TIIK f'OMB-C'LAWKl) 15\KK BEKTLKS. 1 ■_*(!' 



V. MvcKTociiAinos Lntr. 1^21). ((}i-., " rmiLiiis lo ddi-lil in.") 



Sinjill oblong- hroaiiish species, usually liaviiiti' the humeri of 

 elytra 'lull red, aud the last joint of niaxillai-y |>al|»i a i-oluist ri^jhl- 

 anii'led triaiiiile. They feed (ni fuuui and oceur lieueath hai-k. The 

 outer covering is very brittle, hreakiiiu' easils when handled. Casey 

 recognized 22 species, seven of which ha\'e l)een taken in the State, 

 while several others doul)tless occur. 



KICY TO INDIANA SPIXIKS OK MVCKIlH UAKKS. 



«. Front cox;e soparnteU l)y ;i distiiicl prnsleni.il spine 



h. Elytra each witli ;i i^ale i-cdUisli spot en ImineiMis (ir iic.-ir hase. 



<: Klyti-a witliuiU distinct rows of inuiclures; tlinrax as wide <>r iicar- 

 Iv as w id( as llic liasc of clyli-a. 

 (/. llycs small, separated hy two to foiii' tinu's tlieii- wiiltii. 



r. rubesceni'e very short, sparse and iiiconsiiiciious ; form nar- 

 row and convex; two stria> eviih-nt near the suture. 



l.'3(;S. HAIJ)i;.MANl. 



cv. Pubescence normal ; form broader aud ucu-e depressed; sutural 



striie very faint. -•■''•■'•'• i katkhna. 



(Id. Kyes very lari.'e. separated by less than their own width: clytral 



lines impressed on inner half. l':!TO. m kcaloi's. 



cv. Elytra with distinct rows of rather lar-i' imnclurt's: tliorax at 



base narrower than the elytra. 



/. I'^lylra twice as lonu as wide: tliorax with tln-ee liasal imjires- 



sioiis. 1':;T1. fovkata. 



//. Elytra distinctly more than twice as loni; as wide; thorax with 



two basal impressions. 2371.'. tkxuis. 



hh. Elytra without jiale humeral spot. 



y. Thorax much narrower than elytra, but sli.i;htly wider than head. 



sparsely punctate. ouAdi.is. 



tj!/. Thorax scarcely narrower than elytra, nuich wider than head. 



coarsely and densely punctate. lu i-iri.s. 



ait. Front coxa> contiguous or separated by a very thin prosternal spine. 



7/. Elytra with a red humeral spot. 



/. Thorax narrowly and abruptly flattened at the sides. .\i ahoinata. 

 //. Thorax not tlatlened at the sides. 



;". Eyes i-ather small, separated by twice their width: Ibor.ix (•(pial 

 in width to elytra. -:'>"•■'•• raxoTAiA. 



/,/. Eyes larger, se])arated by slightly more than their width; tho- 

 rax narrower than elytra. -''>~^- longula. 

 /(/(. Elytra without humeral red spot; thorax coarsely, rather densely 

 punctured. 

 1-. Eyes separated l)y at least twice their width: .-olor ].iceous-brown 

 to black. 

 /. Thorax not Hattened at the sides: anteini:e. legs aud under sur- 

 face reddish-brown, the last two ventral segments paler. 



analis. 



[81—23402] ; 



