134 



Eighteenth Report State Entomologist of Minnesota— 1920 



abruptly convex from the lateral margin, central area somewhat flattened ; disk 

 more finely and closely punctate than in alnicola; calli convex, black, also a 

 lunate mark which extends to anterior angle of disk, brownish black to black 

 behind the calli ; brownish on the central area of disk but the median line 

 is not emphasized, lateral margins broadly pale ; propleura pale, a blackish 

 spot behind the coxal cleft on the lower half; xyphus yellowish, blackish each 

 side behind the collar. Scutellum convex, smooth, somewhat depressed 

 at middle of base, brownish black, basal angles and median line except at base 

 pale. Sternum opaque, brownish black, the median line and margins paler ; 

 pleura dark brownish to blackish, paler at margins and on basalar plate; ostiolar 

 peritreme pale, invaded with blackish above. 



Hemelytra : width 2.9 mm., lateral margins more distinctly arcuate than 

 in alnicola; black punctate, clavus brownish to blackish, darker at apex and bor- 

 dering claval suture on basal half ; embolium and lateral margin of corium 

 except apex pale, broadly at apex and more or less connected with spot at 

 middle of corium blackish. Ciincus pale, inner basal angle and the apex black- 

 ish. Membrane pale, brachium 

 dark brownish, stained with 

 fuliginous at either side, per- 

 haps the apical half somewhat 

 fuliginous in the male or dark- 

 est specimens. 



Legs: not differing appre- 

 ciably from those of alnicola. 



Venter: brownish with black- 

 ish, bordering the ovipositor 

 and sutures of the genital seg- 



Fig. 12. Deraeocoris shastan, male genital 

 claspers. a. left clasper, lateral aspect ; b, inter- 

 nal arm of left clasper ; c, right clasper, lateral 

 aspect. 



ments, and surrounding the spiracles, blackish. 



Holotype: $ ]\Iay 28, Siskiyou County, California ( F. \\'. Xu- 

 nenmacher) ; author's collection. Allotype : J\Iay 20. 1920. Bryson, 

 Monterey County, California (E. P. Van Duzee). 



This species is named after the Shastan Indians, a tribe that in- 

 habited northern California. The male specimen was received too late 

 to serve for the description. It is slightly • smaller than the female 

 but very similar in coloration; genital claspers (fig. 12) distinctive 

 of the species. 



Deraeocoris aphidiphagus new species 



1909 jCamptobrochis grandis Renter, Acta Soc. Sci. Fenn., xxxvi, No. 2, p. 56. 



Fusco-grayish to blackish, the paler and translucent parts not stained with 

 brownish, apical half of membrane infuscated, tibiae triannulate with blackish ; 

 left genital clasper having a long horn at the dorsal margin ; structurally 

 as in borcalis unless otherwise described. 



$. Length 5.9 mm. Head: width 1.08 mm., vertex .51 mm., length .57 

 mm. ; pale, large spot each side of vertex, four or five transverse marks form- 

 ing an arc each side of median line and sometimes meeting in front of ver- 



