Vol. XXX ] ENTOMOLOGICAL NEWS. 21/ 



A New Tylocentrus from Arizona (Membracidae ; 

 Homoptera). 



By W. D. FUNKHOUSER.* 



(Plate X) 



The genus Tylocentrus VanDuzee was erected for the ac- 

 commodation of T. rcticulatits VanDuzee, describedf from 

 specimens from Utah and Arizona. The type species is ap- 

 parently common throughout the southwestern part of the 

 United States and I have received from Mr. H. H. Knight of 

 Ithaca, New York, a long series of specimens collected by him 

 during the Summer of 191 7 in the vicinities of Fabeus, Texas, 

 and Ft. Stockton, Texas. Mr. Knight's field notes record the 

 host-plant of this insect as the "screw-bean" (Strombocarpa 

 odorata (Torrey) A. Gray)i and the specimen labels bear the 

 dates of July 5 for the Ft. Stockton material and July 9 for 

 the Fabeus specimens. 



Since the description of the type species, the genus has re- 

 mained monotypic but the following insect must now be added : 



Tylocentrus quadricornis sp. nov. (Plate X; Figs. 1, 2, 3 and 4). 



Near Tylocentrus reticulatus VanDuzee but differing prin- 

 cipally in the shape of the head and clypeus, the shape of the 

 posterior process and in having four distinct pronotal horns 

 in the fen^ale. 



Robust, mottled yellow, brown and black, finely punctate, pubescent; 

 four well developed pronotal horns extending in a row across the dor- 

 sum in a line with the humeral angles, the middle pair being the 

 shorter ; scutellum plainly exposed, bidentate ; posterior process narrow 

 at base, higb and arcuate at extremity, slightly elevated above teg- 

 mina ; tegmina semiopaque, mottled yellow, ferruginous and brown; 

 legs yellow, banded with brown. 



Head twice as wide as long, very roughly sculptured, swollen in 

 centre, brown with black markings at margins of eyes and a black 

 spot above each ocellus, finely punctate, closely pubescent with whitish 



* Contribution from the Zoological Laboratory of the University of 

 Kentucky. 



t VanDuzee, E. P. Studies in North American Membracidae. Bull. 

 Bufif. Soc. Nat. Sci. ix, pp. 118-119, pi. 2, figs. 39 and 40. April 18, 1908. 



t Syn. Prosopis pubescens Bentham. ? 



