270 
The Philippine Journal of Science 
1921 
at apex. Anal valve and genital forceps more thickly pubescent 
than the rest of body. 
Female. — Dorsal and ventral valves acute apicad, abruptly 
subconical, more densely pubescent than the rest of body. 
Dorsal valve about three-elevenths as long as abdomen, about 
one and a half times as long as thickness at base, somewhat 
elevated at border of anus. Ventral valve about two-thirds 
as long as dorsal, about as long as wide, abruptly produced 
apicad. 
Newly emerged female. — Bright yellow. Eyes grayish white. 
Last apical antennal segment black. Abdomen and legs subcon- 
colorous, lighter yellow than thorax. A white, transverse band 
on two or three proximal abdominal tergites. 
Nymph ( age unknown; balsam mounts). — Length of body, 
1.15 millimeters; width of head, including eyes, 0.44; length of 
antennae 0.4 ; length of forewing pads, 0.43, width, 0.22 ; length 
of abdomen, 0.56, width, 0.53. Body and appendages sparsely 
covered with moderately long hairs. 
Head subequal in width to thorax; about one and five-sixths 
times as wide as long, obtusely subangular at anterior margin. 
Eyes subhemispherical, about one-fifth as thick as total width 
of head. Antennae subequal in length to width of head, acutely 
pointed distad. 
Thorax about as long as wide, about as wide as thick. Hind 
legs about one-third as long as body; femora slightly arcuate 
entad; ungues strongly curved. Fore and middle legs subequal 
in length, slightly shorter than hind, in other respects similar 
to hind legs. Forewing pads about twice as long as wide, 
about one and one-sixth times as long as thorax, roundly sloping 
ectodistad at base ; apex subparallel to basal slope ; intermediate 
portion subequal in width throughout. 
Abdomen about as long as wide, subcircular from dorsal 
aspect; caudal margin rounded, without process. 
Luzon, Laguna, College of Agriculture, Los Banos, at an 
altitude of about 50 meters. Five males and five females on 
pins; seven nymphs on slide; reared from leaf galls on Alstonia 
scholaris B. Br. (Apocynacese) , May, 1917. College of Agri- 
culture accession No. 18322 {Uichanco) . 
This species is apparently of wide distribution in the Orient. 
The gall caused by the insect has been described from Bismarck 
Archipelago by Rubsaamen (’05 : 7) ; by Leeuwen-Reijnvaan 
from Java (’10 : 38) and from Celebes (’16 : 24) ; and by Uichanco 
from the Philippines (’19: 544, pi. 5, figs. 1 and 2; pi. 12, figs. 
