THE SHINING FUNGUS BEETLES. 493 



enlarged, foi-ming a loose, sloiulcr </lul>; sputelluni usually wanting 

 but when present Ijroaclly ti-iangular. Thirteen nominal species 

 from the United States are recognized by Casey. Of these six are 

 Imown from Indiana. 



KEY TO l.XDIA.N.V SPKCIK.S OF IS.HOI'ERA. 



I/. Sc-utelluiu not visible. 



b. I^iu-ger species,, not les-s tluiii 2 mm. in length. 



c. Sides of thora.x feebly and evenly curved when viewed from the 

 side; basal marginal stria of elytra entire. 

 d. Third antennal joint very long, slender, subequal to fourth ; ely- 

 tra sparsely but distinctiy isunctate. 943. concoixjk. 

 (Id. Third joint much shorter and thicker; form less broadly oval; 

 elytra smooth. 944. congener. 

 CO. Sides of thorax strongly bent downward behind the middle; basal 

 stria of elytra broadly interrupted ; third antennal joint long and 

 slender. 94.5. deflexa. 

 66. Smaller species, never much exceediiiii 1.5 mm. in length; narrowly 

 oval ; third antennal joint not longer than fourth. 

 e. Elytra not punctate. 



f. Length 1.6 mm. ; epiniera of raesosternum extending two-thirds 



to COXSe. SPECULIFEE. 



ff. Length not over 1.3 nun.: mesnstenial ejiiniera longer and nar- 

 rower. 946. APiCAUS. 

 <c. Elytra sparsely, coarsely and shallowly punctate. 



947. PUNCTIPENNIS. 



aa. Scutellum visible, very minute and transverse ; length less than 1.3 inm. 



ff. Hind angles of thorax normally acute; color reddish-brown to plc- 



eous. 94S. PicEA. 



gff. Hind angles of thorax obtusely truncate ; color deep black. nana. 



943 (2978). E.eoceka comcoloe Fab., Syst. Eleut, II, 1801. 576. 



Oblong-oval, broad, strongly convex. Black, high- 

 ly polished; legs, antennie and tips of elytra and ab- 

 domen reddlsh-piceous. Thorax three-fourths wider 

 than long, ape.x one-third as wide as base. Scutellum 

 wanting. Elytra barely as long as wide, scarcely 

 twice as long as thorax, broadly ti-uncate at apex ; 

 sparsely and coarsely punctate. Length 2.7 mm. (Fig. 

 175.) 



Throughout the State ; frequent. ^lareh 25- i -^^ ^ 

 Se],tember 2.5. Occurs on fungi. ^i^ „. ^ j^ ^^.^^^.^ 



U44 (98.54). B^ocera congener Casey, Ann. X. T. Acad. Sci., VII, 1893, 

 517. 

 Rather stout, oval. Black ; legs and antennae pale reddish-brown. An- 

 tenu;e shorter than head and thorax, third joint much shorter than second, 

 three-fourths the length of fourth. Thorax and elytra much as in concolor, 

 from which it differs chiefly by its smaller size and antennal structure. 

 Tvength 2 mm. 



