1314 FAMILY LXI. MORDELLID.E. 



Detroit, there is an oblique stripe from the humerus to beyond the 

 middle. Smith regards the two species MS identical. 



2428 (7785). MORDELLA SEKVAL Say, Bost. Journ. Nat. Hist., I. 1835, 191; 



ibid. II, 662. 



Piceous brown, mottled with yellowish as mentioned in key; elytra with 

 a round black spot each side of seutellum, these bordered beneath with a 

 yellowish spot much larger than the others; under surface varied with ash- 

 gray and black. Length 44.5 mm. 



Putnam County; rare. July 4. Beaten from flowers of linden. 

 Say's type was from Indiana, probably Posey County. A prettily 

 marked and easily recognized species. 



2429 (77S7). MORDELLA OCTLATA Say. Host. Journ. Nat. Hist.. I. 1X.,5. I'.IO; 



ibid. II. 662. 



Antenna 1 , tibia? and tarsi dull red ; basal yellowish band of elytra ex- 

 tending in a point almost to middle of each; under surface varied with ash- 

 gray pubescence, the hind margin of each ventral segment reddish. Max- 

 illary palpi of male much larger than in female, and excavated at tip. 

 Length 5-6.5 mm. 



Southern half of State; scarce. Miiy 31-October 3. Occurs on 

 the greater horseweed, Ambrosia trificla L. 



24:30 (7789). MORDELLA TRILOBA Say, Journ. Phil. Acad. Nat. Sci., Ill, 1.824. 



276; ibid. II, 163. 



Body black. Thorax with a three-lobed black spot, margined with yel- 

 lowish pubescence; elytra with three undulating bands of dirty yellowish 

 pubescence, the basal one em-losing a humeral and scutellar black spot; un- 

 der surface rather thickly clothed with silvery gray hairs. Length :">-4 mm. 



Marion, Putnam and Posey counties; scarce. May 24 July 14. 

 Taken from flowers of mullein and wild hydrangea. 



.]/. findulata Mels., length 3 mm., is recorded from Pennsylvania 

 and Ohio. 



24:n (7792). MORDELLA DISCOIDEA Melsh.. I'roc. Phil. Acad. Nat. Sci., II, 



1843, 315. 



Black: antenna?, legs and top of head yellow; thorax yellow, with a 

 large triangular black spot reaching from ai>ex two-thirds to base; elytra 

 black, marked with yellow as follows: an oblique stripe extending from 

 humerns to a crossband before middle, a second band behind middle: apex, 

 margin and suture behind the second band. Length 2-o mm. (Fig. 576. 

 No. 9. ) 



Posey County; rare. June 11. A small and prettily marked 

 form, whose general range is southern. 



