18, 3 Uichanco: Philippine Psyllide 275 
tergites; hind tibiz and distal portions of hind femora (more 
darkly so). Body and appendages very sparsely and briefly 
pubescent. 
Head subequal in width to thorax, somewhat deflected. Ver- 
tex about one and four-fifths times as wide as long, concave at 
caudal margin between posterior ocelli, broadly arcuate at ce- 
phalic margin, rounded down in front, somewhat depressed ar- 
cuately from lateral margins ventrad. Genz slightly swollen 
ventrad to antennal tubercles. Eyes subglobular, about five- 
sixths as thick as distance from lateral margin to median suture 
of vertex. Clypeus subglobose, about one and a half times as 
thick as anterior ocellus. Anterior ocellus subhemispherical, 
not prominently set. Posterior ocelli subellipsoid, slightly small- 
er than anterior, somewhat prominently elevated due to up- 
curved edges of vertex. Antenne about five-eighths as long as 
width of head including eyes; diameter of segments I and II 
subequal and about one and one-third times that of III; the 
rest of the segments subequal in diameter to III; two apical 
setze, subequal in length to each other, and about three times 
as long as distal segment. 
Thorax robust, not strongly arched, about eight-ninths as 
long as thick; width subequal to length. Pronotum about three- 
fourths as long as vertex, about four and a half times as wide 
as long; a prominent, subhemispherical tubercle on lateroce- 
phalic margin. Mesoprescutum about one and a half times as 
long as pronotum, about twice as wide as long, subangular 
laterad, abruptly deflected at lateral and caudal margins. Me- 
soscutum about one and two-fifths times as long as mesopre- 
scutum, nearly twice as wide as long, broadly rounded down 
toward margins. Mesoscutellum about one-third as long as 
mesoscutum and about the same proportion to distance between 
points of attachment of axillary cords; anterolateral angles 
produced into abruptly subconical, somewhat divergent projec- 
tions. Pseudometanotum produced caudad into a prominent, 
erect, subconical projection. Wings hyaline, irregularly ob- 
ovate, broadly rounded at apex; R very slightly shorter than 
M+Cu; pterostigma slightly smaller than first marginal cell, 
subelliptical, with an inner, equally subelliptical area bounded 
by suture; first marginal cell subelliptical, about two and one- 
third times as long as wide and about twice area of second; 
