1172 



PA.MILY LIII. CIIRYS0MELID.1?. 



c. Hc'itT and legs in iJiirt iiiceuus; elytra black. atbipennis. 



re. Ik-ad and legs ijale; elytra green or yellow. 2170. lonqicoenis. 



aa. Tibite not cariuate along tbo outer edge; elytra yellow witb black 



stripes. 2171. vittata. 



21(i!) ((;'-Sl). DiABKOTiCA 12-Pi ACTATA Fabr., S.\sl. Ent.. ITi'.j, lua. 



Oblong-oval, narrower in front, moderately convex. I'ale greenish-yel- 

 low ; head and prosternum black ; elytra each with six black spots, as 

 shown in Pig. 511 ; antennae dark, with three basal joints pale, the second 

 and third together about as long as fourth; legs except base of femora 

 piceous. Thorax wider than long, surface smooth; disk convex with a 

 rather deep pit each side ut middle. Elytra sparsely and very finely punc- 

 tate. Length 6-7.5 mm. (Fig. 511.) 



Throughout the State; common. .Afay -SO-October 21. Oecur.s 

 on the foliagi' oF cucumber, melon and allied plants, but is much 

 less injurious to them th;in is I). vUtata; found also on goldenrod, 

 corn and many plants. The larva- feed on the roots of corn and 

 grasses. 



D. airi pell Ilia Say, entirely- black', or with thorax and abdomen 

 in part or wholly yel]o\\', length 4-5 mm., is said to occur from 

 Massachusetts to Kansas and Dakota, but no specimens have as yet 

 been noted in Indiana. 



2170 (tJSSS), DiAliHOTjcA j.oxoicoKNis Say. .lourn. Phil. Acad. Nat. Sci. 



Ill, 1824, 4(10; iliid. 



Fig. 512. X 10. (After Forbef.) 



era counties. June L!2-()ctol it T). 

 on the silk and leaves of ripening 

 sunflower and goiih'urod. 



II, 22;_;. 



Elongatc-olilong. Greenish or 

 greenisli-ycllow ; antennie, and 

 Sduielinirs the head and thorax, 

 >;ile reddish-brown. Thorax near- 

 ly quadrate, sides cuiTed in 

 front, slightly sinuate behind; 

 disk convex, smooth, with a rather 

 deep fove.-i each side. Antennjc 

 two-thirds the length of bod.y. 

 Klytra distinctly wider behind 

 the middle, surface vaguely sub- 

 sulcate, rather coarsely and clnsc- 

 iy punctate and with a raised line 

 from uudione two-thirds to ai>ex. 

 Length 5-5.5 mm. (Fig. 512.) 



Throughout the State, fre- 



(n;(nt; more so in the south- 



^Fost abundant in early autumn 



corn and on the flowers of wild 



