1 305 



THE (EDEMERID BEETLES. 



narrower than elytra, the former bnt slightly narrowed 

 The middle coxae are very prominent; thorax without sharp edge 

 at rides its lateral suture beneath wanting; elytra somewhat 

 ! f in texture and either smooth or with fine punctures and silky 

 hS S are found mostly on flowers or foliage, sometimes » 

 erTvices o on the ground near water. The larv, live for the most 

 nart in decaying wood and are not of much economic importance. 

 The name of" the family is derived from that of the ; typical genus 

 (Edzmera, which is the Greek of two words meaning swollen and 



"^f'.'adition to the characters mentioned, the members of the 

 fanflly have the palpi 4-jointed, the last Joint f ^ed ; head s^igh ly 

 inclined the front somewhat prolonged; antenna; 11- - rarely U 

 oinTed nearly Aliform; elytra covering the abdomen whmhh^ ^ 

 free ventral segments wdth a sixth sometimes visible in the males, 

 nl ^2 lar ,, conical, contiguous, the -^ies widely open h. 

 bind; tarsi with the next to last joint dilated and .tan* « «*J 

 dense brush of hairs beneath; tarsal claws usually simple, rarely 



t0 t JrinXal papers treating of the North American species are 



as follows : . a J5 



ie Co»f<, -"Synopsis of the CEdemerid^of the United States, 



in Proc Phil. Acad. Nat Sci., VII, 1854, 20-22. 

 LeConte.-" Synoptic Tables of Copidita and Oxacis, ,n New 



Sn N Am. Col., I, 1866, 164-166. 

 Horn -'"The CEdemeridae of Boreal America," in Proc. Califor- 

 nia Acad. Sci., VI, 1896, 382-421. . 

 W^^- ' The (Edemerhte and Cephalonte of Ontario and 



Quebec," in Can. Put., XXX, 1893. 149-152. 

 Horn, in his paper above cited, recognized 5C , specn* ^fron 

 America These he distributes among 13 genera. Of these but five 

 ^ belonging to four genera, have been taken m the State, and 

 a representative of another may occur. 



KEY TO INDIANA GENERA OF CEDEMERIDiE. 



a. Next to last Joint of tarsi narrowly allatea ; lengtU less 

 aa . N^t^nt « tarsi Uro.mly dilatea; *** usually .ore tl.aa 



„. S «*. witt, one spur; color a^ve yellowisl, elytra «^ 

 black; antennae of male 12-jointed. v 



.« 4. „ cni1 rr Rntennse in both sexes ll-iomted. 

 hi). Front tibise with two spins, antenna 



c. Both mandibles bifid at tip. 



