1 84 ECONOMIC ENTOMOLOGY 



Adult. — General color a deep velvety blue black. Fore wings with 

 two large circular pale yellow spots, and hind wings with two smaller 

 white spots. Wing expanse iH inches. May- July. Single brooded. 



Larva. — One and two-fifth inches long; bluish-brown; head and cervi- 

 cal shield bright orange with black spots. Each segment crossed with 

 black, white and orange bands; eleventh segment with a prominent 

 hump; legs black; base of prolegs orange. Full grown in early August. 



Pupa. — A chrysalis within a slight cocoon just below the surface of 

 the ground. Hibernates. 



Parasites. — Winthemia 4-pustulata Fab. — A tachinid. 



Control. — Spray the larvae with arsenate of lead or pyrethrum. 



NOCTUID^ (OWLET OR MILLER MOTHS) 



According to their manner of feeding on plants the larvae of Noctuids 

 may be classified roughly into: (a) Cutworms proper, feeding on roots 



Fig. 123. — Mouth parts of a caterpillar, the striped cutworm (Euxoa tessellata) : 

 Ant., antennae; CI., clypeus; Lb., labium; Md., mandible; Mp., maxillary palpus; 

 Lbr., labrum; Mx., maxilla; S., spinneret. 



of grasses and cutting off young plants at surface, (b) Army-worms, 

 eating the leaves of cereal and other crops, (c) Climbing cutworms, 

 feeding on buds of fruit trees, (d) Loopers and caterpillars, feeding 

 on leaves of turnip, cabbage, celery and other plants, {e) Ear-worms, 

 feeding on kernels of corn in the field. (/) Stalk-borers, feeding in 

 tunnels made in stems, (g) Green Fruit-worms, feeding on the surface 



