1034 



FAMILY LII. CERAMBYCID/E. 



1911 (6171). CYLLENE KOBINI.E Forst., Nov. Sp. Ins., 1771, 43. 



Resembles i> ictus so closely that 

 oiily an expert can tell them apart. The 

 characters given in the key are those 

 usually relied upon. The elytra are less 

 tapering and more broadly rounded at 

 apex, thus giving it a more robust appear- 

 ance, ond the hind femora and antennae of 

 male are distinctly shorter than in pictus. 

 Length 14-20 mm. (Fig. 439.) 



Throughout the State ; common. 

 August 21 -October 0. Occurs 

 abundantly in autumn on golden- 

 rod and about the trees of the 

 l)i;ick locust (Rolinia}. The wood 

 of this tree is often injured by the 

 larva, which is known as the "locust 

 borer." 



1912 (6172). CYLLEXE DECORUS Oliv.. 



Ent.. IV, 179.-). r,:{. 

 Elongate, robust. Head black ; cly- 

 peus and a narrow transverse band be- 



Fig. 439. Female. X 2$. (After Hopkins in Cire. hm(1 the eyes< yellow; thorax yellow 

 Xo. 83. Bur. Ent. U. S. Dept. Agr.) 



with three short and narrow, black 



crossbars: elytra black, the basal third, a baud behind the middle and the 

 tips yellow : under surface yellow. Length 14-20 mm. 



Knox County; rare. October 11. One specimen from near 

 the border of the tamarack swamp. A southern species, which in 

 Indiana reaches its most northern and eastern range. Our form is 

 the var. chanis Say described from I'nsvy County. Say's specimen 

 being taken ''near the end of August." 



XXVIII. PLAGIONOTL-S Muls. 1842. (Gr., "oblique r back." f 

 This genus contains only a single larire species, distinguished 



from its allies by the heavier compressed antenna 1 . 



1913 (C.17.",). PI.AGIONOTUS SPECIOSUS Say. Amer. Entoin.. III. 1S2S. US. 



1.1 r.3; ibid. 1. US. 



Elongate, ruluist. Black ; densely clothed with yel- 

 low pubescence, this covering the greater part of head 



and formirg two short oblique bands on each side of 



thorax and five on elytra, arranged as follows: one 



forming an arch diverging from scutellnm. behind this 



a second W-shapod band; a third nearly transverse 



one across the middle; a fourth curved cadi side from 



the suture obliquely backward and separated narrowly 



from the fifth and broadesl upon the apex. Length 



23-25 mm. (Fig. HO.) 



Fig. 440. 

 (Aflor 



Natural MU 



