iu;54 



FA .M 1 1 - V 1,1 1 . CERA M 15 ^' CID.K. 



1911 (GlTl). 



Cvi.LENE jioiUiXi.E Forst., Nov. S]). Tns.. 1771. 4;>. 



Keseinhk's iiirtiis so clust'ly that 

 ouly an expert can tell tlieiu apart. The 

 characters given in the key are those 

 usnally relied upon. The elytra are less 

 tapering and more broadly rounded at 

 apex, tlius giving it a more robust appear- 

 ance, and the hind femora and antennae of 

 male are distinctly shorter than in pictus. 

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



Tlirou^lioiit the State; common. 

 .\ug'iist 21 -October 9. Occurs 

 atniiidantly in autumn on golden- 

 rod and about tbe trees of the 

 bbick locust (Rohiiiia). The wood 

 of this tree is often injured by the 

 lai-va, which is known as the "locust 

 borer. ' ' 



1!)12 ((1172). Cyllene decoeus Oliv.. 

 Ent.. IV, 1795, a'!. 

 Elongate, roliust. Head bhu-k ; dy- 

 peus and a narrow transverse band be- 

 hind the eyes, yellow; thorax yellow 

 with three short and narrow, black 

 criissbars: clyti':i black, tbe basal third, a band behind the middle and the 

 tii)s 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. chartis Say descri])ed from Posey County, Say's specimen 

 l;eing taken "near the end of August." 



Fig. 439. Feiiialp. x 2^. (After Hopkins in Cirt 

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



XXVIII. PLAOiON(Trr? ]\Iuls. 1842. fOr., "oblique ^ back.'") 

 This genus contains only a single larae species, distinguished 



from its allies by the heavier compressed antenna\ 



V.)\:\ (r.17.". ). I'l.ACMONOTi's sPEciosus Say, Anier. Entom.. HI. 1S2s. IIS. 

 Ill f).-!; Ibid. 1, IIS. 

 Elongate, roliust. Bliick ; densely clothed with yel- 

 low pubescence, this covering the greater part of head 



and forming two short oblique bands on each side of 



thorax and five on elytra, arranged as follows: one 



forming an nrdi diverging from scutcllum. behind this 



a second W-sbapcd band; a tiiird ne.nrly transverse 



one across the midiUe: a fourth curved each side from 



the suture obli(|nely b;ickwai-d and s(^]ia rated narrowly 



from the liftli and broadcsl upon the iu»ex. Length 



23-25 nun. (Fig. 440.) 



Fig. 440. Natural sue 

 (After Saunders. , 



