THE SAP-FEEDING BEETLES. b':'>7 



KKY TO INDIANA Sl'KC'IKS OK (.UOl I' A. 



it. I'PKCSS of abdomen between the hind coxa 1 broad, truncate. 



It. Sides of thorax moderately curved, gradually broader to base; form 



broadly oval, color yellow; length 4-4. "> mm. HORNH. 



/</*. Sides of thorax strongly curved, at. base narrowed or sinuate, hind 



angles acute; color dark reddish-brown. 



c. Form broadly oval; elytra narrower at tips. 1221. HELVOLA. 



<<. Form more oblong; elytra scarcely narrowed at tips. 1222. RUFA. 

 mi. 1'i'ocess of abdomen between the hind coxa 1 narrow, acute; metasternum 

 usually acutely notched behind for its reception; elytra truncate at 

 tip. 

 (I. Form obloiig-oval. 



*'. Middle tibia> of male strongly sinuate within, the inward prolonga- 

 tion of tip well marked. 



/. Thorax broadest at base, hind angles rectangular: color pale 

 reddish-yellow. 1223. ERICHSONII. 



/'/. Thorax slightly narrowed at base. 



.'/. Sides of thorax simply curved; hind angles not prominent; 



color uniform dull reddish-yellow. 1224. RUFIDA. 



////. Sides of thorax sinuate near hind angles, which are rather 



acute; color dull reddish-brown, the disk of elytra clouded 



with fuscous. 1225. CORTICINA. 



<'r. .Middle tibia 1 of male feebly sinuate, the tips merely thickened. 



//. Color reddish-yellow; sides of thorax obliquely narrower! near 

 the base. AVARA. 



////. Color pale yellow; sides of thorax slightly curved near the base. 

 /. Hind angles of thorax obtuse, margin not flattened. 



FULVESCENS. 



//. Hind angles acute and prominent, margins flattened and re- 

 flexed. 122(5. DIRYI. 

 <!</. Form elongate-parallel; color piceoiis. feebly shining; thorax sinuate 

 behind. 1227. TRUNCATELLA. 



E. Jiui'iiii Crotch is known from Grimsby, Canada, and probably 

 occui's in northern Indiana. 



1221 (3600). EPL-R.T;A IIEI.VOLA Erichs.. Germ. Zeits., IV. 1843, 273. 



Broadly oval. Dark reddish-brown, feebly shining, sparsely pubescent; 

 the margins often paler. Thorax rather more than twice as wide as 

 long, apex deeply emarginate ; sides strongly curved, slightly narrowing at 

 base, hind angles subacute; margin broadly flattened, slightly reflexed : 

 surface, as well as that of elytra, finely granulate, rather densely punctate. 

 Elytra oval, together a little longer than wide, margin reflexed. Length 

 3 mm. 



Steulx'ii. Laporte. Lawrence. Viii'o and Crawford counties, fre- 

 i|iien1 ; probably 1 liroii^lioiil Hie Stale. May 2(>-Au'iist 11. Oc- 

 curs in summer in decaying tieshy fuiiyi ; in spring at sap. 



