THE MKTALI.IO \V()()n-i;()miNG BEETLES. 



781 



spcMMCs ;nv known friuii llir I'liitcd Slnlcs. (ivc of wliicli li.-ivc liccn 

 tnkcii in Iii(li:ni;i. while one othci' |t('fli;ii>s (m'cui's. 



KKY TO INDIANA SPKCIE.S <)!•' ItU'KlU'A. 



(/. Elytra umch prolont^jod at apex. 



/*. Tips of olylra ontiri'. ]-i>l-'5 divakuata. 



bb. Tips of elytra bidontato. ploionata. 



(Id. Elytra not nuicli prolonged at apex, the tips bidentate. 



r. Thorax and elytra uniforin without elevated smooth ridges. 



(/. Thorax narrowed from the l)ase; iinpr(>ssions of thorax and elytra 

 distinct. 1^84. obscuka. 



(Id. Thorax narrowed from the middle: impressions indistinct. 



1485. i.nunA. 

 cc. Thorax and elytra nneveii, tlie latter with short elevated siiioolh 

 ridges, 

 c. Front of head with a transverse carina; middle tibi;e of male den- 

 tate. 14SG. SPHiriA. 

 ee. Front not carinate; middle tibije of male simple. 



"^ 14S7. ASPEiiATA. 



1483 (4577). Dicekca divaricata Say, .Jonrn. I'liil. Acad. Nat. Sci., Ill, 

 182.3, 103; ibid. II. 105, 5U0. 

 Elougate-oval. Above brassy brown or grayish-cu- 

 preous; beneath cupreous. Thorax nearly twice as wide 

 as long, side margins subangulate at middle ; disk with 

 a median impressed line and an indentation before the 

 scutellum, its sides roughly, coarsely and unevenly punc- 

 tured. Elytra with tips much prolonged and usually 

 somewhat divei'geut ; surface substriate, coarsely and 

 irregularly punctate and with numerous raisetl reticulate 

 smooth spaces. Length 16-21 mm. (Fig. 295.) 



FIk. 29o. (After I'ack- 



Throiiffhoiit the State; scarce. May 24:-June aid in Fifth Rep. u. s. 

 27. The larv« burrow in the wood of beech and 

 cherry and the beetles are usually found on the trunks or branches 

 of the.se trees, though sometimes on apple, niaph^ and oak, all of 

 which have light colored bark, thus serving to protect the basking 

 lieetle from its enemies. One specimen Avas taken on June 12 from 

 the clutches of a large bnmble-bee-like Hy, Mdllophora sp. ? 



D. caudata Lee. is a small variety, more convex in form and 

 having the thorax feebly narrowed from base to apex instead of 

 widest at middle. A single specimen was taken from the Howei-s of 

 willow near Pine. Lake County, May 30. 



D. pugionaia Germ.,- bronzed-cupreous, length 11-13.5 nun., is 

 known from Pennsylvania and ^laryland. 



