Economic entomology for the farmer Economic entomology for the farmer and fruit-grower economicentomolo01smit Year: 1906 THE INSECT WORLD. 347 Scenopinus fenestralis. of fact it is predaceous in habit, and feeds upon the species really infesting carpets and similar material. Thus, 'moths,' the larvae of the '' carpet-beetle,' ' fish-moths,'' and numerous other insects likely to occur in such situa- ^^^- 397- tions are destroyed by it. From this larva there comes in due time a small blue fly, a member of the family Scenopinida, slender and somewhat flattened in appearance, with yel- low or
Economic entomology for the farmer Economic entomology for the farmer and fruit-grower economicentomolo01smit Year: 1906 THE INSECT WORLD. 347 Scenopinus fenestralis. of fact it is predaceous in habit, and feeds upon the species really infesting carpets and similar material. Thus, 'moths,' the larvae of the '' carpet-beetle,' ' fish-moths,'' and numerous other insects likely to occur in such situa- ^^^- 397- tions are destroyed by it. From this larva there comes in due time a small blue fly, a member of the family Scenopinida, slender and somewhat flattened in appearance, with yel- low or reddish legs, and this may be sometimes seen upon the win- dows. These larvae have been often brought to me, and the little flies raised from them have always been Scenopinus fenestralis, from which Pro- fessor Comstock gives the group the name 'window-flies.' The remainder of the Diptera have the antennae short, rarely more than three-jointed, and usually with a bristle or style, called an 'arista,' which may or may not be feathered or plumose, from the second or third joint. The first of the families to which it is necessary to refer here is the Syrphidce, containing a large number of species, most of them prettily colored, yellow, black, or bronze, patterned and marked in many different ways. They frequent flowers, hovering and often remaining suspended over them in mid-air for some time, then suddenly darting away and again returning. Their habits and appearance frequently give them a resemblance to bees and wasps, and in some species this is carried so far that they are easily mistaken for members of the order Hymenoptera by those not familiar with them. As a rule, the head is quite large, the body barrel-shaped, and the abdomen a little flattened, varying from very slender to broadly oval in shape. This abdomen is yellow and black, or bronze banded, sometimes entirely bronzed, more rarely blue or green, but nearly always brightly colored in some way. Some of the flies hav
Size: 1695px × 1180px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
