■ 



■ ■ 













■ 



SPHENOPHOBUS 



159 



■ 



7. Sphenophorus cicatistriatus. (Tab. VIII. figg. 3, 3 a, b, 6 .) 



■ 



Sphenophorus cicatistriatus, Fahr. in Schonh. Gen. Cure. iv. p. 958 \ 



Sphenophorus cicatripennis, Fahr. op. cit. viii. 2, p. 262 2 ; Chevr. Ann. Soc. Ent. Fr. 1885, 



pp. 110, 111 3 





L 









■ 



Sphenophorus ulkei, Horn, Proc. Am. Phil. Soc. xiii. p. 413 4 . 

 Sphenophorus irrelitus, Duges, in litt. 5 . 



3 . Anterior and intermediate femora clothed with coarse erect hairs along their lower face, the hairs 

 towards the base clustered into a matted tuft, the coxae of the same legs also with a pencil of hairs ; 

 all the tibiae sinuate, sulcate, and fringed with long hairs within ; anterior and intermediate tarsi with 



; . ... 



■ 



$ 



; ■ 



■ 



1 



the metasternum. 



5 . Anterior and intermediate femora with a small tuft of hairs at the base, a little larger than that on the 



coxae; tibiae clothed with shorter hairs. 

 Length 71-11, breadth 21-41- millim. 



L 



Eab. North America, Nebraska, Colorado, New Mexico, and Wyoming 4 

 Mexico 1 2 3 5 (Mas. Brit. ; ex coll. Sturm ; Truqui ; Flohr), Northern Sor 





■ 



M 



. 



■ ■ 









■ 





■ 



■ 



> 













L ' L 



■ 



n 



■ 



■ 



■ 



1 







(Morrison), Guanajuato, Izucar, Puebla (Salle), Mexico city (Palmer, Edge), Cholula, 



■ 



Morelia, Irapuato, Cerro de Palmas (Edge), Toluca (Edge, Wickham), Mixcoac, 



■ 



Salazar (Wickham), Yucatan (Mus. Brit.). 



A common insect on the Mexican plateau, specimens from thence agreeing perfectly 

 with others from Colorado and Wyoming sent me by Prof. F. H. Chittenden. It may 

 be known by the slightly produced outer apical angle of the anterior tibiae, and the 

 large, oval or horseshoe-shaped, foveee (fig. 3 b) placed along the narrow, sharply-cut, 

 lytral striae, the fovese in some examples being divided into two by the raised edges of 

 the stria. The sculpture of the prothorax is very variable, but the V-shaped, coarsely 

 punctured, depressed area at the base and the oblong similarly-punctate depression in 

 front are always traceable. The anterior tibiae are sharply dentate on the inner side 



towards the apex. The rostrum is short and stout, narrowly sulcate 







■ 



■ 

 ■ 



■ . 



■ 







■ 





L 



at the base, and, 



as seen in profile, sharply, rectangularly dilated at the apex beneath. The pygidium 

 has a small tuft of hairs on each side at the apex. In one of two examples from 

 Guanajuato (a 6 ) the puncturing of the prothorax is unusually dense, and the 

 alternate elytral interstices are narrowly raised and here and there transversely 

 confluent. In another ( $ ), from Sonora, the prothorax is comparatively smooth, with 

 the coarsely punctured basal and apical depressions only just indicated, and the foveae 

 the elytra rounded and somewhat widely separated. S. cicatripennis was based 



on 







■ 



■ 



upon examples with a comparatively smooth prothorax, fewer foveae on the 

 the depressions of the surface "pulverulent." Mr. Wickham met with 



1 



v*— jr- 



ty of 



We are indebted to him, and 



i 



■ft 





■ 







Prof. Chittenden, for specimens of S. ulkei, Hor 





■ 



BIOL. 



centr.-amer., Coleopt., Vol. IV. Pt. 7, October 1910. > YY 



■ 



,■ 

















