THE PEA AXn BEAN WEE VII S. 1237 



B. discoi<h us Say, length 8— 1.5 mm., is ivforded from Ohio, 

 Kansas and Colorado. 



Group A. 



KKY TO .SPECIK.S OF (IHOl'l' A. 



((. lliud femur with a tooth on lioth inner and outer uiarijins; tliat (ju 

 inner side larger. 

 h. Median basal tlioracic lohe with elevated ivory-like space. (Fig. 

 555.) cmxExsis. 



hh. Median basal lobe with whitish hairs ouly. (Fig. "i.lT.) 



QLTADEI.M.VCrr.ATrS. 



(III. Hind femur with one tooth only on inner margin. 

 i: Elytra black with red spots on the spaces. 

 (/. Suture depressed ; elytra each with a red spot on middle which 

 touches the side margins. liU'.lO. niviLNERATrs. 



dd. Disk of elytra flat, the suture not deiiressed ; elytra more black 

 than rufous, the red spot near outer apical margin. 



CRUENTATrS. 



cc. Elytra wholly black, hind femora and tibiie biculored. xiriRixrs. 



B. cJiinfiisis Linn., antcnniv (if male strongly 

 pectinate, length 3-4 mm,, is known as the "cow- 

 pea weevil," as it lives in seeds of cow-peas, beans, 

 etc. B. quadrimaculal us Fab., longer, less robust, 

 with broader thorax, black with gray and white 

 pubescence, length 3-4.5 mm., is known as the 

 "four-spotted beau weevil," and also lives mainly 

 in cow-peas. Both are widely distribtited, have 

 been introduced in seeds and are likely to occur jr^g 557 Brudimqmc- 

 anv place in Indiana. JIT'^w/j''- /""''' 



^ ^ (After Chittenden.) 



2290 (7128). Bbdchus bivulneratls Horn, Trans. Amer. Ent. Soc, IV, 

 187.3, 325. 

 Oval, robust. Black, feebly shining ; elytra each with a large red spot 

 at middle which reaches the margin but not the suture. Head elongate- 

 oval, densely punctured. Antennse as long as head and thorax, the three 

 basal joints reddish. Thorax shining, one-half broader at base than long, 

 sides feebly curved and gradually narrowed to apex, base lobed at middle, 

 surface densely and rather coarsely punctured. Elytra as broad as long, 

 deeply striate; intervals flat, densely and rugosely punctate. Length 3- 

 3.5 mm. 



Southern two-thirds of State; frequent. ~S\a\ 15-October 14. 

 Occurs on flowers of milkweed and white snakeroot {Eupatorium). 

 The larva" are said to liroed in the seeds of wild senna {Cn<isia rnnri- 

 landira L.). 



