THE LEAF BEETLE*. 1121 



KEY TO INDIANA SPECIES OF CRYPTOCEPHALUS. 



(i. Elytra black, cadi with a humeral and apical reddish spot. 



h. Surface liuely pubescent above and beneath. 2OI54. ISASALIS. 



1>I>. Surface above glabrous and shining. 



c. Larger, 4-5 nun.: humeral spot of elytra usually extending nearly 

 or wholly across the base. 20(55. QUADRIMACULATI s. 



c<-. Smaller. 2.5-3.5 mm.: humeral spot oblong, a little wider behind. 



20(5(5. (Jl'ADKl 1M.KX. 



an. Elytra not black, or if so without distinct humeral and apical spots. 



(I. I'rosternum with an apical lobe or cusp, longer in male than in fe- 

 male. 

 c. Elytra with numerous spots. 



/. Thorax reddish: elytra each with seven spots. 



20G7. (MTTULATUS. 



/'/. Thorax yellow, with black or brown stripes; elytra with spots 

 more or less united to form bands. 2o;x. I.EUCOMELAS. 



cc. Elytra without distinct spots. 



//. Elytra yellow, each with two broad, oblique black or brown 

 stripes, one of these sometimes absent. 20(5'. >. VENUSTI s. 



////. Elytra black with sides and apical margin yellow. 



20(!!>a. var. (TNCTII'KNNIS. 



'///. I'r s'ernnm br. adly truncate in front in Ic.th sexes. 

 //. Thorax smooth or finely punctured. 



/. Elytra with three narrow, sometimes ill-defined, stripes. 



/'. Thorax densely punctured, marked with three brown stripes 



or spots: length 3.5-4.3 mm. 2070. TIUVITTATUS. 



././'. Thorax sparsely punctured, usually without spots; length 3- 



3.5 mm. IXSKRTUS. 



//'. Elytra with spots or cross-bands. 



A\ Larger. 4-7 mm. ; elytra pale yellow, with three interrupted 

 brown bauds. 2071. MUTABILIS. 



A' A'. Smaller, 34.2 mm.; elytra brown with yellow spots. 



2072. BADIUS. 

 lili. Thorax very coarsely punctured. 



/. I Hill yellow; elytra with three broad, ill-defined reddish bands; 

 larger, 3-4.5 mm. 2073. TINCTUS. 



//. Dull reddish-yellow: elytra with dusky suture; smaller, 2 mm. 



STRIATULUS. 



2(Mi4 ;r.13). CRYPTOCEPHALUS BASALIS Suffr., Linnea. Entom.. VII, 1853, 54. 

 Kobust. cylindrical. Black, shining; elytra with a red spot on hu- 

 merus which extends across the base and along the sides to middle and 

 another on apex. Thorax finely and densely punctured. Elytra with ten 

 regular rows of large punctures. Hind margin of prosternum nearly trun- 

 cate. Length 5.5-<5.5 mm. 



Spencer County; rare. May 24. Beaten from oak shrubs. 

 Known heretofore only from Kansas and Texas. Listed as ('. tnii- 

 coreus Lee. Resembles quadrimaculatus, but larger and distin- 

 guished by tlie pubescence of elytra and the dense punctures of 

 thorax. 



