116 MISC. PUBLICATION 4 7 0, U. S. DEPT. OF AGRICTJ1/TTJRE 



Male. — Elongate, rather strongly depressed above, subopaque, bronzy green; 

 each elytron with a broad, longitudinal, purplish-black, median vitta extending 

 from middle to apex, connected posteriorly to sutural margin and to a narrow 

 vitta along lateral margin, and with a small, round spot of the same color at 

 basal fourth; beneath bluish to greenish black, with the legs slightly bronzy 

 green. 



Head uniformly bronzy green, with a more or less conspicuous, coppery-red 

 chevron on vertex ; front nearly flat ; surface rather coarsely, densely punctate, 

 longitudinally rugose on occiput, transversely rugose behind clypeus, sparsely 

 clothed with long, recumbent, whitish hairs, intervals finely, densely granulose : 

 clypeus semicircularly emarginate in front, broadly rounded on each side. 

 Antenna piceous, with a distinct cupreous tinge, gradually narrowed to apex ; 

 intermediate segments compact, twice as wide as long, broadly rounded at outer 

 margins ; third segment slightly longer than fourth. 



Pronotum three-fifths wider than long, subequal in width at base and apex, 

 widest along middle ; sides nearly parallel along middle, arcuately converging 

 toward base and apex ; anterior margin slightly sinuate, with a broadly rounded 

 median lobe; base broadly, arcuately emarginate on each side, median lobe 

 moderately produced and broadly rounded ; disk uniformly convex, without 

 depressions or callosities ; surface rather densely, coarsely, uniformly punctate 

 at middle, more densely punctate at sides, intervals finely, densely granulose. 



Elytra at base slightly wider than pronotum, nearly twice as long as wide, 

 widest at apical third; sides slightly diverging from humeral angles to apical 

 third, then arcuately converging to tips, which are separately narrowly rounded ; 

 lateral margins coarsely serrate posteriorly ; basal depressions broad and rather 

 deep ; humeral depressions elongate and shallow ; surface glabrous, finely, densely 

 granulose, densely, coarsely, uniformly punctate basally, the punctures becoming- 

 obsolete toward apices ; each elytron with an indistinct median fovea in front 

 of middle, and an indistinct, longitudinal costa posteriorly along lateral margin. 



Abdomen beneath coarsely, sparsely punctate, sparsely clothed with short, re- 

 cumbent, inconspicuous hairs, without lateral callosities, intervals vaguely 

 granulose; last visible sternite broadly, arcuately emarginate at apex, without 

 a distinct submarginal ridge, lateral margins slightly serrate ; eighth tergite 

 (missing in type). Prosternum coarsely, rather densely punctate, more or less 

 rugose, sparsely clothed with long, erect, whitish hairs; anterior margin with 

 a distinct, broad, moderately long, median lobe. Anterior femur with a large, 

 acute tooth, which is coarsely dentate on outer margin. Anterior tibia slightly 

 arcuate, with an elongate dilation at apex ; middle and posterior tibiae straight. 



Length 6 mm., width 2.25 mm. 



Kedescribed from the male lectotype, No. 42636, in the United 

 States National Museum (present lectotype designation) . 



Female. — The two sexes are very much alike, but the female differs from the 

 male in having the last visible sternite broadly, transversely sinuate at apex, 

 the eighth tergite broadly rounded at the apex and more densely punctured, the 

 prosternum more sparsely punctured, and the anterior tibia unarmed at the 

 apex. 



Type locality. — Florence, Ariz. 



DISTRIBUTION 



From material examined : 



Arizona: Cotton City, reared (G. Hofer). Florence, type series (G. FranekK 



Santa Catalina Mountains, reared (M. Chrisman). 

 Lower California: El Taste, San Felipe, and Santa Rosa, August 1901 (G. 



Beyer). 



Hosts. — Adults have been reared from larvae cut from "grease- 

 wood" collected in Arizona by M. Chrisman, and from larvae found 

 between the bark and wood, and the heart wood of dead branches of 

 Canotia sp. collected at the edge of the desert near Cotton City, Ariz.,, 

 by G. Hofer. 



