1230 



FAMILY LIII. CHRYSOMELID.L. 



short, the body more convex than in the next genus. Five species 

 probably occur in the State. 



KEY TO INDIANA SPECIES OF CASSIDA. 



a. Elytra with black spots or stripes. 



6. Elytra each with three small, obscure black spots near the middle, 

 two of these sometimes absent. 

 c. Dull red ; larger. 6-7.5 mm. 2277. nigripes. 



cc. Dull yellow ; smaller, not over 5.5 mm. 227S. ateipes. 



&6. Elytra dull yellow, each with sutural line and two stripes black; 

 thorax reddish-yellow. 2279. bivittata. 



aa. Elytra uniform green or greenish-yellow without spots or stripes. 



d. Under surface black ; elytral punctures confused. thoeactca. 

 dd. Under surface pale : elytra each with nine rows of very coarse punc- 

 tures. 22S0. PALLIDULA. 



2277 (7007). Cassida nigeipes Oliv.. Encyc. Meth.. V, 1790, 34S. 



Broadly ovate. Dull red; elytra each with three ob- 

 scure black dots near the middle ; under surface and legs 

 black, shining; base of antennce, tibia? in part and tarsi 

 reddish. Thorax twice wider than long, broadly rounded 

 in front, smooth. Elytra with edges thickened and re- 

 flexed, base deeply emarginate. the humeral angles promi- 

 nent; each with nearly regular rows of fine, scarcely im- 

 pressed punctures. Length 6-7.5 mm. (Fig. 549.) 



Throughout the State ; scarce. April 26-Sep- 

 tember 28. Occurs on wild morning-glory and sweet potato vines. 



2278 (7097a). Cassida ateipes Lee. Col. of Kan., 1859, 28. 



Smaller and less broadly oval than ni gripes. Color (after death) dull 

 yellow, the elytra each with a small, round black spot near middle of disk 

 and usually two oblong ones on sides. Thorax shorter and proportionally 

 wider than in rtigripes, the hind angles much less rounded than there. Ely- 

 tra as in riigripes except that the sides on basal half are less abruptly de- 

 clivous or sloping ; intervals finely alutaceous. Length- 5-5.5 mm. 



Taken in small numbers by TVolcott near Pine and Millers, Lake 

 County. May 21-May 30. Described from Long's Peak. Listed as 

 a variety of nigripes, but in my opinion distinct. 



*2270 (7008). Cassida bivittata Say. Journ. Phil. Acad. Nat. Sci., Y, 1S26, 

 205; ibid. II. 341. 



Oval, convex. Thorax yellowish, with 

 a large triangular brownish-red space at 

 base ; elytra dull yellow, with the suture 

 and two stripes on each, connected at apex, 

 black or dark brown ; under surface and 

 legs piceous. Thorax coarsely, sparsely and 

 shallowly punctate. Elytra with regular 

 rows of rather coarse, deep punctures, 

 those of the submarginal row larger and black. Length 4.5-6 mm. (Fig. 550. ) 



Fig. 550. 2, Larva; 3, pupa; 4, beetle. 

 (After Riley.) 



