310 MANUAL OF VEGETABLE-GARDEN INSECTS 



has been reported as injurious to potato, tomato, pea and sugar- 

 beet. 



A closely related species, Macrobasis JomiicolUs Leconte 

 (Fig. 102), lacking the two black spots on the prothorax, has 



siiy 



Fig. 191. — The two-spotted 

 blister-beetle (X U). 



Fig. 192. — Macrohasis 

 longicolii.s ( X 2). 



been recorded as very destructive to potatoes and alfalfa in 

 New Mexico. 



Miscellaneous Bllster-Beetles 



The immacuJate hlister-heetle, Macrobasis immacuJaia Say, 

 is uniform yellowish gray in color and is nearly an inch in length. 

 It has been reported as injurious in Kansas and Colorado. It 

 feeds on potato, tomato and cabbage. 



The segmented black blister-beetle, Macrobasis segmentata Say, 

 is large and black, from f to an inch in length. It has been 

 recorded as injurious to beet, potato, tomato and cabbage in 

 Kansas. Its range extends into Mexico. The beetle is dull 

 black in color, usually with a narrow band of lighter hairs on 

 the front and hind margins of the prothorax. The underside 

 of the abdomen is ringed with a narrow band of light hairs on 

 the hind marsirin of each segment. 



