18 , 
Uichanco: Philippine Psyllidse 
285 
0.36; length of abdomen, 0.61, width, 1. Ventral surface of 
body somewhat convex, dorsal almost plane. Cephalic margin 
of head, costal margin and apex of forewing pads, and abdomen 
fringed with numerous subcylindrical hairs. Hairs slightly 
attenuate apicad, about seven times as long as thick, semitrans- 
lucent. Basal tubercle of hair about one and one-fourth times 
as thick as hair, about one and a half times as long as wide; 
insertion of hair visible through distal third of tubercle. Sur- 
faces of body and of wing pads less thickly covered with hairs; 
hairs of the same description as above. 
Head about one and four-sevenths times as wide as long; 
cephalic margin broadly rounded, with a deep, narrow, median 
cleft. Eyes subhemispherical ; caudal fourth partly hidden 
laterad by thorax ; about one-sixth as thick as total width of head. 
Antennae about half as long as width of head including eyes, 
somewhat thicker basad, slightly attenuate at apical third; a 
moderately long hair on apical segment distad ; another subdistad. 
Length of thorax apparently subequal to width. 1 2 Forewing 
pads about three times as long as wide, subacute apicad, rounded 
ectoproximad ; intermediate portion uniform in width through- 
out. Hind legs about two-thirds as long as body; fore and 
middle legs slightly shorter than hind; ungues sharply bent 
over at apical third. 3 
Abdomen subequal in length to thorax, about two-thirds as 
long as wide, subhemidiscoidal ; anal segments without process. 
Luzon, Laguna, Los Banos, at an altitude of about 50 me- 
ters, January, 1918. College of Agriculture accession No. 18174 
(Uichanco ) . Reared from leaf galls on Mallotus philippensis 
(Lam.) Muell.-Arg. (Euphorbiaceae) . For a description of the 
gall, see Uichanco ’19: 546, pi. 5, fig. 3; pi. 13, figs. 2 and 3. 
1 The lateral margins of the thorax are very much obscured by the wing- 
pads and are almost indistinguishable in the mounted specimens. 
8 No living specimens were available at the time of writing, and on this 
account color notes, presence or absence of waxy coating, and such other 
characters as can be studied only from fresh material are not reported here. 
The present description is based on balsam mounts and some fragmentary 
field notes. 
