1004 



FAMILY L. SCARAByEID^E. 



1869 (5939). Tkichius affinis Gory, Hon., 93. 



Form of piger but usually smaller. Head, thorax, body beneath and 

 legs greenish-black, shining; elytra of the same hue with the second and 

 fourth intervals often reddish-brown, the sides with whitish transverse 

 bars and velvety space as in piger; also frequently with a short whitish 

 bar next the suture just behind the scutellum. Pygidium with white space 

 on sides densely pubescent. Length 9-10 mm. 



Throughout the State; scarce. May 29-July 6. Occurs with 

 piger, which it closely resembles, but is more shining, with smaller 

 and less punctured thorax and much more sparsely punctured sec- 

 ond and fourth elytral intervals. 



1870 (5940). Trichius bibens Fab., Syst. Ent, 179S, 49. 



Oblong-oval. Head, thorax, body beneath and legs bright metallic 

 green; elytra reddish-brown, shining, usually with a strong greenish or 

 brassy lustre. Head densely punctured; thorax more coarsely but less 

 densely punctured, both rather thickly clothed with short, erect, yellowish 

 hairs. Elytra with shorter, sparser hairs and with the intervals very 

 nearly equal, the second and fourth more densely punctured than the 

 others. Pygidium with an oblong white space on each side. Under sur- 

 face and femora with long, white, silken hairs. Front tibise of male with a 

 slender, straight spur. Length 11-12 mm. 



Throughout the State ; scarce. May 27-October 15. Occurs es- 

 pecially on the flowers of different species of dogwood (Cornus). 

 Pupates beneath loose bark and flat stones. Taken in Marshall 

 County in October. A more robust species than either of the other 

 two. 



XLII. Valgus Scriba. 1790. (L., ''bow-legged.") 



Small brownish, strongly flattened species, having the hind 

 coxae widely separated ; elytra short, exposing two dorsal segments ; 

 body more or less covered with whitish scales instead of hairs. Two 

 of the three known species occur in the State. 



KEY TO INDIANA SPECIES OF VALGUS. 



a. Front tibiae with three or more slender, widely separated teeth on outer 

 side ; size smaller, not over 6 mm. ; color brown. 



1871. CANALICTJLATUS. 



aa. Front tibia? with five or six closely placed, stout, rounded teeth; size 

 larger, 6.5-7.5 mm. ; color usually piceous. 1872. squamigee. 



*1871 (5943). Valgus canaliculatus Fabr., Syst. Eleut, II, 1801, 132. 



Oval, flattened. Reddish-brown, feebly shining; sides of thorax, base, 

 middle and apex of elytra and pygidium sparsely clothed with yellowish 

 scales. Thorax longer than wide, narrowed in front, sides feebly curved; 

 margin denticulate nearly to base; surface with a deep median groove, 



