona, S., Reaksmey, S., Kitsutani, P., Sar, B., Rogier van Doorn, H., Nguyen Hanh Uyen, Le Van Tan, Paris, D., Blacksell, S.D., Amornchai, P., Wuthiekanun, V., Parry, C.M., Day, N.P.J. & Kumar, V. (2013) A prospective study of the causes of febrile illness requiring hospitalization in children in Cambodia. PLoS ONE, 8 (4), e60634. https://doi.org/10.1371/journal.pone.0060634
- Chung, L.H., Wu, W.J., Kuo, C.C. & Wang, H.C. (2015) A checklist of chigger mites (Acari: Trombiculidae and Leeuwenhökiidae) from Taiwan, with descriptions of three new species. Journal of Medical Entomology, 52, 1241–1253. https://doi.org/10.1093/jme/tjv139
- Duong, V., Trinh Thi Xuan Mai, Blasdell, K., Le Viet Lo, Morvan, C., Lay, S., Anukool W., Wongprompitak, P., Supputtamongkol, Y., Laurent, D., Richner, B., Ra, C., Bui Trong Chien, Frutos, R. & Buchy, P. (2013) Molecular epidemiology of Orientia tsutsugamushi in Cambodia and Central Vietnam reveals a broad region-wide genetic diversity. Infection, Genetics and Evolution, 15, 35–42. https://doi.org/10.1016/j.meegid.2011.01.004
- Fernandes S.J., S. & Kulkarni, S.M. (2003) Studies on the trombiculid mite fauna of India. Records of the Zoological Survey of India, Occasional Paper, 212, 1–539.
- Fox-Lewis, A., Hopkins, J., Sar, P., Sao, S., Pheaktra, N., Day, N.P.J., Blacksell S.D. & Turner, P. (2019) Seroprevalence of dengue virus and rickettsial infections in Cambodian children. The American Journal of Tropical Medicine and Hygiene, 100 (3), 635–638. https://doi.org/10.4269/ajtmh.18-0865
- Goff, M.L. & Durden, L.A. (1987) A new species and new records of chiggers (Acari: Trombiculidae) from North Sulawesi, Indonesia. International Journal of Acarology, 13 (3), 209–211. https://doi.org/10.1080/01647958708683769
- Hadi, T.R. & Carney, W.P. (1977) Two new trombiculid mites from mammals of South Vietnam, with locality records for six additional species (Acarina: Trombiculidae). Journal of Medical Entomology, 14, 455–460. https://doi.org/10.1093/jmedent/14.4.455
- Hotez, P.J., Bottazzi, M.E., Strych, U., Chang, L.-Y., Lim, Y.A.L., Goodenow, M.M. & AbuBakar, S. (2015) Neglected tropical diseases among the association of Southeast Asian nations (ASEAN): overview and update. PLoS Neglected Tropical Diseases, 9 (4), e0003575. https://doi.org/10.1371/journal.pntd.0003575
- Kelly, D.J., Fuerst, P.A., Ching, W.-M. & Richards, A.L. (2009) Scrub typhus: the geographic distribution of phenotypic and genotypic variants of Orientia tsutsugamushi. Clinical Infectious Diseases, 48 (s3), S203–S230. https://doi.org/10.1086/596576
- Kumlert, R., Chaisiri, K., Anantatat, T., Stekolnikov, A.A., Morand, S., Prasartvit, A., Makepeace, B.L., Sungvornyothin, S. & Paris, D.H. (2018) Autofluorescence microscopy for paired-matched morphological and molecular identification of individual chigger mites (Acari: Trombiculidae), the vectors of scrub typhus. PLoS ONE, 13 (3), e0193163. https://doi.org/10.1371/journal.pone.0193163
- Morand, S., Blasdell, K., Bordes, F., Buchy, P., Carcy, B., Chaisiri, K., Chaval, Y., Claude, J., Cosson, J.-F., Desquesnes, M., Jittapalapong, S., Jiyipong, T., Karnchanabanthoen, A., Pornpan, P., Rolain, J.M. & Tran, A. (2019) Changing landscapes of Southeast Asia and rodent-borne diseases: decreased diversity but increased transmission risks. Ecological Applications, 29 (4), e01886. https://doi.org/10.1002/eap.1886
- Mueller, T.C., Siv, S., Khim, N., Kim, S., Fleischmann, E., Ariey, F., Buchy, P., Guillard, B., González, I.J., Christophel, E.-M., Abdur, R., von Sonnenburg, F., Bell, D. & Menard D. (2014) Acute undifferentiated febrile illness in rural Cambodia: a 3-year prospective observational study. PLoS ONE, 9 (4), e95868. https://doi.org/10.1371/journal.pone.0095868
- Santibáñez, P., Palomar, A., Portillo, A., Santibáñez, S. & Oteo, J.A. (2015) The role of chiggers as human pathogens. In: Samie, A. (Ed.), An Overview of Tropical Diseases. Intech Open Limited, London, pp. 173–202. https://doi.org/10.5772/61978
- Schluger, E.G., Grochovskaja, I.M., Ngu, D.V., Hoe, N.X. & Tung, D.K. (1960) The trombiculid mites of the genus Gahrliepia (Acariformes, Trombiculidae) from North Viet-Nam. Entomologicheskoe Obozrenie, 39, 462–476. [in Russian]
- Stekolnikov, A.A. (2013) Leptotrombidium (Acari: Trombiculidae) of the World. Zootaxa, 3728 (1), 1–173. https://doi.org/10.11646/zootaxa.3728.1.1
- Stekolnikov, A.A. (2021) A checklist of chigger mites (Acariformes: Trombiculidae) of Southeast Asia. Zootaxa, 4913 (1), 1–163. https://doi.org/10.11646/zootaxa.4913.1.1
- Traub, R. & Evans, T.M. (1957) Records and descriptions of chiggers of the subgenus Walchia Ewing, 1931, from Southeast Asia (Acarina, Trombiculidae). Studies from the Institute for Medical Research, Federation of Malaya, 28, 297–358.
- Traub, R. & Lakshana, P. (1966) Some chiggers of the subgenus Leptotrombidium from Thailand, with descritions of new species (Acarina, Trombiculidae). Journal of Medical Entomology, 3, 271–292. https://doi.org/10.1093/jmedent/3.3-4.271
- Vercammen-Grandjean, P.H. (1971) Revision of the species Walchia disparunguis (Oudemans, 1929) and its group (Acarina, Trombiculidae). Opuscula Zoologica, 115, 1–12.
- Vercammen-Grandjean, P.H. & Langston, R.L. (1976) The Chigger Mites of the World (Acarina: Trombiculidae et Leeuwenhoekiidae). III. Leptotrombidium complex. George Williams Hooper Foundation, University of California, San Francisco, California, 1061 pp.
- Wen, T.H. (1984a) Catalogue of the known species of sand mites and their hosts in China (Acariformes: Trombiculidae & Leeuwenhoekiidae). In: Wen, T.H. (Ed.), Sand Mites of China (Acariformes: Trombiculidae & Leeuwenhoekiidae). Xue Lin Publishing House, Shanghai, pp. 295–339. [in Chinese]
- Wen, T.H. (1984b) Records of Walchia lupella in China. In: Wen, T. (Ed.), Sand Mites of China (Acariformes: Trombiculidae & Leeuwenhoekiidae). Xue Lin Publishing House, Shanghai, pp. 67–68. [in Chinese]