THE DAUKTJNn RKETI.ES. 



KEY TO INDIANA SIMXIKS OF XVIOI'INUS. 



12-49 



a. Body black, not nu'tallic 



b. Legs black. -^07. sai'kui.ioh.k.s. 



bh. Legs reddish-brown. ul i-ipes. 



aa. Hody brown with a brassy tinge. 2308. .enkscens. 



2807 (741o). Xylopims sapekiiioides Oliv., Ent.. ill, 17'.tr.. 11. 



Elongate, subparallel, convex. Black, feebly shining; antennse and 

 tarsi piceous. Thorax nearly square, slightly narrowed in front, sides fee- 

 bly curved; front angles rounded, hind ones acute; surface densely and 

 rather coarsely punctate, with an impression each side near the base. Ely- 

 tra elongate, parallel: strite coarsely and closely punctured; intervals mod- 

 erately convex, sparsely and Ihicly punclured. r>ength 12-lti nun. 



Tlirouiihout the State; frequent. June IG-Aiigiist 26. Occurs 

 especially beneath the bark of oak. 



X. rufipes Say, lensrth 11-10 nun., is said to have the same range 

 as sapcrdioichs and is probably only a variety of that species. 



2308 (7415). Xylopinus /enescens Lee, NeAV Sp. N. Am. Col., 1866, 120. 



Elongate-oval. Brownish or piceous, bronzed, shining. Thorax one- 

 third broader than long, sides broadly rounded; surface finely and rather 

 sparsely punctate and with an impression each side in front of base. Ely- 

 tra more dilated behind the middle than in the preceding, their stri« less 

 impressed and less strongly punctured. Tooth of front tibia? of male nnich 

 less prominent. Length 13-15 mm. 



Marion County; rare. May 24. Occurs in the "Middle and 

 Western States." 



VI. Tenebrio Linn. 1758. (Gr., "darkness.") 



Medium-sized black or brownish, elongate-oval or parallel, feebly 

 convex forms having the tarsi clothed with a coarser, less dense and 

 more rigid pubescence than in the preceding genera; antennas 

 gradually thicker toward the tip ; palpi and tarsi short. Four spe- 

 cies are known from the United States, all of which occur in In- 

 diana. 



KEY' TO SPECIES OF TENEBRIO. 



a. Tr;,cliantin of middle coxa' very distinct; form elongate, narrowly oval 

 or parallel. 

 h. Surface dull, opaque; length 14-17 mm, 2809. ousci'Ris. 



hb. Surface more or less shining. 



c. Thorax broader than hmg; length 13-16 mm. 2310. molitob. 



cc. Thorax nearly square; length 0-10 mm. 2:U1. castaneus. 



aa. Trochantin of middle coxte very small ; form more bro;idly oval ; length 



12-13 nun. 2312. tenebrioides. 



