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1 March 2009 The Salivary Gland Chromosomes of the Himalayan Black Fly Simulium (Simulium) dentatum (Diptera: Simuliidae)
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Abstract

Proper identification of the black flies is facilitated by chromosomal characteristics when morphotaxonomic parameters are insufficient to distinguish a species. Using photo composites, we constructed and describe from the salivary glands of larvae a standard polytene chromosome map of a Himalayan black fly, Simulium (Simulium) dentatum, in the multistriatum group (Diptera: Simuliidae). This species has three metacentric polytene chromosomes (n=3), with homologues more or less intimately paired and having a prominent centromere. The largest chromosome (I) was 40.55% of total complementary length (TCL); chromosomes II and III were 30.14% and 29.31%, respectively. Chromosome I is characterized by the presence of a prominent nucleolar organizer at IS 19. Chromosome II is characterized by the presence of a Balbiani ring at IIS 41B, followed by bulge and a Parabalbiani ring at IIL 64 B. Prominent homogeneously stained centromeres of chromosomes I, II, and III lie at the map positions L21A, L55, and L84, respectively.

© 2009 Zoological Society of Japan
Willie Henry, Subrata Kumar Dey, and Rakesh Varma "The Salivary Gland Chromosomes of the Himalayan Black Fly Simulium (Simulium) dentatum (Diptera: Simuliidae)," Zoological Science 26(3), 216-219, (1 March 2009). https://doi.org/10.2108/zsj.26.216
Received: 6 September 2008; Accepted: 1 December 2008; Published: 1 March 2009
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