Jassidd' of lUinois. 17 



O. costalis Fabr. 



Cercopis costalu Fabr., Syst. Rhyng., p. 96, 44. 



Cercopis lateralis Fabr., Ent. Syst. Sup., p. 524, 24-5. — Coqueb., Illust. 



1, p. 35, tab. 9, fig. 3. 

 Cercopis marginella. Fabr., Syst. Rhyng., p 96, 44. 

 Tettigonia lugem Walk., List Homop., p. 775, 108. 

 Teltigonia pi/rrhotelns Walk., 1. c, p. 775, 100. 

 Teltigonitt roHtalin Sign., Ann. Ent. Soc. Fr. Tome II. (1854), 35f», 210. 



Black marked with fine yellow spots uiid two longitudinal 

 red lines on each elytron. 



Length 7 mm. 



Head. Above evenly marked with a very great number 

 of very small yellow spots. The head is much smoother than 

 in the previous species, there being no indication of a median 

 groove and scarcely any behind the ocelli, which are nearer the 

 hind margin than in that species, the yellow spots along the 

 front margin forming a quite distinct line. Beneath, the sur- 

 face has likewise the yellow spots, tliose on the front generally 

 following the striations. Those on the cheeks are fewer and 

 larger, and there are only two or three on the clypeus. 



Thorax. Pronotum with the sides less indexed than in 

 0. /mt/aia, black, spotted with yellow like the head. Scutelluni 

 black, marked with yellowish lines, four on the anterior portion, 

 one pair of which'is longitudinal, and the other oblique, lying 

 on the edges of the scutelluni. The posterior portion has three 

 lines, an oblique one on either margin and a single longitudinal 

 median one. Sometimes a transverse line is also present on the 

 groove separating the two portions. Beneath, the pleurites 

 have a prominent yellow stripe extending backwards from the 

 posterior corner of the eyes. Below these, several irregular yel- 

 low spots are found, larger than those marking the dorsum. 

 Legs black, with the rows of spines on the femur and tibin- yel- 

 low. Elytra black, marked with two broad red bands, one on 

 the costa and one on the sutural edge of the clavum. The 

 cells which are not covered by the red bands are generally mar- 

 gined with yellow. The apical cells are small and the claval 

 veins distinct. Wings as in 0. nndata. 



Ahdomen. Above black, margined on each side with a 

 broad yellow stripe, the continuation of the stripes on the thorax. 



