408 ARTICULATES: INSECTS. 



bers. The females crawl up the nearest trees, where they 

 are joined by the males, and soon begin to lay their eggs, 

 which they place in rows, forming separate clusters of 

 sixty to a hundred or more, each cluster being the pro- 

 duct of a single female. Canker-worms are among the 

 most destructive of all the insects, and it is not till they 

 have nearly ruined the foliage of a tree that we are fully 

 aware of their presence. 



The Genus Hibernia contains the Lime-tree Winter- 

 Moth, H. tiliaria, Harr., which expands an inch and three 

 fourths, and the fore wings are rusty buff, with fine brown- 

 ish dots and two transverse wavy brown lines ; hind wings 

 paler, with a brownish dot in the middle. 



PYRALID^:, OR DELTA-MOTH FAMILY. This Family 

 comprises those called Delta-Moths because of their tri- 

 angular form when the wings are closed. 



The Genus Hypena contains the Hop-vine Moths, which 

 have their feelers long, wide, and held close together and 

 projecting like a snout, and the antennae bristle-like. The 

 caterpillars are false loopers, bending up the back a little 

 when they creep. They are about eight tenths of an inch 

 long when fully grown, and green. When disturbed they 

 bend their bodies with a jerk, first on one side, then on 

 the other, each time throwing themselves to a consid- 

 erable distance. They eat large holes in the hop-leaves. 



The Genus Aglossa contains the Grease-Moth, A. pin- 

 guinalis, Harr., which has the wings narrow, glossy, smoky 

 gray, and crossed by wavy lighter-colored bands. The 

 larva lives in fatty substances. 



The Genus Pyralis contains the Meal-Moth, P. farina- 

 Us, Harr., which expands about one inch, the fore wings 

 light brown, crossed by two curved white lines, and there 

 is a dark chocolate-brown spot on the base and tip. The 

 caterpillar is found in old flour-barrels. 



The Genus Galleria contains the Bee-Moth, G. cereana, 



