'inrK T.ONd -HORNED WOOD-BORTNO RKl^TTiES. 1001 



2010 (C,402). Mix'AS PERGKATA Sa.v. Joiivn. Pliil. Acad. Nat. Sci.. Ill, 1824, 



408; ibid. IT, 190. 

 Eloiisialo. sliMulor. cyHiulrical. l>la<'l<, above sparsely elollied with dark 

 asli-irray liairs; suture and margins of elytra more densely and conspicuous- 

 ly clothed with whitish i)ubosccnce ; under surface thickly clothed with ]»ale 

 gray liairs; femora rixldish ; anteunjie annulate. Thora.x 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. liength S-10 mm. 



Knox, Dvibois, Fiponcci" and Posey counties; scarce. May 24- 

 July 10. Swe^it tVoin low herbaaje aloii^ i-oadsides. Reseinl)les 

 Saperda concolor, \n\i readily distinsi'iiislicd l)y ^(^nerie characters, 

 paler suture and reddish femora. 



LXX. Obekea IMuls. 1839. ( A ])i-()|)cr natno.) 



Vei-y slender olono-ate si)ecies, havinjj; the tarsal claws broadly 

 toothed: o\'es not divided; middle til)ia' sinuate on outer edge; tho- 

 rax without tubercles. Tlu> I'tMiiales liavo the last ventral segment 

 impressed lengthwise and feebly emarginnt(» and the last dorsal 

 (pygidium) sometimes jn'ojecting in an obtuse^ conical protuber- 

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

 and one oi" two others probably occur. 



KEY TO SPECIES OF OBEREA. 



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

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

 ant. 2011. SCHAt'i[lI. 



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

 of female feebly iirotuberant. 

 c. Filytra truncate at tips. 



d. Oolor entirely black except the thorax. 2012. nurAcrTr-ATA. 



(hj. liCgs, elytra and abdomen usu;illy in part yellow. 



201. *>. TRTPITNCTATA. 



cc. Elytr.M rounded at tiiis; abdomen I'ed. elytr.-i lilack. 



2014. OCET.r..\TA. 



ait. Thorax without c;illosities. 



c. I']lytra not jiubescent; pale dull yellow with a fuscous stripe on sides. 



GUACU.IS. 



cr. Elytra closely clothed with i)rostr;ite imbescence ; pale red, :uiteim;e 

 ;ind elytra black. 2015. rificoi.eis. 



2011 (tUlisi. OiiEREA sciiAiMH Lec. .Toum. Phil. .\cad. Nat. Sci.. 11. lS.-)2. 



153. 

 Elongate. roI)ust for the genus. Color variable. usu;illy p.ale. dull yel- 

 low; elytra, antemune and tai'si often ne;ii-ly black. Thorax with four round, 

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



