1028 PAMII,V lill.^ 



KEY TO SPECIES OF OBKIUM. 



ji. Head and tlioraxplceons, coarsely and closely punctate; elytra pale red- 

 dish-brown, very sparsely punctate. rubidum. 



Oft. Body uniformly reddish-yellow; thorax not closely punctate; elytra 

 more closely punctate. 1901. rdbrdm. 



1901 (0092). Obridm rubrum Newm., Ent. Mag., V, 1838, 393. 

 Elongate, subcylindrical. Pale reddish-yellow, shining. Head broader 



than thorax, the latter with an obtuse tubercle each side near middle. Ely- 

 tra rather coarsely punctate, each puncture bearing a yellowish hair. Fe- 

 mora rather strongly clubbed. Length 5.5-0.5 mm. 



Posey, Putnam and Crawford counties; scarce." June 24-June 

 28. Beaten from vegetation. 



Tribe III. STENOPTINI. 



In this tribe the front eoxal cavities are widely angulated on the 

 outer side, but entirely closed behind; abdomen normal in both 

 sexes; head extended forward, the front large and oblique; eyes 

 finely granulated and deeply emarginate; hind tarsi with first joint 

 twice as long as second ; legs and thorax sparsely clothed with long 

 flying hairs. Two genera, each represented in Indiana by a single 

 species, compose the tribe. 



KEY TO GENEE.V OF STENOPTINI. 



a. Elytra scarcely longer than thorax, their tips separated and rounded; 



raesostemum triangular and truncate. XX. Molorchus. 



aa. Elytra elongate, gradually awl-shaped and widely separated at apex; 



mesosternum broad, widely emarginate behind. XXI. Callimoxys. 



XX. MoLORCHUS Fab. 1792. (A mythological name.) 



1902 (GlOO). Moi.OECHu.s bimacllatus Say, Journ. Phil. Acad. Nat. Sci., 



Ill, 1S24, 42S ; ibid. II, 202. 



Elongate, subilepressed. Dull black, sparsely pubes- 

 cent with long grnyisli hairs. Elytra dull yellow, blackisli 

 at tip and margin ; anteun;i3 and legs reddish-brown. Tho- 

 rax subcylindrical, rounded at sides, much narrowed at 

 base, surface coarsely and rather densely punctate. Length 

 5-7 min. (Fig. 437.) 



Throughout the State, common; less so in the 



nortliern counties. April 12-J\Iay 27. Often 



abundant on the flowers of the red haw {Cra- 



(Hfermckh'lm.) ^'""''^- bating April 20 and May 27. Breeds in 



hickory, maple, ash and dogwood. 



