138 Eighteenth Report State Entomoloc;ist of Minnesota — 1920 



Legs: pale, femora more or less brownish black on the apical half, a pale 

 band just before apex but interrupted on the anterior face, the basal half with 



a linear series of fuscous spots, 

 the anterior pair more broadly 

 pale : tibiae triannulate with 

 brownish black, also wnth a spot 

 at knee ; tarsi yellowish brown, 

 darker at apices, claws and arolia 

 typical of the group. 



I' enter: black or brownish 

 „. ,, ^ • . ■ ,• , . black, pale pubescent; genital 



i\g. 14. Deraeocoris triannulipes, male gem- ... 



tal claspers. a, left clasper, lateral aspect; b, claspers (fig. 14) distinctive of 



internal arm of left clasper; c, right clasper, ,, 



lateral aspect. the species. 



Holoiypc : S Aug. 2, Rico, Colorado ( E. D. Ball ) ; author's col- 

 lection. Parotypc: S Aug. 8, Husavick, Manitoba (Coates); collec- 

 tion of E. P. V^an Duzee. 



Deraeocoris quercicola new species 



Darker colored than nitcnatus, fuscous to blackish, calli black, apical half 

 of membrane fumate, rarely so pale as in nitcnatus; left genital clasper with a 

 long dorsal horn which is very distinctive when taken in consideration with the 

 form of the internal arm. 



$ . Length 5.5 mm. Head : width .98 mm., vertex .45 mm., length .57 

 mm., structurally nearly as in borealis; pale to yellowish, collum, spot each side 

 of vertex, arc each side of front composed of transverse bars and practically 

 joining above, above and below base of antenna, geminate mark on tylus with 

 spot at base and slightly at apex, bucculae and more or less on juga and lorae, 

 black or brownish black. Rostrum, length 1.98 mm., attaining posterior mar- 

 gins of middle coxae, pale to brownish, darker at apex. 



Antennae: segment I, length .46 mm., pale, darkened slightly with fuscous 

 on basal half; II, 1.54 mm., nearly cylindrical, about equal to segment I in 

 thickness, more slender on the basal one-fifth and very slightly so at tip, brown- 

 ish, paler at base and brownish black on the apical one-fourth, pale pubescent, 

 length of a few exserted hairs exceeding thickness of segment; III, .65 mm.; 

 IV, .48 mm. ; last two segments yellowish brown, becoming infuscated apically. 



Pronotum: length 1.2 mm., width at base 1.99 mm., anterior angles .91 

 mm., collar .68 mm. ; disk rather uniformly black punctate, lateral margins 

 distinct, slenderly carinate, perceptibly sulcate, anterior angles slightly rounded ; 

 brownish black, frequently rather broadly paler along median line and on the 

 lateral submarginal area ; calli slightly convex, smooth and shining, black, pale 

 just before but the dark color extending from the antero-lateral angles to front 

 margin of disk, sejjarated at base by a pair of punctures at median line; pro- 

 pleura brownish black, lower margin paler ; xyphus convex anteriorly, pale, 

 di.sk darkened with brownish or fuscous. Seutelhou convex, smooth and shin- 

 ing, basal angles, apex and frequently the median line pale. Sternum and pleura 

 brownish black, opaque, basalar plate more brownish ; ostiolar peritreme white. 



Hemelytra : width 2.4 mm., black punctate, moderately convex, lateral mar- 



