title: Distribution of the larvae of blackflies (Diptera: Simuliidae) at Doi Inthanon National Park, northern Thailand.
abstract: The larvae of seventeen Simulium species consisting of thirteen known species, three unnamed species and one new species were distributed in various localities with different habitats at 400-2,460 meters above sea level in Doi Inthanon National Park, Chiang Mai Province, northern Thailand. Simulium caudisclerum, S. sp G and S. sp H were restricted to the high altitude of 2,460 m at the cool Ang Kha habitat of the summit of Doi Inthanon. On the other hand, S. nakhonense and S. rudnicki occurred only at low altitudes from 400 m-700 m. Some Simulium species such as S. fenestratum, S. asakoae, S. inthanonense and S. sp J were found in the warmer localities at 1,010 m-1,280 m altitudes. Moreover, S. feuerborni and S. rufibasis were widely distributed species at different altitudes from 700 m-2,460 m and 1,010 m-2,300 m respectively. Therefore, the distribution and abundance of Simulium species seem to correlate with altitudes as well as micro-habitat factors such as water temperature and water velocity.
authors.affiliation: Department of Biology, Faculty of Science, Mahidol University, Bangkok, Thailand.
authors.forename: C
authors.initials: C
authors.lastname: Kuvangkadilok
authors.forename: C
authors.initials: C
authors.lastname: Boonkemtong
authors.forename: S
authors.initials: S
authors.lastname: Phayuhasena
mesh_terms: D000531:Altitude; D000818:Animals; D006801:Humans; D007814:Larva; D012621:Seasons; D012843:Simuliidae / Q000145:classification / Q000254:growth & development; D013785:Thailand