467 



Hind femora thickened, with one tooth or more beneath 

 near the apex 2. 



Hind femora strongly s\volk>n, with several teeth l)eneath. 

 .V large, rather elongate species, reddish brown tlirongh- 



ont Caryohorii.s cjonagra. 



Hind femora less swollen, with one or two teeth and some- 

 times two denticles 3. 



Hind femora with one tooth withont and one within 4. 



Hind femora with one tooth, with or without denticles.... 6. 

 Form compact, posterior middle lobe of pronotnm clothed 

 with snowy-white pubescence, antennae of male pectinate 



_ Bruchus cliinensis 



Form more slender, pubescence of middle lobe dull, anten- 

 nae of male serrate 5. 



Smaller, pronotnm and elytra more sparsely pubescent, in- 

 tegument of elytra dark along the lateral and hind margins 

 usually expanded in the female into a dark semicircular 

 spot, integument of pronotnm largely dark, pygidium of 

 female with large, distinctly separated, lateral, integu- 

 mentary dark spots, outer subapical to(3th of hind femora 



acute Bruchus quadrimaculatus 



Larger, pronotum and elytra more densely pubescent, pro- 

 notum and elytra reddish, narrowly crescentic dark integu- 

 mentary spot on the sides of the elytra, pygidium of female 

 reddish wath a dark narrowdy divided subapical cloudv 



spot, outer subapical tooth of hind femora blunt 



Dolichos weevil 



Pronotum with a blunt obsolescent tooth on either side 



near the middle, hind femora with a single tooth... 7. 



Pronotum with the sides evenly rounded, hind femora 



with one tooth, with or without two denticles. 8. 



Hind femora acutely toothed, pronotum broader, pygidium 



with two definite dark spots Bruchus pisorum 



Hind femora obtusely or obsoletely toothed, pronotum nar- 

 rower, dark spots of pygidium absent or poorly defined.... 

 Bruchus rufimanus 



