1132 



FAMILY LIU. — CHRYSOMELUVE. 



2093 ( ). Pachybkachys confusus Bowd,, Can. Ent, XLI, 1909, 320. 



Rather robust. Black with yellow markings ; front black with two yel- 

 low triangular spots between the eyes and an irregular quadrate spot be- 

 tween the antennae; thorax with front angles, narrow marginal line, a me- 

 dian line to middle and a small spot each side at base, yellow ; elytra with 

 basal line as in sticticus and numerous rounded, scattered raised spaces, 

 whitish ; under surface and legs black, spots on thighs and rings on tibiae 

 pale. Thorax with surface very smooth and even, the punctures and inter- 

 vals as described in key. Elytral punctures everywhere confused. Length 

 2.5-2.7 mm. 



Knox County; scarce. August 2. Swept from vegetation near 

 margin of cypress swamp. Described from Mississippi and Vir- 

 ginia. A member of the Austroriparian fauna. 



2094 (6695). Pachybbachys spumaeius Suffr., Linn. Ent., VII, 1853, 179. 

 Short, robust; subquadrate. Head black, with labrnm and two curved 



lines between the eyes brownish-yellow ; thorax and elytra brownish-yel- 

 low, irregularly clouded with markings formed by black punctures; the 

 black on thorax forming a vague Y-shaped figure on disk, with an irregular 

 space each side. Punctures of elytra in sinuous rows on apical half, else- 

 where much confused ; the ridges broken and irregular, the remnants in 

 part dull yellow. Length 3-3.5 mm. 



. Throughout the State; frequent. Jane 24-August 3. Occurs 

 on flowers of wild hydrangea and Jersey tea. 



XVII. Monachus Chev. 1834. (Gr., ''single.") 



Small, broadly oval and convex species, having the eyes strongly 

 emarginate; antennas rather long with joints 6-11 broader; scutel- 

 lum elongate, acutely triangular, not elevated behind; presternum 

 flat, broader than long, slightly rounded behind. The females have 

 the fifth ventral segment impressed with a large, circular, rather 

 deep fovea. Two of the five species occur in the State. 



KEY TO THE INDIANA SPECIES OF MONACHUS. 



a. Thorax smooth, opaque ; color nearly black. 2095. atee. 



aa. Thorax with punctures near the base ; color steel blue. 



2096. SAPONATUS. 



2095 (6702). Monachus ater Hald., Journ. Phil. Acad. Nat. Sci., I, 1849, 



264. 



Oval. Black, shining; thorax very dark blue; labrum and base of an- 

 tennae dull yellow. Elytral rows of punctures less distinct than in the next. 

 Length 2.5-3 mm. 



Throughout the State, frequent ; less so in the southern counties. 

 June 16-August 15. Occurs on foliage of milkweed and other 

 herbs. 



