INSECTS INJURIOUS TO BEANS AND PEAS 



113 



Cutworms and Other Caterpillars. — Xumerous other caterpil- 

 lars devour the foliage of beans and peas of which cutworms 

 are among the most important, often causing extensive damage 

 to young plants by cutting them ofif near the ground, and to 

 older plants by severing their leaves and tender shoots. Cut- 

 worm remedies are considered on page 54. 



A green-striped caterpillar (fig. 68), misnamed the bean cut- 

 worm (Ogdocoiita cincrcola Guen.), does injury to the foliage 



Fig. 68.— Bean cutworm Ogdoconta cinereolai. a. Moth, b. larva; c, abdominal seg- 

 ments nf larva; d, pupa. All enlarged. (Author's illustration, U. S. Dept. Agr.) 



and pods of beans, sometimes stripping the vines bare. Other 

 troublesome species include the zebra caterpillars, the yellow 

 bear and salt-marsh caterpillars. 



The bollworm or corn-ear worm (Heliothis obsolcta Fab.) is 

 a very serious enemy of beans frequently destroying the seed by 

 crawling into the green pods. No means of preventing this 

 form of injury is known. A more extended account of this 

 pest will be given under "Insects Injurious to Sweet Corn." 



The caterpillar of a beautiful little butterfly, the gray hair- 

 streak (Thecla melinus Hbn.) is sometimes injurious to beans 

 and peas by eating into the pods. The butterfly is on the wing 

 almost continuously from May to September in the North, and 

 from March to November farther South. This species seldom 



