Chromosomal relationships of two new species in the simulium vernum macquart species-group (diptera: simuliidae) from Nepal
Document Type
Article
Publication Date
10-1-2020
Abstract
The polytene chromosomes and larvae of two species of black flies, Simulium gandakiense new species and S. magnacentrum new species, are described from the Himalaya Mountains of Nepal. Twenty-three chromosomal rearrangements were discovered in the two species, of which eight are shared. The species differ by four fixed inversions and by having unique sex chromosomes. Additionally, S. gandakiense has B chromosomes and S. magnacentrum has a chromocenter. Both species have a set of four fixed chromosomal inversions and accessory sclerites in the larvae, all of which are shared with members of the S. vernum speciesgroup in the Oriental Region, suggesting a biogeographic connection between the Himalayas and the Oriental Region for the S. vernum species-group.
Keywords
Aquatic insects, B chromosomes, Biodiversity, Himalayas, Polytene chromosomes
Divisions
tidrec
Funders
United States Department of Agriculture (USDA) [SC-1700527]
Publication Title
Proceedings of the Entomological Society of Washington
Volume
122
Issue
4
Publisher
Entomol Soc Washington
Publisher Location
SMITHSONIAN INSTITUTION DEPT ENTOMOLOGY, WASHINGTON, DC 20560 USA