Vol. XXX j ENTOMOLOGICAL NEWS. 2 IJ 



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. rctlculatus VanDuzee, described! from 

 specimens from I "tali 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, Xe\v York, a long series of specimens collected by him 

 during the Summer of 1917 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)t 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 rctlculatus 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 female. 



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

 four \ve!l developed pronotal horns extending in a row across the dor- 

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

 shorter; scutcllum plainly exposed, bidentate ; posterior process narrow 

 at base, high 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. 



f Van I 'u/re. !'.. I'. Studies in North American Membracidae. Hull. 

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



J.S'.v/;. I'rsi>^is pithi'sci'ii.* I'.cntham. ? 



