414 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



middle of September, and the third begins to issue from the egg 

 curly in October. This brood hibernates about half grown, attain- 

 ing full size during the latter part of April." 



Control. Xo accounts of experiments in control are on record, 

 but doubtless the same measures as used against the cabbage 

 looper will be found applicable". 



The Carrot-beetle * 



The carrot-beetle is a native species which has been particu- 

 larly injurious to carrots along the Atlantic Coast from Long 

 Island through the Gulf States. The species occurs, however, 

 very general!}' throughout the country as far north as central 

 Indiana, and on the Pacific coast. It has a considerable number 



of food-plants; in Louisiana 

 and Mississippi it has injured 

 the corn crop, the beetles cut- 

 ting the corn just above the 

 roots; in Illinois the beetles 

 injured sunflowers and sweet 

 potatoes; in Indiana they at- 

 tacked carrots, celery and par- 

 snips; in Texas they have 

 injured potatoes and shrubs 

 and vegetables of various 

 kinds; and in Nebraska they 

 have damaged sugar-beets. 



The damage is done entirely 

 by the adult beetles, which are 

 among the smaller of the May- 

 beetles or June-bugs, measure 



one-half to five-eighths of an inch long, and are from reddish 

 brown to nearly black in color. The beetles gouge into the roots 

 or stems just below the surface of the soil, often ruining the root 

 for market without injuring the top. The injury may occur by 



* Ligyrus gibbosm Dej . Family Scarabaeidce. See F. H . Chittenden, 

 Bulletin 33, n. s., Div. Ent., U. S. Dept. Agr., p. 32. 



FIG. 299. The carrot-beetle (Ligyrus 

 gibbostui Dej.) much enlarged. 

 (After Forbes.) 



