HHHHHHHHHHH 



NORTH OP MEXICO. 



379 



DIAPERIS, Geoff. 



Diaperis, Geoff., [ns, d, Envir, d. Paris, 1, p. 837. 



Two species of this well known genus occur in our fauna. 



]). hydni, Fab., El. 2, 585; Lap. Ann. So. Nat. 23, 835; maculata, Oliv., Eno. Moth. (1, 278. 



This species is remarkably uniform in its system of elytral coloration. The elytra are 

 orange color, with a sutural black stripe, not reaching the scutellum, becoming irregularly 

 wider toward the apex.; a, small black spot at the anterior third, not very distant from the 

 suture, and another smaller, near the margin ; a large irregular spot beginning at the 

 margin behind the middle, extending toward the suture without attaining it, and becom- 

 ing irregularly narrower. The head between the eyes is rufous. The legs entirely black. 



Length .24 inch. 



Abundant in the Middle and Eastern States, under bark or in fungi. 



D. ruflpes, oval, convex, shining; head entirely rufous; antennee black except the three basal joints, which are 

 rufous; thorax black, shining, finely and sparsely punctured. Elytra with distinct striae of moderate punctures, in- 

 terstices finely but very sparsely punctured; color black, with a, basal and median transverse irregular band of orange, 

 and an oval apical spot of the same color on each elytron; epipleuree black except base. The legs are brownish, ex- 

 cepting the anterior femora and coxse, which arc pale orange. 



Length .35 inch. 



Found in Arizona, at Camp Grant, under Cottonwood bark. 



The differences between this species and the European I), boleti, whim viewed from 

 above, are very slight, the system of coloration is identical, the differences being in the 

 entirely rufous head and the pale legs, and by the interstices between the elytral stria- 

 being much more sparsely punctured. The eyes are more closely approximate and the 

 frontal region of the head narrower in our species. 



HOPLOCEPHALA, Cast, et BrullL 



Hoplocephala, Oast, et lirullc, Ann. d. Se. Nat. 23, p. 338. 



Arrhenoplita, Kirby, Fauna Am. Bor., p. 235. 



This genus differs from Diaperis in having the first joint of tin; hind tarsi longer than 

 the second; and from the genera which follow, by the same joint being less than the two 

 following together. The epipleuree arc; abbreviated. 



Our species are four in number, of which two only arc; known to American entomolo- 



gists. 



Head of male with two horns. 



Thorax red, elytra green or blue, with metallic lustre. 

 Thorax and elytra similar in color. 

 (Color blue ; length 4 lines. 

 Color green; length If lines. 

 Head of male simply tuberculatc. 



(Thorax ferruginous, elytra black. 



viridipennis. 



c h a 1 y b e a ). 

 bicornis. 



■collaris). 



