THE SAP- FEEDING BEETLES. 



645 



Franklin Connty ; scarce. May 1.3. Occurs on flowers of nettle 

 and other plants. 



Tribe IV. CYCHRAMINI. 



Rounded or oval convex species, living mostly in fungi and hav- 

 ing the thorax margined at base and covering the base of elytra, 

 which in turn cover the abdomen, so as to leave only the tip of the 

 terminal segment exposed; head more or less deflexed; labium dis- 

 tinct; prosternum more or less prolonged at apex. Four of the 

 six genera composing the tribe have been taken in the State. 



KEY TO INDIANA GENERA OF CYCHRAMINI. 



a. Mesosternum protuberant in front ; middle coxse widely separated. 

 6. Body glabrous; punctures of elytra in rows; prosternum prolonged, 

 broadly dilated at tip, covering entirely the inesosternum. 



XV. PSILOPYGA. 



J)b. Body pubescent; punctures of elytra confused; prosternum less pro- 

 longed, feebly dilated at tip, not covering entirely the mesosternum. 



XVI. Amphicrossus. 



aa. Mesostemum small, oblique, not protuberant in front ; middle coxae nar- 

 rowly separated. 

 c. Body glabrous; hind tarsi longer than the others. 



XVII. Pallodes. 



cc. Body pubescent; all the tarsi equal in length. 



XVIII. Cychramus. 



XV. Psilopyga Lec. 1853. 



Labrum prominent, deeply bilobed ; antennal club abrupt, oval, 

 three-jointed, the grooves deep, subocular; base of thorax with a 

 short truncate lobe ; scutellum large, broadly triangular ; elytra 

 truncate; front tarsi dilated. Males with a small additional seg- 

 ment. The genus Psylopyga is said by Dr. Sharp to be distinct 

 from Oxycnemus Er. 



1242 (3742). Psilopyga histrina Lec, Proc. Phil. Acad. Nat. Sci., VI, 

 1853, 287. 



Broadly oval, robust. Black, shining. Head coarse- 

 ly punctured. Thorax more than twice as wide as 

 long, narrowed in front, apex broadly emarginate; 

 base curved, sinuate each side of median lobe; disk 

 sparsely, rather finely punctured, with a double row 

 of larger punctures near the apex. Elytra as broad 

 as long, each with ten rows of rather coarse punc- 

 tures; intervals slightly convex, sparsely and irregu- 

 larly punctate. Length 5 mm. (Fig. 241a.) 



Montgomery County ; rare. July 4. Occurs Rg - 241a - (After Hom) 

 in the stink-horn fungus. 



