1324 



FAMILY LXI. — MORDELLID/E. 



thorax bright yellow ; elytra densely clothed with yellow pubescence. Length 

 2.5-3 mm. 



Fig. 580. o, Hind tibia and tarsus of M. scalaris; 

 b, elytron of same: c, elytron of M. pubescens; d, ely- 

 tron of M. bihumata. (After Smith.) 



Lake County; rare. 

 September 22. Although 

 Smith places divisa as a 

 synonym of marginalis,yet 

 the specimen at hand is 

 very distinct by the much 

 brighter yellow of head 

 ^ and legs and the character 

 of the pubescence. 



M. cequalis Smith, 

 length 5 mm., was de- 

 scribed from northern 

 Illinois. 



Group F. 



In this group the hind tibia- are marked with four to six short, 

 oblique ridges. (Pig. 580, a.) The following species have been 

 taken or perhaps occur in the State: 



KEY TO INDIANA SPECIES OF GROUP F. 



a. Hind tibiae with only, four ridges besides the subapical one. 



b. Fourth ridge very small or rudimentary; first joint of hind tarsi with 

 three, second with two oblique ridges. 

 c. Body black. 



(I Elytra with an undulated band before the middle and a large 

 oblong spot near tip, fuscous. (Fig. 5S0, 6.) scalaris. 

 del. Elytral markings of silken yellow, not fuscous, pubescence. 



e. Elytra with a curved band from humerus to suture, a cross- 

 band behind middle and another at tip of silken yellow pu- 

 bescence. (Fig. 580, c.) 2457. pubescens. 

 ee. Elytra with two oblique bands connected by a line near mar- 

 gin, and also the apex yellowish pubescent. 



2458. BIHAMATA. 



co. Body uniform brownish-yellow ; elytra with two very oblique bands 

 of silken yellow pubescence. 2459. liturata. 



lJh. Fourth ridge of hind tibiw distinct. 



f. First joint of hind tarsi with three, second with two oblique ridges ; 

 elytra fuscous, clothed with short, yellow pubescence. 



2460. FUSCATA. 



ff. First joint of hind tarsi with five ridges ; second joint with three 

 ridges, third with none. 

 h. Color reddish-brown. 2464. hoosieri. 



