EUACANTUUS. 



227 



Genus EUACANTHUS. 



Evacantlms, Lep. ^- Serv. Enc. Meth. x, p. 612 (182o). 

 Amblycephalus, Curtis, Brit. Entomol. xii, p. 572 (1835) ; Edwards, 



Tr. E. S. 1888, p. 13. 

 Euacantlius, Burm. Handb. Eut. ii, p. 116 (1835). 

 Eucanthus, Van Duzee, Trans. Am. Ent. Soc. xxi, p. 281 (1894). 



Type, E. iatemiptus, Linn., a Palaearctic species. 



Bistrihutioii. Pahearctic and Oriental Regions. Probably much 

 more widely distributed. 



Pace longitudinally earinate ; vertex with an anchor-shaped 

 ridge, crossed about its apical third by a more or less distinct 

 straight ridge, which runs from near one ocellus to the other ; on 

 each side ot" the base a callus or a short outwardly oblique keel, 

 the lateral and apical margins strongly reflexed; pronotum 

 rounded anteriorly, the anterior margin truncate between the 

 eyes, lateral margins nearly straight, posterior margin moderately 

 sinuate ; scutelhim broadly subtriangular, with a transverse 

 impressed line before the apical area ; other characters generally 

 as in Tettigoniella. 



2465. Euacaiitlms extremus, Walk. (Tettigouia) i^s« Horn. iii,p. 761 

 (1851) ; Sign. Ann. Soe. Ent. Fr. 1853, p. 663, t. xxi, f. 4 ; 

 Stdl (Euacanthus), Of v. Vet.-Ak. Fork p. 495 (1862) ; Dist. 

 Sci. Hes. 2)id Tnrk. Miss. p. 15 (1879) ; Atkins. (Tettigonia) 

 J. A. S. B. liv, p. 100 (1885). 



Vertex of head black, the lateral and anterior margins and the 



Fig. 142. — Euacanthus extremus. 



anterior portion of the central ridge oehraceous, lateral basal areas 

 stramineous; pronotum stramineous, with a broad central fascia 



q2 



