. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. BRUES: PHORIDAE OF GREXADA. 503 the coxa and four less enlarged above near the spiracle; a bristle directly above spiracle. Mesopleura entirely bare. Abdomen with a taft of bristles at sides of second segment and a row of minute ones along the posterior margin of each segment. Legs large, but not. Fig. 2.— Bix;kerina ncotropica Brues. a, wing: b, front showing chaelotaxy. especially stout, all tibiae without bristles or setulae before apex; hind tibiae but not middle ones with a small patch of transverse comb
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. BRUES: PHORIDAE OF GREXADA. 503 the coxa and four less enlarged above near the spiracle; a bristle directly above spiracle. Mesopleura entirely bare. Abdomen with a taft of bristles at sides of second segment and a row of minute ones along the posterior margin of each segment. Legs large, but not. Fig. 2.— Bix;kerina ncotropica Brues. a, wing: b, front showing chaelotaxy. especially stout, all tibiae without bristles or setulae before apex; hind tibiae but not middle ones with a small patch of transverse comb- like rows of bristles inside at apex; tarsi slender. Wings small, broad basally, but much narrowed beyond middle; costa extending to slightly beyond middle of wing, the third vein widely separated from the costa; costal cilia rather short, closely placed; first section of costa scarcely longer than the second and third together, second twice as long as third, fork not very acute, the cell thus formed rather large, fourth vein evenly bent, not recurved at tip; fifth vein nearly straight; sixth faintly bisinuate; seventh nearly straight. This peculiar species is probably referable to Beckerina although the bristhng of the front is complete, with four bristles in the lower row, not two as occur in B. orphnephiloidcs Malloch. I have not seen the other member of the genus, B. umhrimarcjo Becker of Europe, but as nearly as I can gather from Becker's description the frontal chaetotaxy of that species is similar to the present one from Grenada. The tibiae are without bristles as in Aphiochaeta and do not even show the small setulae usually present on the hind pair in that 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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