Psyllidae of New Zealand — TutHILL 
no wax apparent on any of the specimens at 
hand. Head and pronotum strongly deflexed. 
Head narrower than mesoscutum. Vertex flat, 
with circular discal impressions, slightly 
bulging anteriorly. Genal processes stout, 
conical, somewhat divergent, 0.7 as long as 
width of head. Eyes rounded. Postocular 
sclerites poorly developed. Thorax broad and 
rather flat. Pronotum not depressed below 
plane of vertex. Forewings rounded apically, 
with apex in costal half, 2.6 times as long as 
wide, membrane thickly set with very minute 
points, masked by pigment; Rs long, nearly 
straight, cubital cell much larger than medial. 
Metatibiae with small basal serrations, 1 outer 
and 3 inner apical spines. 
Male genitalia large. Proctiger with prom- 
inent apical epiphysis, broadly rounded from 
base. Forceps shorter than proctiger; in lateral 
view broad, anterior margin rounded; in 
caudal view moderately stout, slightly arched 
to sharp black tips, caudal surface concave. 
Female genital segment large, almost as long 
as rest of abdomen, unusually thick dorso- 
ventrally; dorsal valve with distinct hump 
bearing long setae, apex slender, blunt, with 
numerous short, slender setae, ventral line 
straight; ventral valve shorter than dorsal, 
acute apically. 
HOLOTYPE, female, allotype, male, 1 female 
and 2 male paratypes, from Hebe angusti folia, 
Takaka Hill, near Nelson, January 8 and 13. 
Additional paratypes: 2 from Hebe angustifolia, 
Whangamoa Saddle, near Nelson, January 16; 
1 Tawhai Falls, Tongariro National Park, 
November 26, swept from mixture of shrubs; 
7 swept from mixed shrubs at edge of Notho- 
fagus forest, 30 miles S.E. of Taupo. 
HOST PLANT: Hebe angustifolia A. Rich. 
(Probable.) 
I think that this is probably T. obfusca 
(Ferris and Klyver). It is certainly very close 
to the latter, but I find four discrepancies be- 
tween the specimens at hand and the descrip- 
tion and figures of obfusca. These are: (1) 
The antennae of this form are barely 1.5 times 
as long as the width of the head (the range of 
119 
Fig. 28 . Trioza obscura n. sp. a, Lateral aspect of 
male cauda; b, lateral aspect of female cauda. 
variation in the specimens at hand being 
7.5:8.9 to 7.2:10.7) whereas obfusca has an- 
tennae "scarcely twice as long as width of 
head"; (2) the cubital cell of the forewing is 
larger than in obfusca; (3) the abdomen is 
strongly sclerotized as opposed to "weakly 
sclerotic" in obfusca; (4) the dorsal valve of 
the female genital segment has a definite 
hump dorsally, the distance from the anus to 
the tip is fully twice the length of the anus, 
the apex is not set with stout retrorse setae as 
