SUBFAMILY VII. — DER^OCORIN^E. 899 



Michx., "mostly from among clusters of aphid-deformed 

 leaves." 



994 ( — ). Der^eocoris alnicola Knight, 1921, 132. 



General color brownish-yellow with fuscous punctures; scutellum 

 yellow with a broad brown stripe each side of middle; outer apical half 

 of corium usually tinged with fuscous-brown ; cuneus yellow, the tip 

 brown ; membrane dusky translucent, paler on sides ; legs pale yellow, 

 apical third of femora and two rings on all tibiae brown; under surface 

 as in betnla>. Antenna? with joint 2 yellow, darker toward tips, sparsely 

 beset with long erect hairs, three and one-half times longer than 1 ; 3 and 

 4 dusky, 4 three-fourths as long as 3. Length, 6.5 — 6.8 mm. 



McLean Bogs, Tompkins Co., N. Y., July 3 (Gerhard). Re- 

 corded only from Ottawa, Ontario, Connecticut, and New York. 

 Taken only on Alnns incana (L.). 



995 ( — ). Der^eocoris aphidiphagus Knight, 1921, 134. 



Dull brownish-yellow, thickly marked with fuscous punctures; head 

 with a bar at base of vertex, some transverse lines each side of front 

 and two lines on tylus, brown or black; calli with basal three-fourths 

 shining black, apical fourth yellow; scutellum brown with narrow median 

 line and lateral stripes pale; corium usually with a dark brown blotch on 

 middle and another on outer apical angle; embolium and cuneus pale 

 translucent yellow marked with small brownish punctures, the tips brown- 

 ish; membrane dusky translucent, the veins darker; legs pale yellow, 

 apical third of middle and hind femora and basal halves of their tibia? 

 each with two brown rings; ventrals blackish-brown, shining. Antennae 

 dull yellow to fuscous-brown, joint 1 slightly shorter than width of ver- 

 tex, 2 three times as long as 1 ; 3 and 4 united three-fourths the length 

 of 2. Beak reaching between the middle coxa?. Pronotum nearly three- 

 fourths wider at base than long, sides and basal margin distinctly 

 sinuate, disk rather coarsely and unevenly punctate. Elytra more finely 

 and evenly punctate. Length, 6 — 6.3 mm. 



Willow Springs, 111., and Twin Lake, Minn., June 29 — July 3 

 (Gerhard). Washington, D. C, June 26 (Davis). Ranges from 

 Nova Scotia, Ontario and New England west to the Dakotas and 

 Colorado and south to Virginia. Knight states that he has 

 found it "breeding only on elm and in the curled leaves infested 

 with the aphid, Schisoneura americana Riley." 



996 (1070a). Der^eocoris nitenatus Knight, 1921, 141. 



Head yellow with oblique transverse marks on vertex and two lines 

 on tylus brown; pronotum with collar, calli and median line pale yellow, 

 remainder dull yellow, more or less blotched with patches of blackish- 

 brown punctures, the calli each with a curved brown dash; scutellum 

 yellow, usually with two vague brown stripes; corium in great part dark 

 brown, clavus and embolium, except toward their tips, paler; cuneus yel- 

 low, the tip brown; membrane yellowish-hyaline, the veins and apical 



