794 



FAMILY XXXIX. — BUPRESTIDJE. 



1508 (4692). Acm^eodera oenata Fab., Syst. Ent, 1798, 220. 



Robust, subcylindrical, moderately depressed. Bluish-black, sparsely 

 clothed with erect black hairs, each elytron with usually six or eight irregu- 

 lar small yellow spots on the sides. Thorax twice as wide as long, apex 

 emarginate, base truncate; sides rapidly converging from behind the mid- 

 dle to apex; disk with distinct median triangular impression and oblique 

 lateral impression, the latter terminating in a pit at base; surface coarsely 

 and deeply punctured, more densely on sides. Elytra narrower at base than 

 thorax, gradually narrowing from base, more rapidly on apical third ; mar- 

 gins serrulate ; disk with coarsely punctured stria? ; intervals flat, each with 

 a single row of punctures. Length 8.5-11 mm. 



Knox County; rare. June 24. Probably occurs sparingly 

 throughout the southern half of the State. 



1509 (4707). Acm^eodera tubulus Fab., Syst. Eleut, II, 1801, 200. 

 Subcylindrical, convex. Black bronzed, with sparsely placed short erect 



whitish hair ; elytra each with a dorsal row of four or five, and a marginal 

 row of three or four small yellow spots, these rarely connected to form an 

 irregular stripe. Head densely punctured, front feebly impressed. Thorax 

 convex, nearly twice as wide as long, sides curved and widest in front of 

 base; disk with three small basal fovea?, coarsely and densely punctured. 

 Elytra as wide at base as thorax, gradually narrowed and finely serrate on 

 apical third; stria? with rather coarse punctures; intervals coarsely punc- 

 tate. Length 5-7.5 mm. 



Throughout the State : common. April 13— June 24. Occurs es- 

 pecially on the flowers of the wild cranesbill, Geranium maculatum 

 L., the red haw, Crataegus, and other low herbs and shrubs. Mating 

 May 27. Listed as A. culta Web. 



XL PtosimaSoI. 1833. (Gr., "to fall down.") 



The members of this genus are readily distinguished from Acmce- 

 odera, which they resemble in form, by the presence of a distinct 

 seutellum. One of the two known species occurs in Indiana. 



1510 (4713). Ptostma gibbicollts Say, Journ. Phil. Acad. Nat. Sci., Ill, 



1823, 161 ; ibid. II, 104, 591. 

 Subcylindrical, robust. Bluish-black, shining, finely and sparsely pu- 

 bescent. Elytra each with a large oblong spot on side, reaching from base 

 to beyond middle and a smaller transverse one on apical third, bright yel- 

 low. Front concave. Thorax convex, with an obtuse subapical elevation 

 each side, sides strongly deflexed, base truncate ; surface rather densely and 

 coarsely punctate. Elytra without stria?, margin sinuate, serrate on apical 

 third, disk rather finely and sparsely punctate. Length 6-7.5 mm. 



Marion and Vermillion counties southward; frequent. May 11- 

 July 22. Beaten from foliage of red bud, Ccrcis canadensis L., in 

 the wood of which the larvre bores ; also occurs frequently on sassa- 

 fras. A prettily marked species. 



