THE LEAP T!F;ETLES. 



1103 



Fig. 476. X i. (Original.) 



2(.>2S (0529). DoNACiA piscatrix Lac, Mem. Soe. Liege, III, 1845, 113. 



Elongate, ratlier slender, subeouvex. Color 

 above vari.-ible. bronze, green or brownish-yel- 

 low, strongly shining; grayish pubescent he- 

 neath; antemite and legs reddish-yellow, femora 

 in part darker. Antennfe stouter than in the 

 two precedln.i;, the second joint about half the 

 length of third. Tliorax quadrate, sides each 

 with two rounded tubercles, the front one more 

 prominent; disk finely alutaceous, sparsely, fine- 

 ly and shallowly punctate. Elytral punctures 

 rather coarse; Intervals nearly flat, finely, trans- 

 versely rugose. Length (i.5-10 mm. (Fig. 476.) 



Throughout the State; common. 'Slay 

 15 -August 20. Occurs mainly on the 

 Ho\\-ers and foliage of the yellow water-lily, 

 rarely on those of the white. The stouter 

 antennae, more distinct tubercles of thorax and less squarely trun- 

 cate tips of elytra readily distinguish this from palnxila, with which 

 it is most apt to be confused. 



20ii'.» ( ). DoNACiA crETicoLLis Knab, Proc. But. Soc. Wash., VII, 



1906, 122. 



Rather slender, convex, male; broader, subdepressed, female. Red- 

 dish- or brownish-yellow ; head and basal joint of antennae greenish ; under 

 surface, tibife and tarsi with a greenish tinge. Head with a deep median 

 groove. Thorax one-half broader than long, sides straight, without tul)er- 

 cles ; disk very finely wrinkled, confusedly punctate and with a deep me- 

 dian groove reaching to basal fourth. Elytra with a shallow oblique de- 

 pression just in front of. and another behind, middle; striae deeply, closely 

 and coarsely punctate; intervals finely wrinkled. Length 9-10 mm. 



Laporte, Marshall and Whitley counties; scarce. July 15-Au- 

 gust 15. Knab's types were from Illinois and Indiana. Occurs on 

 bullrushes. 



20.30 ( ). DONACIA MEGACORNIS Sp. UOV. 



Elongate, slender. Cupreous, bronzed ; antennte and legs reddish-brown. 

 Antennae much stouter than in snhfUi.s. half the length of body, the second 

 and third joints nearly equal. Thorax longer than wide, feebly tubercu- 

 late on the sides; disk with sides rugose, with fine punctures between the 

 wrinkles; median line distinct on basal half. Elytra each with two dis- 

 tinct inijiressions, the hind one with an elongate extension reaching nearly 

 to apex; punctures rather co.-irse, obloii.tc ; intervals flat, densely rugose, 

 r.ength 7.5 mm. 



Lake County; rare. IMay 2'^. 

 20."1 (6536). DONACIA suBTiLis Kunz, Mon. Neu. Schrift. Ges. Ilalle, II, 

 ISIS. 14. 



Elongate, slender, subconvex. Color lirassy bronzed to purplish-black; 

 rai'cly blnish. Shining; antenn;c and legs reddish-brown to piceous. Tho- 



[70—23402] 



