THE LONG-HORNED WOOD-BORING BEETLKS. 1018 



Montgomery County; rare. August 2b'. Taken from hemlock 

 at Bloomingdale Glens. 



Subfamily II. CERAMBYCINAE. 



The only characters available for separating this subfamily are 

 those given in the key, vi/., thorax not margined; labrnm separate 

 from the front; front tibia- not obliquely suleate; palpi never 

 acute at tip ; antenna- always pubescent. The subfamily is of great 

 extent, embracing many genera which are very difficult to separate 

 in easily understood terms. The first distinguishing character 

 used, viz., the "enveloping of the base of the antenna- by the eyes," 

 is apt to cause trouble if not properly understood. To make it 

 plain, the antenna:- should be extended forward from the head. In 

 this position it will be seen that in those genera where the "base of 

 the antenna- is partially enveloped by the eyes," a. line passing 

 from the front or inner border of the upper lobe of the eye to a 

 corresponding spot on the lower lobe will pass through the antenna! 

 socket, whereas in the genera where "not enveloped," this line 

 would run behind the socket. All genera in which the eyes are 

 entire are of course "not enveloped," while those in w r hich the eyes 

 are emarginate may be partially enveloped or not. The subfamily 

 is first separated into four Divisions, all of which are represented 

 in Indiana, and these in turn into tribes and genera. 



KEY TO DIVISIONS OF CEKAMBYCINJE. 



ft. Base of antemiH? not enveloped hy the eyes. 



1). Front coxie transverse, not prominent ; antenna? with second joint 

 rather large, one-third or more the length of third; head inserted 

 hi Hie thorax. Division I. CALLIIHOIDKS. p. loi:*>. 



l>b. Front cox:e conical (globose in DiNtcnin), prominent; second joint 

 of antenna- small; head usually attached to thorax hy a neck; ely- 

 tra usually tapering behind the middle. 



Division IV. LKPTI'ROIDKS. p. 104 

 an. Base of antenna' partly enveloped by the eyes; head inserted in the 



thorax. 



c. Second joint of antemue small, not over one-fourth the length of third 



(except in .l//rror///f.s ;') ; front coxa- not conical, though sometimes 



pr.iminent. Division II. CEBAMBYCOIDES, p. loiiu. 



re. Second joint of nnteniup about one-third the length of third joint; 



front coxa- globose, widely separated. 



Division III. ATIM IOIUKS. p. 1041. 



Division I. CALL/ IHOIDE8. 



This division is separated into two tribes, both of which are 

 represented in Indiana. 



