18, 3 Uichanco: Philippine Psyllide 261 
are always present in Aphalara. The present genus is also 
distinguishable from Aphalaroida Crawford (14:38) as 
follows: Vertex flattened and longer in proportion to width than 
in the latter; antennz longer. The characters it has in common 
with Aphalaroida are as follows: Genz somewhat roundly 
swollen ventrad; short frons; slight arching of thorax; lateral 
termination of pronotum in a knoblike swelling; thickened, 
semiopaque wings, with pterostigma; absence of process on male 
anal valve. ; 
Haplaphalara dahli (Riibsaamen). Plate 2, fig. 16; Plate 3, fig. 23; 
Plate 4, fig. 41; Plate 5, fig. 51. 
Aphalara dahli RUBSAAMEN ’05: 23. 
Type locality——BISMARCK ARCHIPELAGO, Coast of Rabakaul, 
February 27, 1897 (Dahl). 
Male.—Length of body, 1.2 to 1.36 millimeters; width of 
head, 0.52 to 0.55; length of antennz, 0.72 to 0.78; length of fore- 
wings, 1.28 to 1.3, width, 0.54 to 0.56. Brownish yellow. More 
or less thickly mottled with very dark brown as follows: Vertex; 
antennal segments I and II; distal segment of labium; thoracic 
nota and pleurites; hind coxe; and abdominal tergites. Uni- 
formly dark brown: Eyes; genital segment; genital forceps; 
anal valve; frons; genz; clypeus; apical segment and distal half 
of subapical antennal segment; distal spines of hind tibiz; and 
ungues. Pale stramineous: Sternum; trochanters; femora; 
tibie; tarsi; abdominal sternites, with exceptions noted above; 
and antennal segments, except as otherwise indicated above and 
except distal portions of IV, V, and VII, which are pale brown. 
Ocelli light brownish red. A uniformly dark brown, subtrian- 
gular spot occupying apical fourth of forewings; another lighter 
brown, broadly and irregularly linear, transverse band at 
middle portion; and a third subbasal, broadly linear, somewhat 
transverse, brown band; veins irregularly spotted with dark 
brown. Body and appendages finely reticulate, sparsely cover- 
ed with moderately long hairs. 
Head slightly narrower than thorax, very slightly declivous, 
dorsal surface subconfluent with pronotum. Vertex flat, about 
one and two-thirds times as wide as long, nearly truncate 
at cephalic margin, slightly rounded down in front; a shal- 
low depression bordering anterior ocellus; caudal margin 
concave. Frons about one and two-thirds times as wide as ante- 
rior ocellus, visible from latter to base of clypeus; Jength 
subequal to width. Clypeus (cephalic aspect) subhemispher- 
