476 BIOLOGY FOR BEGINNERS 



with ovipositors two to four inches in length. This insect is often 

 feared and destroyed when really it lives on wood borers and is 



very useful. 



HARMFUL LEPIDOPTERA 

 Moths. 



Bee moth, eggs laid in hive at night. 



Meal moth, webs in meal, flour, and cereals. 



Leaf rollers. 



Codlin moth, eggs in apple blossoms; larvae are " apple- worms." 



Currant and cherry worms, leaf and web nests. 



Leaf miners, minute larvae eat parenchyma of leaves. 



Clothes' moths, case makers in woolens and furs. 



Peach tree borers, attack base of trees, dangerous. 



Canker worms, "measure worms." 



Currant worm, "measure worms." 



Army worm, attacks grains, dangerous. 



Tussock moth, eats shade and fruit tree leaves, dangerous. 



Gypsy moth, leaf eater, dangerous. 



Tent caterpillar, maker of "worms' nests," dangerous. 



Butterflies. 



Larvae generally harmful in some degree as leaf eaters. 

 Cabbage "worm," common and very harmful. 



BENEFICIAL BEETLES 



Tiger beetles, predaceous, as adult and larva, on insects. 



Ground beetles, predaceous, very numerous, eat caterpillars and potato 



beetles. 



Water beetles, eat other larvae, snails, small fish, and decaying vegetation. 

 Carrion beetles, eat dead animals, manure, etc. Bury food. 

 Rove beetles, eat decaying matter. 

 Lady bug beetles, eat insect eggs, adults, lice, cottony scale. 



HARMFUL BEETLES 



Dermestids, eat fur, wool, carpet, dried meats, museum specimens. 

 Click beetles, larvae, wire worms, feed on grain roots. 

 Wood borers, larvae in trees. 

 Stag beetles, live on wood and sap. 

 Scarabs, lamellicorn beetles, a large order, 



Scavengers, dung beetles. 



Leaf eaters, adult on leaves, larvae on roots. 



Pollen eaters. 



Buck beetles, wood borers. 



Leaf beetles, potato "bug," asparagus and cucumber "bugs." Grape. 

 Weevils, live on grains, nuts, fruits, etc., very harmful; engraver beetles 

 under bark. 



