1024 



FAMll-V Till. — CEKAMBVCID.^<;. 



KEY TO INDIANA SPECIES OF EL.\.PHIDION. 



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

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

 &. Above glabrons with patches of white hair. irroratum. 



M. Above clothed irregnlarly with grayish pubescence. 



1S94. MUCRONATUM. 



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

 female more coarsely punctured, 

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

 spaces. 1805. incertum. 



cc. Thorax scarcely rounded on sides, nearly cylindrical. 



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



pubescent. 1896. villosum. 



(hi. P.ddy shining re(ldish-l)rown, scarcely pubescent; form very elon- 



o-ate. 1897. unicolor. 



F. irrorahon Linn., picoous, with patches of wliite hair, length 



10 linn., has 1)een taken in Illinois and Ohio. 



1S94 ((lOnC). P]LAPIIII)I0N MUCRONATUM 



Say, Journ. Phil. Acad. 



Nat. Sci.. III. 1824, 427 ; 



ibid. II, 201. 

 Elongate, slender, subcylindi'lcal. Dull 

 reddish-brown, irregularly clothed with 

 grayish-yellow pubescence. Antenna? with 

 joints 3-5 each with a distinct spine, that 

 of the third joint one-half or more the 

 len.gth of the fourth joint. Thorax nearly 

 cylindi'ical, 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 coun- 

 ties; scarce. Jnne 9-Angust 29. Oc- 

 curs on or ahout oak, hackberry, 

 beech, sugar niaplc and dogwood, in the wT)od of wdiich the larva? 

 bore. 



1895 (6058). Elapiiidion incertum Newni., Entomologist, 1840, 28. 



Elongate, subcylindrical, rather rol»ust. Dark reddish-brown, mottled 

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

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

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



Fig. 435. X 2i. (After Chittenden in Bull 

 No. 18, New Ser. U. S. Div. Ent.) 



