SUBFAMILY APHINAE 93 
as in aptera or somewhat longer. Hairs simple, rather numerous; .05-.08 and erect on hind 
tibia; .04-.05 on antenna; .08 on vertex and .05 on body. 
Ovipara. Apterous. Dingy carneous brown, lighter along median region; some examples 
lighter and greenish; head, prothorax, tip of abdomen and most of appendages brownish. 
Measurements as in apterous vivipara. Hind tibia much swollen and bearing scattered sen- 
soria along almost entire length. 
Male. Alate. Head and thorax black; abdomen light greenish yellow with broad black 
bands and lateral areas on all segments; distal portions of appendages dusky. Body length 
1.26, antenna 1. 
Egg. First, colorless to yellowish; later, shining black. Size .60 by .33. 
Fig. 101. Chaitophorus viminalis 
Collections. On leaves of Salix sp. Throughout region. Fundatrix April 28, 
apterous summer viviparae May 21 to Oct. 20, alate viviparae May 29 to Oct. 
20, oviparae Oct. 2 to Nov. 7, males Oct. 2 to 22; very common; in large colonies. 
Cotypes. Davis Collection. 
Chief Distinguishing Characters. Sensoria on III not more than 10 and in 
single row in alate vivipara and color patterns (the pale forms with four green 
spots or with green vittae and the dark brown to blackish forms with pale 
yellow median stripe occurring mingled together in the colonies). The pale and 
dark forms were formerly considered distinct species, but no corresponding 
structural differences to justify separation could, at present, be established. 
See Hottes and Frison (op. cit.). 
Genus Hoplochaitophorus Granovsky 
Granovsky, 1933:29. 
Characters. Vertex convex; frontal tubercles only slightly produced. 
Ocular tubercle present. Antenna six-segmented; secondary sensoria subcircu- 
lar with narrow rims. Cornicle truncate, narrowed in distal portion, with flar- 
ing flange, surface smooth. Cauda knobbed; anal plate distinctly bilobed. 
Hairs on body of aptera set on tubercles and developed into heavy spines, 
interspersed with sparse fine hairs; on appendages fine and inconspicuous; in 
alata fine and inconspicuous on both body and appendages. Fore wing with 
media twice-branched, radial sector distinct and curved; all veins, including 
costa and subcosta rather broadly bordered with fuscous bands. Ovipara with 
long drawn out ovipositor. Male apterous. Living in crowded colonies on upper 
surfaces of leaves. 
