G50 FAMII;V XXVI. NITIDULID.^. 



1253 (;>75S). Ii's coNFLUENTi's Say, Jourii. I'hil. Acatl. Nal. Sci., Ill, 182:5, 



195; ibkl. II. 125. 

 p]longate-obIoug. Head and thorax i)ieoous black ; elytra largely dull 

 yellow; the tips, an oblique humeral siiot. a small sjiot on each side of 

 seutellum, the suture at base, and a large discal si)Ot connected with the 

 margin, piceous. Surface coarsely punctured. Sexual characters as in 

 qua(lri(jiitt(itiis. Length 4.5-5 mm. 



IMarion, \^igo, Crawford and Posey connties; scnree. June 27- 

 December 8. 



Tribe VII. RHIZOPHAGINI. 



This ti'il)e is represented by a single genns of small, slender, 

 elongate species which live beneath bark. They have the antenna 

 lO-jointed with two-jointed club; presternum not prolonged at tip; 

 abdomen with the first and fifth segments long, the intermediate 

 three, short, equal; elytra truncate, exposing the last segment of 

 abdomen, and tarsi 4- and 5-,jointed in the males, 5- jointed in the 

 females. 



XXII. RmzoPHAGUs Herbst. 1793. (Gr., "root + eat.") 



Nine species of this genus are listed from the United States, 

 only two of which have l^een taken in the State, though three others 

 may occur. 



KEY TO INDIANA SPECIES OF RIIIZOPHAGt'S. 



(/. Thorax longer than wide. 



h. Elytral rows of punclun's distincliy impressed and reaching the ti])s; 

 length 3-3.5 mm. 1254. scALPTURATrs. 



hh. Elytral rows of punctures not impressed. 



c. Thorax lieneath nearly smooth; in male very decidedly narrowed 

 friim ;\\h:\ tn base, its sides nearly straight; length 4.5 mm. 



CYLINDRICUS. 



cc. 'i'h()i-;i.\ l)eneath disliiiclly imiictured. scarcely or not narroAved be- 

 hind in m:ile. sides feebly curved in both sexes; ])iceons, elytra 

 each with two red s])ots. 125."'(. isipunctati's. 



(Id. Tliorax as wide or wider tliaii l<ing: length 2.."i mm. 



<l. Elytra pitchy black. bemotus. 



(hi. Elytra eacli witli two o|pli(pic reddisli sixits. minutus. 



1254 (3705). KiiizoPHAGUs scalpturatus Mann., Bull. Mosc. II, 1852, 362. 

 Elongate, slender, subcylindrical. Dark reddish-ltrown or piceous. Tho- 

 rax longer than wide, sid(>s f(M>bly curved, gradually narrowed to liase; disk 

 at middle subdepressed. sparsely and coai'sely imncturcd. sides uKn-e finely 

 liniictnred. Elytra not wider tlinn apex <i|' llmrax. the stria' rattier coarsely 

 IMinctate; inter\a]s flat. Eengtli .".1 mm. 



