164 Eighteenth Report State Entomologist of Minnesota — 1920 



June 22, 2i 39 June 27, 2^ 29 June 30, i July 8, Ithaca; 6(^ 29 

 June 26, \2i 389 July 13, Ringwood near Ithaca ( H. H. Knight), all 

 taken on Finns strubus. IS 19 July 22. Conifer ( H. Osborn). S 

 June 18, 2 c? 59 July 8, Cranberry Lake; 29 Aug. 1-7, Wanakena ( C. 

 J. Drake). 29 July 3. Wyandanch, Long Island (W'ni. T. Davis). 

 CANADA,— 9 ":\lilton. Can." [? Ontario] ( Uhler collection). 



The writer has found this species only on white pine. Pi>ius sfro- 

 biis, to which tree it appears to be restricted in its breeding habits. 

 At Ithaca, on June 9, the fifth stage nymphs were found in numbers 

 on two white pine trees. The nymphs were living among and were 

 predaceous u])()n the jjine bark aphid (Chcniics pinicorticis Fitch), 

 the predator l)eing covered with a coat of white, wax-like, flocculent 

 material, very similar to that which covered the aphids. On June 13. 

 1914, the adults were emerging rapidly and the next day most of them 

 were out but many still in a tenerel condition. Most of the adults 

 disappear before the last week in July, the females probably depositing 

 their eggs in the terminal growth, there to spend the winter and hatch 

 the following May. 



Deraeocoris laricicola new species 



Very suggestive of pinicola but slightly larger and more elongate, differs 

 in the prominent exserted hairs on antennae and in the structure of the gen- 

 ital clas])crs. 



i. Length 6.4 mm. Head: width 1.11 mm., vertex .48 mm, length .6 

 mm. ; carina obsolete but the vertex slightly impressed : marked very similarly 

 to pinicnla but the black arc each side of median line rarely connects with ihe 

 black at base of tylus, tlie eyes also being slightly larger and more pri)minent. 

 Rostrum, length Z2Z mm., scarcely attaining the posterior margins of the mid- 

 dle coxae, piceous, paler at the joints. 



Antennae : segment I, length .51 mm.; II, 1.77 mm., nearly cylindrical but 

 slightly tapering at base, equal in thickness to segment I, pale to dusky pubescent, 

 exserted hairs prominent, in length equal to one and one-half times thickness of 

 segment; III, .69 mm.; \X. .S7 mm.; black, more or less shining. 



Pronntitin : length 1.42 mm., width at base 2.28 mm., anterior angles 1 

 mm. ; collar .75 mm., opaque, brownish to black ; disk moderately convex, coarsely 

 black punctate, more deeply and irregularly behind the calli and at the sides ; 

 lateral margins irregularly defined, delimited by coarse punctures, a few pubes- 

 cent hairs scattered along the margins, anterior angles narrowed, little wider 

 tlian the collar; calli convex, confluent, black and shining, delimited behind bv 

 coarse ])unctures, the black color extending to front margin of disk except 

 for a small spot before the lateral angles and one between at the median line: 

 disk becoming piceous or black between the punctures, usually paler along the 

 median line and behind lateral margins of calli ; propleura more or less pale, 

 black surrounding dorsal half of coxa! cleft, opaque, black punctate but more 



