. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. I. THE THICK-HEAD FLIES (Family Conopidic.) The (lies of this group ;.re closely related to the syr- Phus (lies. Thev mav K- called, after Comstock. "the thick- head because 'their heads are large and conspicuous The tlies themselves are large, but are generally slender ,nd the abdomen is stalked, like those of some wasps.
. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. I. THE THICK-HEAD FLIES (Family Conopidic.) The (lies of this group ;.re closely related to the syr- Phus (lies. Thev mav K- called, after Comstock. "the thick- head because 'their heads are large and conspicuous The tlies themselves are large, but are generally slender ,nd the abdomen is stalked, like those of some wasps. The wmgs are usually dark and the insects themselves are dark- colored, but some have yellow bands on the abdomen. Those which belong to the genus Myopa are stouter and have hairy legs, almost like those of a robber-tly. The b.,u-head are toundupon tlowers with the syrphus (lies and their larvx are chienv upon bumblebees and wasps, but they have :,|so been found, according to Williston. in the bodies of grass- "'^'^The larva: of these llies live in the bodies of the full-grown wasps and bees. It has been supposed that the llies enter the bees' nests and place their egfS on thelarvx or pupx. but the ,dult llies always Ksue from the adult bees or wasps, having occupied the interior A the abdomen. When full-grown they freouentlv completely till the abdomen. Williston has seen a (onops following a bumblebee and repeatedly living against it and thinks that the eggs are deposited upon the body ol the bee ind that liter hatching the larvx boie into the abdcMninal cavity. In one instance a big-head fly was reared from the body of a bumblebee several months after the latter been killed and pmned in ;, collection. There is a peculiar genus in this lamily. Stvlog ister in which the female has an ovipositor which is longer body. more than thirty species of big- head llies, distributed in seven genera, are known to occur in the United States
Size: 1698px × 1472px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
