380 S. MATSUMURA 
the middle of the 2nd ventral segment; abdomen long, cornicles very short, 
shorter than wide, genital plate fuscous; legs yellowish, knees, tibiae at the 
apices, and tarsi, infuscated. 
Length of body 4.2 mm.; anntehnae 1.5 mm. 
Grown larvae — Fuscous, grayish pulverous, and oblong in form ; antennae 
robust, yellowish, apex of each joint, except the first 2 joints, fuscous; rost- 
rum reaches to the first ventral segment ; thorax and abdomen above with 2 
fuscous stripes; the last 3 dorsal abdominal segments each with a pair of 
fuscous pots ; cornicles black, short; legs yellow, both ends of the tibiae, and 
the tarsi fuscous, 
Length of body 4.2 mm.; antennae 1.5 mm. 
Hab. — Hokkaido (Sapporo). 
F. P. — Abies sachalinensis. 
Norn. Jap. — Hanenaga-öabtira. 
16. Lachnus laricicolus n. sp. 
Winged viviparous female— Body long oval, black, head reddish brown; 
antennae fuscous, the 2nd and 3rd joints yellowish, the 4th much shorter 
than the 5th, the 6th short and fusiform, anterhinarial small, and the demarka- 
tion between the ante- and postrhinarial indistinct, the 3rd with 10 and the 
followings each with one roundish sensorium ; rostrum long, reaching to the 
abdomen, broad hastate; thorax shinining, at the anterior angles of the me- 
sonotum reddish brown; wings hyaline, veins fulvous, media obsolete and 
hyaline, cubitus and stigma fuscous, stigmatic nervure short and straight; ab- 
domen oval, cornicles short, conical, with numerous short hairs; genital plate 
rounded ; legs fuscous, femora at the extreme bases and tibiae, except both 
ends, yellowish. 
Length of body 2.5 mm.; exp. tegm. 9 mm.; antennae 1.5 mm. 
Apterous viviparous female — Nearly the same as the winged viviparous 
female, except the body somewhat paler, fuscous spotted, antennae paler, 
rostrum longer, reaching to the 2nd abdominal segment, at the basal half 
