44© CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



Holotype : Male, 25 June, 1915, Batavia, N. Y. (H. H. Knight) ; author's 

 collection. Allotype: same data as the type. Paratj-pes : Males and 

 females (24), taken with the types. Connecticut— Male, 17 July, 1909, 

 Middletown (C. W. Johnson). Maine — Female, 10 July, 1907, Calais; 

 Male, 20 July, 1907, Capens ; male and females (3), 15 July, 1909, East- 

 port; Male, 26 July, 1906, Males (7) and females (4), 22 July, 1909, 

 Machias; Males and females, 12 July, 1909, Princeton; male, 27 July, 

 1910, Traveller Mountain (C. W. Johnson). New Hampshire— Male, Mt. 

 Washington (Mrs. A. T. Slosson). Males (2) and females (3), 15 July, 

 male and females (2), 24 July, 1915, Glen House; male and female, July, 

 1913 (alt. 3000 ft), female, 15 July, female, 28 July, 1915, Mt. Washington; 

 male, 18 July. 1915, Halfway House, Mt. Washington (C. W. Johnson). 

 New York— Females (2), 4 July, 1915, Four Mile; Female, 26 July, 1916, 

 Ithaca; Females (4), 22 Aug., 1916, Whiteface Mountain (H. H. Knight). 

 Vermont — Male and females (2), 26 June, 1906, Montpelier (C. W. 

 Johnson). Ontario — Females (3), 10 July, 1915, Parry Sound (H. S. 

 Parish). 



Plagiognathus flavoscutellatus Knight, new species. 



Male: Length 4.4 mm., width 1.67 mm. Head : Width .80 mm., 

 vertex .36 mm. ; black, vertex and front more or less yellowish. 

 Rostrum, length 1.57 mm., reaching to middle of hind coxae, black. 



Antennae: Segment i, length .31 mm., black, narrowly pale at 

 apex ; ii, 1.43 mm., black, cylindrical, slightly thinner than segment 

 i; iii, .88mm., brownish black; iv, mutilated. 



Pronotum: Length .68 mm., width at base 1.29 mm.; black, 

 moderately shining, pale pubescent. Scutellum black, becoming 

 pale at apex and along median line, sometimes only the basal angles 

 remaining dark. Sternum and pleura black, ostiolar peritreme 

 somewhat yellowish. 



Hemelytra : Embolar margin very slightly arcuate ; black, basal 

 half of embolium and corium, apex of embolium, base and outer 

 margin of cuneus, pale to yellow, pale color on corium finding its 

 distal limit along radial vein rather than along claval suture. 

 Membrane uniformly fuscous, a clear spot bordering apex of 

 cuneus, veins pale or yellowish. 



Legs : Fulvous to dark brown, femora with two rows of black 

 spots on anterior face, irregularly spotted on posterior face ; coxae 

 blackish except apically ; knees black, tibiae with prominent black 

 spines, black spots at base of spines becoming obsolete apically. 

 Venter black, moderately shining, pale pubescent ; genital 

 characters distinctive. 



Female: Length 4.3 mm., width 1.7 mm. ; more robust than the 

 male, usually more broadly pale ; scutellum except base, just before 

 calli and a slight vitta on median line at base of pronotal disk, 

 pale; embolium, claval suture, anal ridge and joining with base of 

 cuneus, pale; dark color of cuneus reduced to a blackish spot 

 bordering smaller areole ; legs more fulvous than in the male. 



Food plant : Salix longifolia. 



Holotype: Male, 6 Aug., 1914, Batavia, N. Y. (H. H. Knight) ; author's 

 collection. Allotype: 12 July, 1919, Hennepin County, Minnesota (H. H. 



