. Bee flies of the world: the genera of the family Bombyliidae. Bombyliidae; Parasites. Subfamily Phthiriinae Becker, 1912 This group has in the past served as a dumping ground for a number of quite disparate elements. For- tunately Hesse (1938) recognizing this, transferred such elements as Adelogenys Hess and Apatomyza Wiedemann and Crocidium Loew back to the Bombyli- inae; for them I erect the tribe Crocidini; Hesse also removed the Geron Meigen group to a well-marked new subfamily; the genera like Apoli/sis Loew and Oligo- dranes Loew appear to me to show a much greater affinity to the gen
. Bee flies of the world: the genera of the family Bombyliidae. Bombyliidae; Parasites. Subfamily Phthiriinae Becker, 1912 This group has in the past served as a dumping ground for a number of quite disparate elements. For- tunately Hesse (1938) recognizing this, transferred such elements as Adelogenys Hess and Apatomyza Wiedemann and Crocidium Loew back to the Bombyli- inae; for them I erect the tribe Crocidini; Hesse also removed the Geron Meigen group to a well-marked new subfamily; the genera like Apoli/sis Loew and Oligo- dranes Loew appear to me to show a much greater affinity to the genus Usia Latreille, than to Phthiria Meigen, though I admit there is some general similarity in the antennae; nevertheless, the Phthiria-tyTpe an- tennae has arisen independently among other bee flies, even in the Bombyliinae. Of course, it would be possi- ble to unite the Usiinae and the Phthiriine, and there is some justification for this. Phthiriinae In this subfamily as here constituted the only world- wide representative is Phthiria Meigen, which appears to be present on all continents; favoring arid lands, it is abundantly represented in the southwestern United States. In the known species the larvae feed within the egg pods of locusts. The flies of this subfamily may be characterized by the slightly humped thorax, the 4 posterior cells and 2-branched third vein. While the pile and pubescence is generally sparse and scattered and rather short, there are exceptions in sucli as the almost woolly Acreotrichus Macquart from Australia. Most species are either light in color or have much pale color in the form of vittae or paired spots, and there are interesting sex differences. Thus in some Central American Phthiria Meigen the males are almost or quite solid black in contrast to much. Text-Figure 24.—Pattern of the approximate world distribution of the subfamily Please note that these images are extracted from scanned page images that may have been digitally enh
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Keywords: ., bookcentury1900, bookcollectionbiodiversit, booksubjectparasites
