title: Natural interspecific hybridisation of simulium sanctipauli s.l. with Simulium squamosum and Simulium yahense (Diptera: Simuliidae).
abstract: Natural hybridisation between Simulium sanctipauli (sensu Quillevéré et al. 1981) and Simulium squamosum/yahense occurs at a rate of around 0.001. A single larva has been found which is unambiguously a backcross between S. sanctipauli s.l. and a S. sanctipauli s.l. X squamosum/yahense hybrid. This discovery indicates the possibility of genetic introgression between these species. Examination of the polytene chromosomes of this backcross progeny and subsequent re-examination of the type specimens has led to the remapping of fixed interspecific inversions in chromosome arm 1L.
mesh_terms: D000818:Animals; D002874:Chromosome Mapping; D002875:Chromosomes / Q000648:ultrastructure; D003433:Crosses, Genetic; D005260:Female; D006824:Hybridization, Genetic; D007621:Karyotyping; D008297:Male; D012843:Simuliidae / Q000235:genetics* / Q000648:ultrastructure