The polytene chromosomes of North American blackflies in the Eusimulium canonicolum group (Diptera: Simuliidae)
The polytene chromosomes of four taxa are described. These are (i) Eusimulium canonicolum Dyar and Shannon from four sites in Alberta; (ii) Eusimulium emarginatum (Davies, Peterson &Wood) from sites in Ontario, West Virginia, and Pennsylvania; (iii) Eusimulium euryadminiculum (Davies) with sampl...
| Published in: | Canadian Journal of Zoology |
|---|---|
| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1984
|
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/z84-304 http://www.nrcresearchpress.com/doi/pdf/10.1139/z84-304 |
| Summary: | The polytene chromosomes of four taxa are described. These are (i) Eusimulium canonicolum Dyar and Shannon from four sites in Alberta; (ii) Eusimulium emarginatum (Davies, Peterson &Wood) from sites in Ontario, West Virginia, and Pennsylvania; (iii) Eusimulium euryadminiculum (Davies) with samples from Newfoundland, Ontario, Saskatchewan, and Alberta; and (iv) "Hinton," an undescribed species from western Alberta. These four taxa form a cytologically cohesive group, and they are characterized in terms of fixed inversion differences, sex differential segments, and inversion polymorphisms. Polytene chromosome idiograms and a cytophylogeny are presented. The morphologically related Eusimulium johannseni (Hart) is excluded on the grounds of its stronger chromosomal affiliation with the Eusimulium vernum group. |
|---|