1128 



FAMILY LIII. CHRYSOMELIDJE. 



the thorax is usually wholly black except narrow pale margins. Thorax 

 closely and finely punctured. Rows of elytral punctures distinct on mid- 

 dle and sides, confused near suture. Length 2.5-3.5 mm. 

 Floyd County; rare. June 23. 



2079 (6662). Pachybbachys othoncs Say, Ainer. Ent., II, 1825, PI. 28; 



ibid. I, 66. 



Subcylindrical, robust. Black; head with labrum and three spots on 

 front yellow ; elytra with a common sutural stripe and two broad ones each 

 side, black; legs and ventral margins yellow; antennae dusky. Thorax 

 nearly three times wider than long, densely and rugosely punctured. Length 

 3.5-4 mm. 



Throughout the State; frequent, June 1-July 30. Taken by 

 sweeping herbage along roadsides. 



2080 ( ). Pachybbachys bivittatcs Say, Amer. Ent., I, 1824, 65; ibid. 



I, 65. 



Subcylindrical, robust. Head, thorax, legs and under 

 surface except meso- and meta thorax, reddish. Color of ely- 

 tra given in key ; pygidium and margins of last ventral seg- 

 ments yellow. Thorax sometimes with sides, median line 

 and basal spots yellow, its surface rather sparsely, coarsely 

 and deeply punctured. Length 3.5-5.5 mm. (Fig. 486.) 



Throughout the State ; frequent. May 16-June 16. 

 Occurs" on leaves of peppermint and grass in low. 

 Fig. 486. x a. moist localities. Listed as viduatus Fabr., which is a 

 (After wickham.) larger spec ies occurring in the Southern States. 



2081 (6671). Pachybbachys tbinotatus Melsh., Proc. Phil. Acad. Nat. 



Sci., Ill, 1847, 170. 



Short, subcylindrical, robust. Black, opaque ; head with two red spots 

 between the eyes; thorax with narrow front and side margins, two large 

 basal spots, and a median line from apex to near middle, reddish. Thorax 

 strongly convex, very evenly, deeply and rather coarsely punctured. Elytra 

 coarsely and very irregularly punctured. Length 4-5 mm. 



Putnam and Posey counties ; rare. June 24-July 9. Occurs on 

 flowers of Jersey tea. 



2082 (6672). Pachybeachys m -nig rum Melsh., loc. cat 

 Subcylindrical, robust. Black, opaque ; thorax with front and side mar- 

 gins, median line or spot near apex, and two basal spots, yellow ; elytra 

 with basal and apical margins, a space around humerus, two small smooth 

 spots near suture and a large submarginal space on sides, pale yellow: legs 

 spotted with yellow. Thorax rather densely and coarsely punctured. Ely- 

 tra with humeral umbone, prominent, smooth; rows of punctures very 

 irregular, excepting behind the middle. Length 3.5-4 mm. 



Lake and Laporte counties; rare. June 4- June 24. Taken by 

 sweeping herbage. The black markings on thorax resemble the 

 letter M. 



