TIIK PEA AND UK AN WEKV1I S. 



/>'. discoideus Say, length 3 k-~> min., is recorded from Ohio, 

 Kansas and Colorado. 



GROUP A. 



KEY TO SPECIES OF GROt'P A. 



'/. Hind femur with a toolh on both inner and (inter margins; thai on 



inner side larger. 



li. Median basal thoracic lobe with elevated ivory-like space. (Fig. 

 555.) cm NUNS is. 



l>h. Median basal lobe with whitish hairs only. (Fig. 557.) 



QXJADBIMACULATUS. 



mi. Hind femur with one tooth only on inner margin. 

 c. Elytra black with red spots on the spaces. 



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

 touches the side margins. 2200. BIVULNERATTS. 



<hl. Disk of elytra flat, the suture not depressed; elytra more black 

 than rufous, the red spot near outer apical margin. 



CRUENTATUS. 



cc. Elytra wholly black, hind femora and tibiae bicolorcd. M!;KI.\ rs. 



B. chinensis Linn., antenna* of 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. quadrimaculatus Fat)., longer, less robust, 

 with broader thorax, black with gray and white 

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

 'four-spotted bean weevil," and also lives mainly 

 in cow-peas. Both are widely distributed, have 

 been introduced in seeds and are likely to occur Fjg 557 RruchllKgmd . 

 anv place in Indiana. rimacuiatus Fab. j<naie 



(After Chittenden.) 



2290 (7] 28). BRUCHUS BIVULNERATUS Horn, Trans. Amer. Ent. Soc., IV, 

 1873, 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. Antennte 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. 3.1 ay lo-October 14. 

 Occurs on flowers of milkweed and white snakeroot (Kupatorium). 

 The larva 1 are said to breed in the seeds of wild senna 

 landica L.). 



