REVISION OF SUBGENUS PHYTALUS — SAYLOR 161 



Last abdominal segment convex, not sulcate; yygidium sparsely 



punctured (Arizona, Mexico) sonora 



6. Scutellum densely, closely punctured ; pygidium evenly punc- 

 tured georglana 



Scutellum punctured only at sides; pygidium irregularly punc- 

 tured omani 



PHYLLOPHAGA (PHYTALUS) SANDERSONIA, new name 



Plate 9, FiotrREs la-lc 



Phytalus robustvs Hoen, Trans. Amer. Ent. Soc, vol. 12, p. 120, 1895 {nee 



LeConte, 1856). 

 Phytalus trichodes Bates, Biologia Centrali-Americana, vol. 2, pt. 2, p. 178. 



1890. 



Male. — Robust, elongate-oval, rufocastaneous, shining, entirely 

 clothed above with short, very dense, suberect hair, that of front 

 longer. Head with front exceedingly densely variolate-punctate, the 

 punctures of moderate size and closely contiguous; clypeus punc- 

 tured like front but less densely so, its apex moderately reflexed and 

 slightly emarginate at middle. Antennae 10-segmented, club sub- 

 equal to or very slightly longer than funicle. Thorax very regularly 

 and extremely densely, evenly punctured over the entire surface ; hind 

 angles obtusely angulate ; lateral margins almost evenly arcuate, cren- 

 ulate, ciliate. Elytra very rugosely wrinkled, densely punctured, 

 striae other than sutural weakly indicated. Pygidium with or with- 

 out a very short longitudinal carina at center of basal margin, sur- 

 face flattened near apex, evenly and densely punctured over the entire 

 surface, with dense moderately long suberect hairs; apex subtruncate 

 to subrounded. Abdomen polished, sparsely hairy, widely, shallowly 

 and longitudinally concave at center; fifth segment plane, with mod- 

 erately dense setigerous punctures at sides and apex ; sixth two-thirds 

 as long as fifth, more coarsely punctured and with longer erect hairs. 

 Fixed spur of hind tibia short and twisted. All claws with upper 

 tooth much shorter and more slender than lower. Front tarsi with 

 segments 1 to 3, inclusive, with the inner apical margin prolonged 

 into a strong spine, this character most strongly marked in segment 1. 



Female. — Pygidium glabrous, sparsely punctured, declivate, and 

 with a tubercle before apex; posterior tibial spurs free, elongate. 

 (Amended from original description.) 



Length, 17-20 mm. Width, 8.5-10 mm. 



Remarks. — Horn described the species from the Rio Grande coun- 

 try near Matamoros, and I have seen two specimens (that were com- 

 pared with the type) from Brownsville, Tex. (F. H. Snow and 

 Charles SchaefFer), and also one male from Del Rio, Tex. (May 15, 

 1937, A. Meade). Described by Bates from Las Vigas, Veracruz 



