Psyllidae of New Zealand — Tuthill 
Fig. 30 . Trioza dacrydii n. sp. a. Lateral aspect of 
male cauda; b, lateral aspect of female cauda. 
very strong discal impressions, slightly bulg- 
ing anteriorly. Genal processes conical, di- 
vergent from base, 0.6 as long as vertex, 
longer than medial suture. Antennae twice as 
long as width of head. Postocular sclerites 
large, strongly produced caudad. Pronotum 
short, not strongly depressed. Forewings 
broadly rounded apically, 2.5 times as long 
as wide, membrane with fine points in area 
behind cubitus; Rs moderately long, very 
slightly sinuate, marginal cells equal. Hind 
wings short, with prominent points through- 
121 
out. Metatibiae with serrate basal carina, 1 
outer and 3 inner apical spines. 
Male proctiger elongate, slightly roundly 
produced caudad, apex oblique. Forceps 
shorter than proctiger; in lateral view stout, 
sinuate to broad apex, with caudal portion 
produced as blunt tooth; in caudal view stout, 
evenly arched, with mesal angle of apex pro- 
duced as small, blunt, black tooth; in dorsal 
view almost evenly narrowed to blunt black 
tips. Female genital segment shorter than 
rest of abdomen, stout; dorsal valve strongly 
downcurved to truncate apex; ventral valve 
nearly as long as dorsal, blunt. 
HOLOTYPE, male, allotype, female, numer- 
ous paratypes. Mount Ruapehu, November 
17, taken from Dacrydium hi forme at 3,700- 
4,700 feet. Additional paratypes from the 
same locality on various dates in November 
and from Arthur’s Pass, February 5, swept 
from the same host. 
HOST PLANT: Dacrydium hi forme Pilger. 
This species shows no very close affinity to 
any of the other known New Zealand forms. 
Trioza adventicia n. sp. 
Fig. 31 
Length to tip of folded wings 3. 0-3. 5 mm. 
COLOR: General color of males chocolate 
brown, with white band of wax on first and 
last abdominal tergites. Forewings very faint- 
ly yellow, transparent, small black spot at 
anal angle. Females with head and thorax 
lighter brown. 
structure: Body surface finely punctate, 
with long sparse setae. Head as wide as meso- 
scutum. Vertex with sharp discal impressions, 
slightly bulging anteriorly. Genal processes 
short, blunt, divergent, 0.5 as long as vertex. 
Antennae 1.5 times as long as width of head. 
Thorax not very strongly arched. Pronotum 
not depressed below plane of vertex, roundly 
produced caudad medially. Forewings large, 
narrowed apically and angular, 3 times as long 
as wide, membrane without points except in 
small area at base; Rs short, nearly straight, 
marginal cells equal. Hind wings short. 
