86 Psyche [June 
Chaitophorus coleoptis sp. nov. 
Alate viviparous female. Body small, length including cauda, 
1.4mm. Width of abdomen, .7 mm. Wing expansion, 2.3 mm. 
Head broader than long, slightly narrower than prothorax, width 
including eyes, .45 mm., dusky. Beak reaching to second coxa, 
tip dusky. Antenna arising from side of head, six articled, third 
joint subequal to spur, apical half of fifth together with sixth 
including filament dusky, rest the color of the body. Length of 
articles: III, .4 mm.; IV, .23 mm.; V, .2 mm.; VI, .1 mm.; filament, 
4mm. Eyes dark red. Prothorax dusky, very short, width, 
A7mm. Mesothorax dusky, width, .65mm. Metathorax dusky. 
Front leg pale except tarsi which is dusky, middle and hind legs 
of the color of body with femora and tarsi dusky. Length of 
femora: front, .25 mm.; middle, .35 mm.; hind, .45 mm. Length 
of tibia: front, .35 mm.; middle, .50 mm.; hind, .75 mm. Abdo- 
men, pale with a large middle dorsal patch of dusky or several 
transverse dusky bands, and also marginal dusky patch, some- 
what hairy. Cornicles pale, constricted about the middle, slightly 
longer than wide at base. Style dusky, rounded at tip and con- 
stricted at base, provided with long spines. Anal plate pale, 
apex nearly straight, but a little curved in, never rounded nor much 
indented. Wings small, usually normal in venation, often one of 
the two varies in venation but cases in which both right and left 
wings are abnormal is rare. 
Apterous viviparous female. Body with spines, pale, small, 
length, 1.45 mm. Width of abdomen, .9 mm. © Head the color of 
body. Eyes dark red. Antenna arising from side of head; sixth 
including spur and apical half of fifth dusky, the rest color of head, 
length of articles: III, .4mm.; IV, .23 mm.; V, .2 mm.; VI, .1 mm.; 
spur, .4 mm. Thorax and abdomen compressed, hairy, pale. 
Legs pale, except dusky tarsal joints. Cornicles pale, shape as in 
alate form, style, with spines, pale, anal plate as in alate. 
Host plant: Abies balsam. 
Locality: San Francisco. 
Date of collection: April 10, 1915. 
