. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 2 a. has a large macrochaeta curved dorsad ; serrata has no macro- chaeta at this point ; at the cephalo-ventral angle of the mesopleura (protecting the pro- stigma) aids has two small bristles ; serrata has a tuft of golden yellow hairs ; serrata has much longer and denser pile on the dorsum of the thorax. Other color differences are pointed out by Professor Snow in connection with his description of aids in Can. Ent., April, 1891. I am much indebted to the Ento- mological Department of Kansas University for a pair of
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 2 a. has a large macrochaeta curved dorsad ; serrata has no macro- chaeta at this point ; at the cephalo-ventral angle of the mesopleura (protecting the pro- stigma) aids has two small bristles ; serrata has a tuft of golden yellow hairs ; serrata has much longer and denser pile on the dorsum of the thorax. Other color differences are pointed out by Professor Snow in connection with his description of aids in Can. Ent., April, 1891. I am much indebted to the Ento- mological Department of Kansas University for a pair of speci- mens of H. aids which have enabled me to ascertain the im- portant differences in the chae- totaxy of the mesopleurae above mentioned. HcniicJilora. - - Only known species and type of genus H. vittigcra Bigot, Mexico. Professor Williston, in his Manual of North American Diptcra, p. 143, suggests parenthetically that this may be the Idia viridis of Wiedemann (Auss. Zivdf., Vol. II, pp. 354, 11). I quite agree with this suggestion for the following reasons. Meigen founded the genus Idia in 1826, and in his characterization (Syst. BescJir. Eur. Zwdf., Vol. V, p. 9) the only distinguishing character is the pectinate arista. To this Wiedemann (loc. dt., p. 347) adds : face prolonged forwards. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
