Deraeoc'oris ( Heteroptera, Miridae) 117 



Antennae '■ segment. I, length .34 mm., fusco-brownish and somewhat trans- 

 lucent ; II, 1.56 mm., brownish black, cylindrical, perceptibly thicker than seg- 

 ment I, constricted at base, clothed with fine dusky pubescence, beset at inter- 

 vals with erect hairs which in length equal the thickness of the segment ; 

 III, .41 mm., slender, blackish, beset with erect hairs which in length exceed 

 thickness of segment ; IV, missing. 



Pronotn})i : length 1 mm., width at base 1.68 mm., anterior angles .77 mm., 

 collar .63 mm. ; very similar to inccrtus except that the disk is more coarsely 

 punctate behind the calli ; dark brownish to black, shining, slender median line 

 and the basal margin of disk pale or white, just before calli and an irregular 

 spot behind the outer angles pale. Scutellum punctate, rather coarsely rugose- 

 punctate on the basal half ; dark brownish black, basal angles and apex ivory- 

 white, median line palely indicated near apex. Sternum more brownish at the 

 sides than in incertus. 



Hemelytra: width 1.98 mm., similar to mcertus except for the color; dark 

 fusco-brownish, translucent, somewhat paler each side of the scutellum. Cuneus 



dark red, slender margin bordering the mem- 

 brane dark brownish. Membrane marked 

 similarly to incertus but the infuscation 

 darker, invading the membrane more ex- 

 tensively each side of the brachium. 



Legs : marked similarly to incertus but the 



dark color more brownish than black. 

 Fig. 5. Deraeocoris rufus- . i . • , • i • • 



cuius, male genital claspers. I enter: dark brownish to piceous, shmmg, 



a, left clasper, lateral aspect : rather sparsely pale pubescent ; genital claspers 



b, internal arm of left clasper ; f j t^ f > & f 



c, right clasper, lateral aspect. (fig-. 5) distinctive of the SpecieS. 



Holotype: S August 12, Portland, Oregon (A. A. Nichol); 

 author's collection. 



Deraeoccris diveni new si)ecies 



Larger than incertus. and more elongate, black, shining, pale pilose above; 

 median line of front and tylus and the tip of the scutellum more or less pale, 

 tibiae biannulate with pale. 



<? . Length 6.4 mm. Head : width 1.03 mm., vertex .45 mm., length .51 mm. ; 

 carina absent, vertex abruptly declivous behind, collum narrowly exposed; 

 black, shining, tylus and juga distinctly pale pilose; median line of frons and 

 spreading to form a triangle on vertex, more distinctly on median line of tylus, 

 lower margins of bucculae and extreme tip of tylus, pale or white. Rostrum, 

 length 1.85 mm., reaching upon the middle coxae, black, paler at apex of first 

 and second segments. 



Antennae: segment I, length .43 mm., strongly narrowed basally, longly pale 

 pubescent on the apical half; II, 1.42 mm., thickness .10 mm., slightly thicker 

 than segment I, nearly cylindrical but narrowed at base and slightly so at 

 apex, black, the extreme tip white, pale pubescent, several exserted hairs slightly 

 darker and in length exceeding the thickness of the segment ; III, .52 mm. ; 

 IV, .45 mm. ; black, the last two segments slender, beset with exserted hairs 

 which in length are nearly equal to twice the thickness of the segment. 



