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RELATIVE ABUNDANCE AND SEASONAL DISTRIBUTION OF TABANIDAE (DIPTERA) NEAR GUELPH, ONTARIO

Published online by Cambridge University Press:  31 May 2012

Victor I. Golini
Affiliation:
Department of Environmental Biology, University of Guelph, Guelph, Ontario NlG 2W1
Russell E. Wright
Affiliation:
Department of Environmental Biology, University of Guelph, Guelph, Ontario NlG 2W1

Abstract

A total of 34 species of female tabanids were collected with CO2-traps from four different habitats near Guelph, Ont., during the 1971, 1972, and 1973 fly seasons. Nearly equal numbers of species were trapped at the Ontario Reformatory, Preston, Kortright, and the Hanlon Creek watershed, comprising a total of 15 Chrysops spp., 12 Hybomitra spp., 6 Tabanus spp., and 1 Atylotus sp. Relative abundance and flight periods are reported for each species. Chrysops frigidus O. S. and Hybomitra lasiophthalma (Macq.) were the most abundant species among their respective tribes; their abundance was related directly to degree of soil wetness, differing from that of Tabanus similis Macq. and T. quinquevittatus Wd. which was related inversely to these habitat types. The flight period of nearly 85% of the sampled population, consisting mainly of C. frigidus, H. lasiophthalma, and H. epistates (O.S.), spanned from the end of May till mid-July. T. quinquevittatus, T. lineola Fab., and H. epistates occurred till mid-September.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1978

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