IV. INSEOTA: HEXAPODA, LEPIDOPTERA. 



495 



Sub Order III. NOCTUINA. Owlet moths; with short bodies; fore 

 wings usually gray and ornamented by two spots and zigzag lines which 



FIG. 535. Leucania unipunctata^ army-worm and moth. (From Riley.) 



at rest cover the frequently (as in Catocala *) brightly colored hind wings. 

 1800 species in United States. Hypenahumuli,* hop worm ; Aletia argil- 

 lacea* cotton worm ; Leucania unipunctata* army worm ; cut worms. 



Sub Order IV. BOMBYCINA, silk worms. Body large, wooly, usually 

 broad dull-colored wings ; occasionally lacking in the females ; proboscis 

 frequently rudimentary. Antennae long, pectinate ; larvae hairy, with, 

 well-developed spinning powers. Most important are the true silk worms 

 (Bornbyx mori*), natives of China, while others, like Telea polyphemus* 

 furnish silk of value. Still others cause great damage to forest trees, 

 among them the tent caterpillars (Clisiocampa*) and the imported gipsy 

 moth Ocneria dispar (fig. 72). 



Sub Order V. SPHINGINA. Body long, stout ; fore wings long, slender, 

 hind wings shorter ; proboscis very long ; antennae short ; larvae with a 



FIG. 536. Every x my run. (From Riley.) 



caudal spine. Phlegetliontius celeus,* tomato worm ; P. Carolina* tobacco 

 worm. Considerably different are the SESIID^E, or 'clear wings,' which 

 resemble bees and wasps. 



Sub Order VI. RHOPALOCERA, butterflies. Body slender ; wings 

 held vertically when at rest, proboscis long ; antennae clubbed at the tip ; 



