164 



THE MONTHLY BULLETIN. 



burrow into the loose soil during- the day and feed at night. When 

 f nil-grown they go into the soil, transform into dark brown chrysalids 

 and thus pass the winter in small cells, the moths hatching out the 

 following spring. 



Distribution. — Especially abundant in the San Joaquin Valley, 

 though the species is widely scattered throughout the State. 



Food Plants. — Particularly injurious to grapevines and prune trees 

 though the larvae feed upon a great many other plants. 



THE TOMATO, CORN EAR-WORM OR COTTON BOLL-WORM. 



Heliothis ohsoleta Fab. (Family NoctuidtB). 



(Ilcliothis armiyer Hiibn.) 



(Fig. 14 8.) 



General Appearance. — The adult moths are day as well as night 

 flyers and are exceedingly common. They are nearly one inch long 



Fig. 148 — The corn ear-worm. Heliothis ohsoleta 

 Fab. (U. S. Dept. AgrcL). 



and grayish or brownish in color, with or without markings upon tiie 

 fore wings. The eggs are dirty yellowish-white in color. The larvae 

 are nearly two inches long when full-grown and vary from yellowish 

 to brownish in color with longitudinal gray and white stripes and with 

 eight dark spots or tubercles on each segment. The pup« are rich 

 brown. 



Distribution. — Exceedingly common in all parts of the State. 



Food Plants. — This species is perhaps most commonly known in 



