THE LONG -HORNED WOOD-BORING BEETLES, 



1001 



2010 (6492). Mecas pergeata Say, Journ. Phil. Acad. Nat. Sci., III, 1824, 

 408 ; ibid. II, 190. 



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

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

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

 gray hairs; femora reddish; antennae 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 8-10 mm. 



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

 July 10. Swept from low herbage along roadsides. Resembles 

 Saperda concolor, but readily distinguished by generic characters, 

 paler suture and reddish femora. 



LXX. Oberea Muls. 1839. (A proper name.) 



Very slender elongate species, having the tarsal claws broadly 

 toothed ; eyes not divided ; middle tibiae sinuate on outer edge ; tho- 

 rax without tubercles. The females have the last ventral segment 

 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 or two others probably occur. 



KEY TO SPECIES OF OBEREA. 



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



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



ant 2011. SCHAUMII. 



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

 of female feebly protuberant. 

 a Elytra truncate at tips. 



d. Color entirely black except the thorax. 2012. bimaculata. 



del. Legs, elytra and abdomen usually in part yellow. 



2013. TRIPUXCTATA. 



cc. Elytra rounded at tips ; abdomen red. elytra black. 



2014. OCELLATA. 



an. Thorax without callosities. 



c. Elytra not pubescent: pale dull yellow with a fuscous stripe on sides. 



GRACILIS. 



ce. Elytra closely clothed with prostrate pubescence; pale red, antennse 

 and elytra black. 2 015. ruficollis. 



2011 (6498). Oberea schaumii Lee. Journ. Phil. Acad. Nat. Sci. II 1852 

 153. 



Elongate, robust for the genus. Color variable, usually pale, dull yel- 

 low ; elytra, antenna? and tarsi often nearly black. Thorax with four round, 

 black, smooth spots arranged in a curved line ; in the darker specimens the 



