1070 



FAMILY LII. CERAMBYCID^E. 



7ih. Antennae of male twice as long as body and very slender, with 

 fringed hairs beneath ; mesosternum narrow. 



LXIII. CEKATOGR APHIS. 



gg. Body above pubescent without intermixed erect hairs ; antennae 

 very long, with at least joints 3 and 4 densely fringed with short 

 hairs beneath. Acanthocinus. 



LVI. AcANTHODEREs Serv. 1835. (GTr., "spine + neck.") 



Medium-sized rather robust and somewhat flattened species, hav- 

 ing- the antennae not or very slightly longer than body, the first 

 joint shaped like an Indian club ; thorax tuber culate above and on 

 sides; femora much swollen towards the tips. The front tarsi of 

 male are broader than in female and fringed at the sides with rather 

 long hair. Two of the five known species have been taken in the 

 State, while a third may occur. 



KEY TO INDIANA SPECIES OF ACANTHODERES. 



a. Elytra each with a rather broad, oblique crossbar of white in front of 

 middle and with a feeble costa on middle third near suture. 



1977. QUADP*IGIBBUS. 



an. Elytra without distinct whitish crossbar or costa, but each with an in- 

 distinct M-shaped black mark behind the middle. 

 &. Base of elytra with an oblong, obtuse raised space at middle; smaller, 

 11-12 mm. 1978. decipiens. 



hi). Base of elytra regularly convex without raised space ; larger, 20 mm. 



morkisii. 



1977 (6404). Acanthodeees quadrigibbus Say, Bost. Journ. Nat. Hist., I, 

 1835, 195; ibid. II, 6G5. 



Elongate-oblong, rather robust. Dark brown, 

 rather thickly clothed with yellowish-brown pros- 

 trate pubescence ; elytra each with a large undu- 

 lated white crossbar near middle and a row of small 

 alternate brown and white spots along the suture ; 

 antennae annulate with gray. Thorax wider than 

 long ; surface, as well as that of elytra, rather fine- 

 ly, deeply and sparsely punctured. Elytra each with 

 two elevations near base. Length 10-13 mm. (Fig. 

 459. ) 



Clark and Posey counties ; scarce. July 

 5- July 22. The larvae live in oak, hickory, beech and hackberry. 



Fig. 459. (After Smith in Fifth 

 Rep. U. S. Ent.'Comm.) 



1978 (6406). Acanthodeees decipiens Hald., Trans. Amer. Phil. Soc, X, 

 1847, 45. 



More slender than the preceding. Dark brown, densely clothed with 

 short, prostrate, yellowish and gray pubescence in about equal proportions, 

 the gray on elytra in three obscure, oblique, subparallel bands. Thorax 



