1182 



FAMILY LIU. — CHRYS0MELIM3. 



♦2181 (6932). CEdionychis vians 111., Mag. fur Insect.. VI, 1807, 83. 



Oblong-oval, moderately convex. Black, usually 

 with a slight violet or greenish lustre; thorax red- 

 dish-yellow with an inverted W-shaped black spot 

 (var. scripticolUs Say) or with a large transverse 

 discal spot, so that the margins only are pale ; tip 

 and sides of abdomen yellowish. Antennas about 

 half the length of body, third joint longer than 

 fourth. Thorax twice as wide at base as long, nar- 

 rowed in front, sides nearly straight, angles promi- 

 nent ; surface finely alutaceous, rather coarsely and 

 sparsely punctate. Elytra a little wider at base Fig " 516 ' x 5 " (0ri s inal ) 

 than thorax, surface alutaceous, closely and finely punctate. Length 4.5- 

 7 mm. (Fig. 516.) 



Throughout the State; frequent, February 14-October 6. Hi- 

 bernates with the preceding. 



2181a (6932a). CEdionychis vians sceipticollis Say, Journ. Phil. Acad. 

 Nat. Sci., IV, 1824, 84 ; ibid. II, 226. 

 Form and general appearance of vians. The head has a transverse 

 reddish spot between the eyes and another smaller one at the base of each 

 antenna; thorax with the black discal spot in the shape of an inverted W. 

 Elytral punctures distinctly coarser, deeper and more dense. Length 6- 

 7 mm. 



lake and Lawrence counties; scarce. May 14- June 12. Horn 

 makes this a synonym of vians, but the different punctuation of the 

 elytra is sufficient to make of it at least a distinct variety. 



2182 (6932c). CEdionychis concinna Fabr., Syst. Eleut., I, 1S01, 499. 

 Oblong-oval, moderately convex, feebly shining. Black, except the ely- 

 tra, which are dark blue or with a greenish tinge; tip and sides of abdo- 

 men yellowish. Antenna? not half the length of body, third joint longer 

 than fourth. Thorax twice as wide at base as long, sides straight or feebly 

 curved; base deeply sinuate near hind angles, which are prominent; surface 

 alutaceous, sparsely and rather coarsely punctate. Elytra alutaceous, sparsely 

 and very finely punctate. Length 6.5-7.5 mm. 



Lake County ; rare. May 21. Recorded before only from Geor- 

 gia and Texas. 



2183 (6935). CEdionychis thoracica Fabr.. Syst. Eleut., I, 1801, 498. 

 Broadly ovate, feebly convex. Head, thorax and under surface red- 

 dish-yellow ; thorax with seven black dots forming a curved front row and 

 three just behind them, these often more or less confluent ; elytra dark 

 blue with a narrow margin on basal half and epipleurae reddish-yellow ; an- 

 tennae and tarsi piceous, the former half as long as body, third and fourth 

 joints equal. Thorax slightly more than twice as wide as long, sides nearly 

 straight, angles acute; disk rather coarsely and closely punctate. Elytra 

 a little wider at base than thorax, surface rather coarsely and densely 

 punctate. Length 5.5-7 mm. 



Southern half of State: scarce. April 15-October 1. Often 

 taken on the wing-. 



