166 PROCEEDINGS OF THE NATIONAL MUSEUM vol.86 



cahua Mts.," all collected in June or July. The pygidium and clypeus 

 vary from slightly convex to tumid ; in one female example the basal 

 half of the pygidium is semitumid. Schaeffer points out that the last 

 paragraph in Horn's description of P. robust a (Horn) (i. e., sander- 

 sonia Saylor) in reality refers to this species, which would seem to 

 indicate that this species occurs in New Mexico; I have not seen 

 specimens, however, from that State. 



PHYLLOPHAGA (PHYTALUS) PALLIDA (Horn) 



Plate 9, Figure 5d ; Plate 10, Figures 5a-5c 



Phytalus pallidus Hobn, Trans. Amer. Ent. Soc, vol. 12, p. 121, 1885; 6th Ann. 

 Rept. Arizona Comm. Hort. and Ent., p. 30, 1914, 



Male. — Testaceous, head and thorax rufotestaceous, almost glabrous, 

 surface moderately shining. Head with front densely and coarsely 

 punctured; clypeal suture lightly impressed, bisinuate; clypeus 

 slightly emarginate at center of apex, faintly reflexed, angles rounded, 

 surface densely punctured ; antennal club slightly shorter than f unicle. 

 Thorax with sides broadly rounded, crenulate, angles obtuse, disk 

 coarsely sparsely and rather regularly punctured. Elytra densely 

 punctured, rugose, sutural costae elevated. Pygidium flattened, 

 coarsely rugose, moderately and densely punctured, glabrous except 

 for a few erect hairs at the rounded apex. Abdomen finely and mod- 

 erately densely punctured, the punctures with short hairs; apical 

 half of segment 5 with a raised rounded lobe reaching to apical 

 border, the surface of which is granular-strigose, its apex finely ser- 

 rate ; segment 6 ratlier deeply and transversely sulcate, the apical and 

 basal margins carinate. Posterior spurs free, elongate. 



Female. — Antennal club equal to segments 3-7 combined; abdomen 

 convex, sparsely setigerously punctate, segment 5 longer than 4, 

 slightly tumescent in apical half, densely and coarsely punctured; 

 segment 6 one-half the length of 5, densely punctured; otherwise 

 similar to male. 



Length, 12-14 mm. Width, 5.5-6 mm. 



Remarks. — Most of the specimens examined are from Arizona : Fort 

 Huachuca, Fort Grant, and Ramsey Canyon, all taken in July. I have 

 also in my collection a male from Bakachaka, Rio Mayo, Sonora, 

 Mexico, taken in July by m\ friend Howard Gentry. 



Closely related to P. sonora Saylor but may be separated by the 

 puncturing of the head and clypeus, as well as by the male sexual 

 characters. 



