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Three New Ontario Black Flies of the Genus Prosimulium (Diptera: Simuliidae): Part I. Descriptions, Morphological Comparisons with Related Species, and Distribution1

Published online by Cambridge University Press:  31 May 2012

P. D. Syme  and
D. M. Davies
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Extract

Chromosonial studies have elucidated phylogenetic relations in Drosophila (White, 1954), culicids (Jucci, 1952) and chironomids (Bauer, 1936, 1945). Since it appeared promising to apply this approach to the Simuliidae, Rothfels and Dunbar (1953) began a cytological survey of the black flies of eastern Canada during the summer of 1951. They found that in this group the giant salivary gland chromosomes provided “a wealth of descriptive morphological detail in their number and gross morphology, in the characteristics of expanded centromere regions, in the location of specific nucleolar sites, in the degree of pairing of constituents, and in the ultimate discernible banding pattern…. Since these features are not functionally related to the external environment, the confusing effects of convergence are minimized, resemblances may be taken to indicate relation, and grouping is possible according to natural affinities” (Rothfels and Dunbar, 1953).

Type
Articles
Information
The Canadian Entomologist , Volume 90 , Issue 12 , December 1958 , pp. 697 - 719
Copyright
Copyright © Entomological Society of Canada 1958

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References

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