1320 



FAMILY LXI. — MORDELLIDJE. 



a. 



Throughout the State; 

 common. May 5-August 2. 

 "The legs vary from pale 

 brownish-yellow to dull black, 

 the pubescence from brown- 

 ish-black to ash-gray, and the 

 head from deep black to dull 

 red." (Smith.) 



Fig. 578. a, Hind tibia and tarsus of M. grammka; b, elytron 

 of M. infima; c, elytron of M. andrece; d, elytron of M. gram- 

 mica. 



Gkoup D. 



In this group the hind 

 tibiae bear two parallel ridges, the upper one much longer and ex- 

 tending almost across the outer face of the tibia?. (Fig. 578, a.) 

 The following species have been taken or perhaps occur in Indiana : 



KEY TO INDIANA SPECIES OF GROUP D. 



a. First joint of hind tarsi with two, second with one oblique ridge. 



h. Elytra black with two yellow bands as in trlfasciata. amica. 

 hh. Entirely black ; pubescence grayish. picilabbis. 

 aa. First joint of hind tarsi with three or four, second with two oblique 

 ridges. 



c. First joint of hind tarsi with only three oblique ridges. ( Fig. 578, a. ) 

 d. Body yellow ; elytra yellow, with base, tips, suture and a large, ob- 

 long marginal spot black. 2445. gram mica. 

 dd. Elytra not as above. 



e. Elytra and entire body pale brownish-yellow. 244G. testacea. 

 ce. Elytra in part or wholly black or piceous. 



/. Elytra pale reddish-brown with the suture and margin black: 

 body black. 2447. vaeians. 



//. Elytra without distinct markings. 



g. Thorax wholly reddish-brown; elytra with reddish humeral 

 spot- semiusta. 

 00- Thorax black or piceous ; elytra without humeral spot. 



//. Head in part or wholly reddish ; front and middle legs 

 pale reddish-yellow. 

 i. Elytra with sage-green pubescence; front of head only 

 reddish yellow. delicatula. 

 U. Elytra with brownish-yellow pubescence; head wholly 

 reddish-brown. buficeps. 

 hh. Body and legs entirely black. 2448. nigbicans. 



ce. First joint of hind tarsi with four oblique ridges (Fig. 579, a) ; pic- 

 eous, clothed with fine silvery pubescence. splendens. 



M. arnica Lec., 2.5 mm., and M. pieilabris Helm., 2 mm. in length, 

 have been recorded from Cincinnati; the latter also from Illinois. 



