192 MISC. PUBLICATION 4 7 0, U. S. DEPT. OF AGRICTLTrRE 



J3 



FiGrEE SO. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

 sternite of male (C) and of female (D) of <lkrysoJ)othris pseudotsugae. 



at middle ; surface coarsely, densely, irregularly punctate between the smooth 

 callosities. 



Elytra distinctly wider than pronotum, nearly twice as long as wide ; sides 

 nearly parallel from humeral angles to apical third, then arcuately converging 

 to tips, which are separately broadly rounded ; lateral margins slightly serrate ; 

 basal depressions broad, very deep ; humeral depressions broad, shallow ; surface 

 glabrous, uneren, densely, finely punctate between the elevated, smooth spaces. 

 Each elytron with four more or less distinct costae ; first distinct, narrow and 

 strongly elevated posteriorly, broader and flatter anteriorly, slightly diverging 

 from sutural margin from middle to apex; second and third rather distinct, 

 irregular, strongly interrupted ; fourth indistinct, irregular, following outline of 

 lateral margin ; all costae joined to one another by irregular, smooth, transverse 

 spaces. 



Abdomen beneath rather sparsely, coarsely punctate, sparsely clothed at 

 sides with short, recumbent, white hairs, without distinct lateral callosities, the 

 intervals obsoletely granulose : last visible sternite deeply, semicircularly eniar- 

 ginate at apex, without a submarginal ridge, the lateral margins slightly ser- 

 rate ; eighth tergite thickened at apex, densely granulose. rather densely, coarsely 

 punctate, the dorsal margin deeply, triangularly emarginate at apex. Pres- 

 ternum coarsely, sparsely punctate, nearly smooth at middle, sparsely clothed 

 with moderately long, erect, white hairs : anterior margin truncate, without a 

 median lobe. Anterior femur with a small, broadly obtuse tooth, which is finely 

 dentate on outer margin. Anterior and middle tibiae arcuate, the former with 

 a short, elongate dilation at apex, slightly constricted behind dilation ; posterior 

 tibia straight. 



Length 10.5 mm., width 4.25 mm. 



Redescribecl from a male paratype from the type locality in the 

 United States Xational Museum, kindly donated by Dr. Yan Dyke. 



Female. — Differing from the male in having the front of the head purplish 

 cupreous, sometimes with a faint bronzy-green tinge, the last visible sternite 

 more elongate, broadly, shaliowly. arcuately emarginate at apex, sometimes 

 truncate in middle of emargination, the eighth tergite more densely punctured, 

 with a small, triangular notch at apex, and the anterior tibia unarmed at apex. 



Type locality. — Carrville, Trinity Comity. Calif. : type in collection 

 of E. C. Van Dyke (California Academy of Sciences). 



