title: Cytogenetic evidence for a fifth species within the taxon Anopheles dirus in Thailand.
abstract: Crossbreeding and chromosomal evidence are presented for the existence of a fifth sibling species within the taxon of Anopheles dirus in Thailand. The new species is morphologically identifiable as Anopheles balabacensis "Fraser's Hill form." Structural differences in mitotic chromosomes and extensive asynapsis in hybrid polytene chromosomes indicate that significant genetic divergence exists between this species and its closest relatives, An. dirus species A, B, C and D and An. balabacensis.
authors.affiliation: Department of Biology, Faculty of Science, Mahidol University, Bangkok, Thailand.
authors.forename: V
authors.initials: V
authors.lastname: Baimai
authors.forename: R E
authors.initials: RE
authors.lastname: Harbach
authors.forename: U
authors.initials: U
authors.lastname: Kijchalao
mesh_terms: D000818:Animals; D000852:Anopheles / Q000145:classification / Q000235:genetics*; D002875:Chromosomes / Q000648:ultrastructure; D005260:Female; D007621:Karyotyping; D008297:Male; D013045:Species Specificity; D013785:Thailand