1200 ■ FAMILY LIII. ClIRYSOiVIELID.T*:. 



KEY TO INDIANA SPECIES OF HALTICA. 



a. Body above reddish-yellow, broadly oval; elytra smooth. 2220. kufa. 

 aa. Body above blue, bronze, yreeii or c-upreous, more or less metallic. 



b. Elytra with a longitudinal fold or costa along the sides; color darlv 

 blue. 2221. bimarginata. 



bh. Elytra without fold. 



c. Anteniue and legs pieeous, more or less metallic. 

 (/. Tliorax with a deep groove in front of base which extends cudi- 

 plvtvhj across the thorax. 

 ('. r.arger si)ecies, 4-5.5 mm. ; usually blue ; form robust ; thorax 

 very distinctly wider at base. 2222. chalybea. 



cc. Smaller, ;>-.'>.5 mm. ; color distinctly metallic brassy green, blue 

 or bronze; form more elongate; thorax scarcely wider at 

 base. 2223. ignita. 



(hi. Tlinrax witli a moderate, sometimes obsolete, groove near base, 

 which is never entii'e. 

 /. Humeral angles of elytra well marked, tlie umbone moderately 

 l)rominent with a depression behind it; transverse impres- 

 sion of thorax deep at middle, evanescent on sides. 

 //. Brilliant cupreous with violet or purplish reflections. 



carinata. 

 //(/. Itlue, head more prominent ; form more robust. vicaria. 



//. Humeral angle of elytra romided, the umbone feeble; trans- 

 verse impression of thorax faint. 

 h. Color brilliant coppery red; larger, more robust, more broad- 

 ly oval. 2224. cuprascens. 

 /(/(.Color greenish or brassy black; smaller, more slender, elon- 

 gate-oblong. 2225. .enescens. 

 cc. Antennjie and legs in great part reddish-yellow, in striking contrast 

 with the color of the upper surface. 

 /. Entire upper surface uniform in color and with metallic lustre. 

 j. Form oblong-oval, very convex; elytra scarcely alutaceous, the 

 punctures distinct on basal half. 2226. fusco.enea. 

 .//'. F<inn elongate-oblong, much less convex; elytra distinctly alu- 

 taceous, the punctures miinite and indistinct throughout. 



2227. KNABII. 



(■/. Head and thorax reddish-yellow, elytra metallic blue; thoracic 

 impression deep and entire. burgessi. 



2220 (6959). IIaltica rufa 111., Mag. fur Insect., VI, 1S07, 153. 



Oval, broader behind, moderately convex. Dull reddish- or orange-yel- 

 low above, piceous beneath ; antenna? and legs piceous, the hind femora paler 

 at base. Antenute half as long as body, third joint distinctly longer than 

 fourth. Thorax nearly twice as wide at base as long, feebly narrowed to 

 the front, margins very narrow ; ante-basal impression broad and shallow ; 

 surface sparsely and finely punctate. Elytra slightly wider at base than 

 thorax; umbone feeble, surface indistinctly and sparsely punctate. Length 

 4-5 mm. 



Lake and Dul)ois counties; rare. May 26-May 30. Beaten 

 from ash. 



