]312 FAMILY LXI. — MORDELLID.E. 



(1. Deep black, fluely pubescent ; base of thorax broadly rouudeil at 



middle. 2423. mel.ena. 



dd. Dull black, pubescence brownish; base of thorax much less 



rounded. 2424. scutellaris. 



CT/. Elytra with distinct yellow or ash-gray spots or markings. 



e. Elytra each with four spots of yellowish pubescence, the one at 

 base broadly curved. 2425. octopunctata. 



cc. Elytra with stripes or with more than four spots. 



/. AntenuiB and front legs black ; thorax marked with ash-gi'ay 

 pubescence and large black spots. 

 g. Elytra with small silver gray spots, usually more or less 

 confluent. 2426. marginata. 



gg. Elytra with a narrow sutural line and an oblique stripe from 

 ;■ humei-us toward the middle, ash-gray. 2427. luxulata. 

 //. Antennaj and front legs dull yellow ; thorax and elytra speckled 

 with small, unequal yellowish spots ; elytra with an inter- 

 rupted band behind middle and the tips also yellowish pubes- 

 cent. 2428. serval. 

 00. Last joint of maxillary palpi either broadly hatchet-shaped or with 

 the sides equal. 

 It. Head and thorax black. 



/. Thorax sparsely clothed «ith yellowish pubescence, more densely 

 at base ; elytra with a broad basal band, enclosing ou each a 

 round black spot, and an interrupted band behind the middle 

 yellowish or ash-gray. 2420. ocul.\.ta. 



//. Thorax marked with ash-gray pubescence and large black spots. 

 j. Elytra with a broad basal band, including on each side two 

 siiots, and two oblique undulated bauds of yellowish or ash- 

 gray pubescence. 2430. triloba. 

 jj. Elytra with a broad basal band, including each side a very 

 large black spot, a band just behind middle and the tips ash- 

 Si'ay. ' unddi^vta. 

 hh. Head and thorax partly yellow; elytra with crossbands of black 

 and yellow. 2431. discoidea. 



M. borcnha Lee, length 3-4 mm., is said to occur in the "North- 

 ern States," and has been recorded from Cincinnati, 



2423 (777!)). Mordells. hel.ena Germ., Insect Sp. 

 Nov., 1S24, 109. 

 Deep velvety black ; pubescence at base of ely- 

 tra and on sides of under surface often more or 

 .less iridescent; base of pygidlum usually silvery 

 pubescent. Lengtli .^i-7 nun. (Fig. 574.) 



Throughout the State; frequent. June 9- 

 August 1. (Occurs especially on blossoms of 



Fig. 574. (After Smith.) ■" 



wild rose. 



