1024 



FAMILY LII. — CERAMBYCIDiE. 



KEY TO INDIANA SPECIES OE ELAPHIDION. 



a. Antennae and elytra with long spines ; thighs spinose at tip ; thorax of 

 male and female similar with several small, smooth elevated spaces. 

 6. Above glabrous with patches of white hair. irroeatum. 

 66. Above clothed irregularly with grayish pubescence. 



1894. MUCRONATUM. 



aa. Antennal spines small ; thighs not spinose at tip ; thorax of male finely, 

 female more coarsely punctured. 

 o. Thorax rounded on sides, its disk with several smooth elevated 

 spaces. 1895. incertum. 



cc. Thorax scarcely rounded on sides, nearly cylindrical. 



d. Body with distinct mottled pubescence; legs densely punctured and 

 pubescent. 1896. villosum. 



dd. Body shining reddish-brown, scarcely pubescent; form very elon- 

 gate. 1897. UNICOLOR. 



E. irroratum Linn., piceous, with patches of white hair, length 

 19 mm., has been taken in Illinois and Ohio. 



1894 (605G). Elaphidion mucronatum 

 Say, Journ. Phil. Acad. 

 Nat. Sci., III, 1824. 427 ; 

 ibid. II, 201. 

 Elongate, slender, subcylindrical. Dull 

 reddish-brown, irregularly clothed with 

 grayish-yellow pubescence. Antennae with 

 joints 3-5 each with a distinct spine, that 

 of the third joint one-half or more the 

 length of the fourth joint. Thorax nearly 

 cylindrical, sides feebly rounded; disk 

 coarsely and sparsely punctured, with the 

 median line and two small rounded spaces 

 each side smooth and slightly elevated. 

 Elytra irregularly and somewhat coarsely 

 punctured, the tips each with two spines, 

 the outer one the longer. Length 15-19 mm. 

 (Fig. 435.) 



Knox, Posey and Crawford conn- 

 ties ; scarce. June 9-August 29. Oc- 

 curs on or about oak, hackberry, 

 sugar maple and dogwood, in the wood of which the larvae 



Fig. 435. 

 No. 



2\. (After Chittenden in Bull. 

 New Ser. U. S. Div. Ent.) 



beech, 

 bore. 



1895 (6058.). Elaphidion incertum Xewin.. Entomologist, 1840, 28. 



Elongate, subcylindrical, rather robust. Dark reddish-brown, mottled 

 with small patches of grayish-brown pubescence. Antennae with joints 3-5 

 armed with very short spines. Thorax subglobose, wider than long, sides 

 rounded; median line smooth, polished, widest behind the middle and with 



