178 PLANT LICE, 
mere tubercles. Thighs dark honey yellow, broadly tipped with 
black; tibia dusky reddish at the base. The dots on the abdomen 
are very distinct in the full grown individuals, the intermediate 
rows have six dots in a row. Just behind the middle of the 
abdomen, and occupying the place of the two middle dots in 
the fourth row, is usually a somewhat conspicuous black, conical 
protuberance. When crushed a louse stains the fingers red.” 
(Le Baron). 
Fig. 8 
Fig. 2. 
Fic. 150—Lachnus dentatus Le B.—Fig. 1—a, apterous viviparous female, side- 
view; b, dorsal view of same enlarged. Fig. 2—a, oviparous female of L. pini 
Linu; b, head and antenna of same, enlarged. Fig, 3—Eggs of L. pini. After 
Webster. 
