1152 



FAMII.Y LIII. CriRYSOMELID.T;. 



both base nud apex, yellow. Thorax nearly twice as wide as long, finely 

 and si)arsely punctate. Elytra with somewhat irregular rows of close-set 

 fine punctures. Length 4.5-").,^) nun. 



Lake ('()nnt>': Sf;H'e(\ ]May 5- June 24. 'I'akeii l)y sweeping 

 iiiaisli \('L;vla1 ion. 



XXXIV. LABn)OMKi{A Cliev. l<s:{4. (Gr., " foiveps + femnr.") 



The old li'enus, Dorijphora 111., was discarded by Linell in his 

 paper, Joe. cit., and the North American species were distrihiited 

 amonii' tliis and the next genus, the two heing separated only hy the 

 characters given in the generic key. To Liibidonura, as character- 

 ized, belongs only a single speci(^s and a western variety. 



*213r) (()7<sr)). LAiJiDONrKKA CLivieoLLis Kirhy, Faun. Bor. Aiuer., IV, 1837, 

 2V.\. 



(ha I. ciinvex. robust. I>ark blackish-blue; elytra 



riiige yellow with a large, black, cruciform connnon 



sjiiit in front of middle, each with a triiuigular spot 



beliiihl the humerus, and a V-shai)ed one near apex; 



\ these spots Sometimes in |»art or all cnntluent to form 



^^ tine nr two broad transverse bands. 'I'liniMx t iu'ee t imes 



as wide as long, sparsely and linely punctate. IOIyti"al 



!,<, punctures fine, arranged in irregular double rows. 



i,r,. Length S-12 mm. (Fig. 49(5.) 



Throughout the State; t're(|U('iit on the foli- 

 age of the connnon milkweed, AscJcpias siiriaca L. 'January 5-Au- 

 gust ■]. Hibernates heiieath logs i)ai'tly bnried in sand, mttllein 

 h:aves, etc. One of the largest and luost handsome of our Chryso- 

 iiielids. 



I'ifr. JIJO 



(if 111- Kiioliel ) 



XXXV. TjiopTiNOTAiiSA Stal. lsr)S. ((h-., "slender + tarsi.") 



Two of the 12 species recognized by Linell occur in Indiana, the 

 others being fonnd in the Wt'sterii and Southwestern States. One 

 of the two is the common injurious "C^olorado potato beetle" and 

 the other is very similar in appearance. 



KFA' TO INDIANA SPECIES OF EEPTINOTARSA. 



<i. Elytra with double rows of eonllueni ]iunctures. the suture and five 

 naiM'ow stripes on each black; ei)ipleura jiale. 2130. decemlineata. 

 (la. Elytra with single rows of regular punctures; each with five narrow 

 black striiies, the third .and fourth usujiUy united at base and apex. 



2137. JUNCTA. 



