IS, 3 
Uichanco: Philippine Psyllidas 
265 
Female. — Genitalia about one-third total length of abdomen. 
Dorsal and ventral valves subequal in length and basal diameter, 
acutely pointed distad. 
Nymphs ( apparently full-grown living specimens). — Length 
of body, 2.25 millimeters; width of head, including eyes, 0.70; 
width of thorax, including wing pads, 1.6; length of forewing 
pads, 0.8, width, 0.4; length of abdomen, 1.8, width, 1.2. Dark 
orange yellow. Light yellow as follows : Antennae, wing pads, 
and legs. Eyes dark brick-red. A slightly raised, median, 
dorsal ridge visible from middle of pronotum to caudal end of 
abdomen. Body and appendages smooth and shiny, free from 
waxy coating, sparsely beset with short hairs. 
Head about three and a half times as wide as long, subequal 
in width to prothorax. Vertex rounded cephalad. Eyes moder- 
ately large, subhemispherical ; caudal portion recessive into pro- 
notum. Antennae subequal in length to width of vertex, slender, 
slightly tapering toward apex. 
Thorax not arched, about one and a half times as long as 
wide, subquadrangular at dorsum. Forewing pads about one 
and one-third times as long as thorax, semitranslucent, suban- 
gularly pointed ectodistad at apex. Legs stout and moderately 
long, sparsely pubescent; division between tibiae and tarsal 
segments indistinct; ungues broadly curved. 
Abdomen subcircular from dorsal aspect, very obtusely rounded 
caudad, shorter but wider than thorax, sparsely pubescent. 
Luzon, Laguna, Los Banos Falls, near Los Banos, at an al- 
titude of about 50 meters, January, 1917 ; Mount Maquiling, at 
altitudes of 70 to 150 meters, August, 1917. College of Agri- 
culture accession No. 18310 {Uichanco) . 
Numerous specimens of this insect were bred from leaf galls 
on Ficus variegata Blume (Moracese). For descriptions of the 
gall, see Riibsaamen ’99 : 261, and Uichanco ’19 : 546, PI. 6, figs. 
2, 4, and 5 ; pi. 13, fig. 1. The causative insect was tentatively re- 
ported in the latter paper as Pauropsylla montana sp. nov. 
(MS) ; but a further study of the specimens before me shows that 
their characters are those of P. udei Riibsaamen. The nymphs 
of the present collection differ from the one figured by Riib- 
saamen (’99 : 266, text fig. 13) in that the abdomen of the former 
is shorter in proportion to the body. 
Riibsaamen evidently made an error in reporting the host plant 
as a species of Rubiacese. The shape of the leaf in his text figure 
7, page 261, and the position, relative size, and form of the 
