Tire DOXG -HORNED WOOD-BORING BEETLE.'^. 1001 



2010 (6492). Mecas pebgbata Say. Joum. PhU. Acad. Nat. Sci., Ill, 1824, 

 40S : ibid. II. 190. 

 Elcngate, slender, cylindrical. Black, above sparsely clothed with dark 

 ash-gray hairs ; suture and margins of elytra more densely and conspicuous- 

 ly clothed with wliitish pubescence ; under surface thickly clothed with pale 

 gray hairs; femora reddish; antennse annulate. Thorax with two round 

 black spots placed obliquely on each side of median line and another be- 

 hind them on the line; surface, as well as that of elytra, rather coarsely 

 and sparsely punctured. Length S-10 mm. 



Knox, Dubois. Spencer and Pcsey counties; scarce. 'May 24- 

 Julv 10. Sweiit from low herbage along roadsides. Resembles 

 Saperda cancoloy. but readily distinguished l)y generic characters, 

 paler suture and reddish femora. 



LXX. Oberea ]\Iu1s. l-^oO (A proper name.) 



Very slender elongate species, ha^dng the tarsal claws broadly 

 tciothed ; e\"es not divided ; middle tibiie sinuate on outer edge ; tho- 

 rax without tubercles. The females have the last ventral s^ment 

 impressed lengthwise and feebly emarginate and the last dorsal 

 (pygidium) sometimes projecting in an obtuse conical protuber- 

 ance. Five species and one variety have been taken in the State. 

 and one m- two others probably occur. 



KEY TO SPECIES OF OBEBEA. 



a. Thorax marked with small, rounded, black elevations or callosities. 

 &. Thorax with four callosities ; pygidium of female strongly protuber- 

 ant. 2011. scHArsTn. 

 66. Thorax with two callosities and often a third spot black; pygidium 

 of female feebly protuberant 

 e. Elytra truncate at tips. 



d. (''olor entirely black exc-ept the thorax. 2032. bimacul.\ta. 



dd. Leff<. elytra and abdomen usually in part yellow. 



2013. TRIPUNc TATA. 



cc. Elj-tra rounded at tips: abilcjmen red. elytra Mack. 



2014. OCELLATA. 



(/.(. Thorax witliout callosities. 



■ . Elytra ii"t pubescent; pale dull yellow with a fuscous stripe on sides. 



GR-4CILIS. 



<('. Elytra el'isel.v clothed with pii«trate pnliescenee; pale reil, antenna; 

 and elytra black. 201.5. ruficuli-is. 



I'oil ((Vl;i^i- Oberea s( hat mii T.ec.. Jouni. Phil. .\r:iil. Nat. S.i.. II. ^^."|J. 



153. 



Elongate, robust for the -enus. d'olor variable, usually pale, dull yel- 



kiw; el.v"tra, antenuie and tarsi often nearly black. Thorax with four round. 



lilaek. smooth spot.s arrangeil in a curved line; in the darker specimens the 



