Author： HENRY L. G. ADKINS T. R.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.68, Iss.2, 1975-03, pp. : 321-324
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Abstract
Vertical distribution studies of certain Culicoides species were conducted in both salt-marsh and wooded areas. In the salt-marsh, light trap collections of Culicoides furens (Poey) and C. melleus (Coquillett) were made at 4 heights above ground level. Numbers of midges were highest at 45 and 25 ft and fewest at 5 and 60 ft; results were similar for males and females of both species. Wind direction had no effect on vertical stratification of these 2 species. In a wooded area, the following species were more abundant in the tree canopy (42 ft above ground level) than below the canopy (20 ft above ground level) : C. furens, C. haematopotus Malloch, C. stellifer (Coquillett), and C. villosipennis Root & Hoffman. Culicoides arboricola Root and Hoffman and C. spinosus Root and Hoffman were equally distributed at 20 and 42 ft, and C. chiopterus (Meigen), C. obsoletus grp., and C. travisi Vargas were more abundant at or below 20 ft than above (42 ft). The relationship between vertical stratification, reported breeding sites, and host preference is discussed for each of these species.
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