REVISION OF LISTROCHELUS — SAYLOR 109 



Remarks. — Superficially resembles L. cochisa or a sm&W flavipennis 

 but not at all close to either species. Named for H. F. Wickham, who 

 collected such fine series of many species in this group. 



PHYLLOPHAGA (LISTROCHELUS) CUSHMANI. new species 



Figure 6, i, j 



Male. — Elongate-oval, strongly shining, elytra opaque or pruinose; 

 apparently glabrous except for elytra. Head with dense and very 

 coarse punctures, those of the clypeal apex sparser than those of front 

 and somewhat finer; clypeal apex truncate and slightly reflexed, 

 angles broadly rounded, transverse carina of vertex strongly indi- 

 cated, impunctate behind. Antennal club short but subequal to 

 funicle. Thorax with moderately coarse and dense punctures; lateral 

 margins coarsely crenate, with short and coarse cilia; disk under high 

 magnification showing extremely minute hairs. Elytra punctured as 

 thorax, but more sparsely so, the hairs much more obvious; striae not 

 obvious, the sutural striae also not prominent. Pygidium convex, 

 with very fine and not dense punctures, with short, fine hairs, apex 

 truncate. Abdomen flattened, highly polished, with very fine and 

 sparse punctures; fifth sternite slightly impressed transversely at 

 apex; sixth segment convex, with a slight transverse carina just before 

 the middle, the surface posterior to this impunctate, that anterior to 

 it coarsely punctured, with short and erect hair. All claws with a 

 strong median tooth, surface between tooth and claw base minutely 

 serrate. First segment of hind tarsus normal; first segment of front 

 tarsus without a spine at the inner apex. 



Female. — Unknown. 



Length. — 12.5-14 mm. Width. — 5-6 mm. 



Types. — Brewster County, Chisos Mountains, Tex., June 10, 1908, 

 a male collected at hght by Cushman and Mitchell; m the United 

 States National Museum (No. 53772). 



Paratypes: Males, 8; females, 0. Texas: Brewster County, Chisos 

 Mountains, June 10 [U.S.N.M.]; Presidio, May 1 (Owen, Jr.) [Rein- 

 liard]; Big Bend Park, Brewster County, July 29, 1937 (Rollin Baker) 

 [Cartwright]. New Mexico: Pyramid Peak, Dona Ana County, 

 August 9 (Fosberg) [Los Angeles Museum]. Arizona: "Arizona," 

 August 9, 1937 (Al Meade) [Saylorj. Mexico: Sierra Mojada, 

 Coahuila [Saylor]; Villa Juarez, Tamps, 300 feet. May 26, 1937 

 (Meade) [Saylor]; J. Manuel, El Salto, Durango, June 3, 1937, 9,300 

 feet (Meade) [Saylor]; Torreon, Chiapas, May 28, 1937 [Saylor]. 



Remarks. — Superficially close to L. texensis but very distinct in the 

 male genitalia as well as in the presence of the median larger tooth of 

 the tarsal claw. Named for one of the collectors, R. A. Cushman, of 

 the U. S. Bureau of Entomology and Plant Quarantine. 



