174 



MAINE STATE ( <>LLEGE 



common. It is one-tenth of an inch long, oval in form, head bent 

 downward and more or less concealed from above, prolonged into 

 a short, squarely-cut beak. Antennas distinctly jointed, enlarged 

 at the tip, the four basal and the terminal joints reddish or yellow- 

 ish. Thorax and abdomen about the same width where they join. 

 Wing covers marked by ten impressed and punctured lines in flat- 

 tened ribs, which are clothed with a short pubescence, arranged in 

 yellowish, black and whitish spots and lines — the white lines more 

 distinct on the third rib. The abdomen is pale, dull yellow, with a 

 black band on the fore part of each joint. It projects beyond the 

 wing covers and that part is obscure grayish with a faint, medium 

 whitish stripe. The hind thighs near their end armed with a long 

 and two short spines. Feet reddish. 



The larva? are white and 

 broadly oval, see Fig. 13. The 

 eggs white, thicker at one end 

 and about three times as long 

 C as wide. 



The work of this insect ap- 

 pear on the surface of the beans 

 as small holes from which the 

 beetles have escaped, and small 

 oval, translucent spots on the 

 surface over the cells that con- 

 tain bettles that have not 

 emerged. The work is shown 

 in Fig. 14. The inside of the 

 bean in badly infested speci- 

 mens is entirely converted into 

 a powdery mass of excreta. 

 Often the beans will contain 

 larvae in various stages of 

 growth and also beetles. Fig. 

 15 shows the pupa. Fig. 1& 

 shows the closely related Pea 

 Weevil, enlarged and natural. 



a 



Fig. 13. 



Fig. 15. Bean Weevil 

 pupa. 



Fig 14. Bean 

 Weevil. Work 

 of the insect. 



size, which is given for comparison. 



