Psyllidae of New Zealand — Tuthill 
115 
Trioza latiforceps n. sp. 
Fig. 24 
Length to tip of folded wings 3.50- 
4.25 mm. 
color: General color buff. Abdominal dor- 
sum dark brown. Forewings yellowish. 
structure: Head large, nearly as wide as 
mesoscutum. Vertex with deep discal foveae, 
bulging anteriorly. Genal processes short, 
stout, conical, divergent from base, 0.66 as 
long as vertex. Antennae twice as long as 
width of head. Eyes moderate in size. Post- 
ocular areas large. Pronotum long, vertical. 
Forewings large, broadly rounded, 2.5 times 
as long as wide, membrane thickened, with- 
out points; Rs long, somewhat sinuate, mar- 
ginal cells equal.- Hind wings large, thickly 
set with minute points. Metatibiae with small, 
serrate, basal carina, 1 outer and 3 inner apical 
spines. 
Male proctiger long, moderately produced 
caudad, with moderate-sized fringing setae. 
Forceps shorter than proctiger; in lateral view 
narrow basally, caudal margin straight, an- 
terior margin strongly swollen to truncate 
apex; in caudal view stout, nearly straight to 
incurved, black-tipped apex; in dorsal view 
tips broad, shallowly excavate, forming slight 
black tooth at each end. Female genital seg- 
ment longer than rest of abdomen, large 
basally, apical half attenuate, styliform; dorsal 
valve with tuft of long setae on basal portion, 
apical portion straight to sharp apex with very 
small retrorse spines near tip; ventral valve 
shorter than dorsal, apical styliform portion 
with short setae, upturned at tip. 
HOLOTYPE, male, allotype, female, 3 male 
and 6 female paratypes, near Balloon Hill, 
January 10 and 12, on Olearia lacunosa. 
HOST PLANT: Olearia lacunosa Hook. 
In sweeping the plants of Olearia lacunosa 
from which this species, T. scokina, and T. 
flavida were taken, it was obvious that two 
species were present because of the difference 
in size and color. This species and scobina were 
not distinguished, however, until the material 
Fig. 24. Trioza latiforceps n. sp. a, Lateral aspect of 
male cauda; b, lateral aspect of female cauda. 
was mounted and examined under the micro- 
scope. Although in size and color it does 
resemble scobina, it is readily distinguished 
from it by the smaller and more slender wings, 
the much stouter genal processes, and by the 
genitalia which are quite different in both 
sexes. 
