Psyllidae of New Zealand — Tuthill 
117 
area large. Pronotum narrow, below plane of 
vertex. Forewings large, almost 3 times as 
long as wide, apex narrow but not acute, en- 
tire membrane, except along veins, with 
prominent points; Rs very long, sinuate, 
cubital cell slightly larger than medial. Hind 
wings 0.66 as long as forewings with similar 
points on membrane and on veins. Meta- 
tibiae with serrate basal carina, 1 outer and 
3 inner apical spines. 
Male genitalia large. Proctiger strongly 
swollen caudad, evenly narrowed to oblique 
apex. Forceps shorter than proctiger; in 
lateral view narrow basally, then swollen as 
figured, narrowed and incurved apically to 
blunt tips; in caudal view stout, nearly 
straight, tips incurved, sharp, touching. Fe- 
male genital segment large, longer than rest 
of abdomen, swollen basally, slender apically; 
dorsal valve with apical third attenuate to 
sharp apex, with very short setae except for 
prominent cluster dorsally on basal portion; 
ventral valve shorter than dorsal, attenuate 
Fig. 26. Trioza australis n. sp. a. Lateral aspect of 
male cauda; b, lateral aspect of female cauda. 
portion thickly set with short, stout setae, 
apex acute. 
HOLOTYPE, male, allotype, female, numer- 
ous paratypes, Oban, Stewart Island, Janu- 
ary 29, 30, 31, where they were abundant on 
the common muttonbird plant. 
HOST PLANT: Sene CIO rotundifolius Hook. 
Trioza styligera (Ferris and Klyver) 
1932 Powellia styligera Ferris and Klyver, New 
Zeal. Inst., Trans. 63: 38, 46, pi. 10. 
Two females collected in sweeping alpine 
vegetation on Mount Ruapehu, at 4,700- 
5,000 feet, November 17, seem to be this 
species. Although the area was examined care- 
fully on November 17, and the same and 
other similar areas were combed during the 
succeeding week, no additional specimens 
could be obtained. 
The host is completely unknown but I 
think it probable that it is a species of Olearia, 
Senecio, or one of the closely related Com- 
positae, as the species shows very marked 
similarity in structure to T. australis and other 
related forms. 
Trioza fasciata (Ferris and Klyver) 
Fig. 27 
1932 Powellia fasciata Ferris and Klyver, New 
Zeal. Inst., Trans. 63: 38, 45, pi. 11. 
Length to tip of folded wings 4. 0-4.5 mm. 
color: Variable from uniformly green or 
light brown to very dark brown with scutel- 
lum and legs green, abdominal tergites 
margined with red. Forewings uniformly em- 
browned or with various dark brown fascia 
with remainder of membrane transparent, 
usually either entire posterior margin of wing 
broadly brown or two fascia across basal half. 
structure: Additions to the original de- 
scription are: Head as wide as mesoscutum. 
Hind wings short, 0.6 as long as forewings. 
Metatibiae with serrate basal carina. 
Male proctiger broadly produced caudad, 
with small apical epiphysis. Forceps very 
