BEETLE GENTJS ONTHOPHAGUS — HOWDEN, CARTWRIGHT 97 



of the emargination; cylpeal disc transversely rugosely punctate, 

 clypeal carina evident, only slightly higher medially, terminating at 

 the genae. Frons and genae with scattered, coarse, setigerous punc- 

 tures; carina of vertex pronounced, nearly straight, depressed medially 

 and abruptly terminated laterally near the eyes; surface behind the 

 eyes with scattered, coarse, setigerous punctures. 



Pronotum differing only slightly from that described for male 

 minors, often showing no indication of the anterior median pronotal 

 projection, the pronotum being evenly rounded anteriorly. Elytra 

 not differing from those of male majors except by having slightly 

 more pronounced tubercles and setae. Pygidium convex apically, 

 sm-face coarsely punctate, each puncture bearing a conspicuous 

 whitish seta. Ventral sm-faces similar to males except for the slightly 

 more evident punctures and setae. Last abdominal segment not 

 narrowed medially. Forelegs not lengthened, the apex of the femora 

 not extending beyond the pronotal margin; foretibia short, stocky, 

 with four large teeth, with the margin denticulate or serrate between 

 and above; apex lacking conical projection and pencil of hairs noted 

 in male majors. 



Type. — Of hopfneri: Museum National d'Histoire Naturelle, Paris, 

 France. Of arizonensis: Lectotype, present designation, USNM 

 42590, 9, Brooklyn Museum Cat. 824. 



Type locality. — Of hopfneri: Veracruz, Mexico. Of arizonensis: 

 Nogales, Santa Cruz Co., Ariz. 



Specimens examined. — 247. 



Distribution. — (See fig. 5, p. 37.) 



United States: Arizona: Atascosa Mtn., Baboquivari Mts., Douglas, Nogales, 

 Patagonia, Portal (Southwestern Research Station), near San Fernando, Santa 

 Rita Mts., Tucson. 



Mexico: nayarit: Jesus Maria, Navarrete. morelos: 7 km. south of 

 Alpuyeca. 



Remarks. — At our request. Dr. A. VUliers very graciously compared 

 three specimens with the Harold types in the Museum National 

 d'Histoire Naturelle. He stated that our small Mexican specimen 

 with wide black band and no spots agreed well in size, punctation, 

 form of the clypeus, and frontal carina but that the type had yellow 

 spots. Our larger, many-spotted specimens were reported to be iden- 

 tical in elj'tral coloration. Because of the poor condition of Harold's 

 types. Dr. Villiers could not be sure of the sex but he indicated he 

 would not be surprised if both Harold specimens were females. 

 Neither has a pronotal projection. Inasmuch as the tj'^pe male 

 (supposedly!) has a frontal carina and the allotype has both clypeal 

 and frontal carinae, the holotj'^pe v^ery likely is a male minor. Because 



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