100 
PACIFIC SCIENCE, Vol. VI, April, 1952 
extends its range from Arthur's Pass to 
Ruapehu. It is undoubtedly abundant on its 
host which is as yet unknown. 
Trioza falcata (Ferris and Klyver) 
Fig. 11 
1932 Powellia falcata Ferris and Klyver, New 
Zeal. Inst., Trans. 63: 39, 42, pis. 8, 9- 
Length to tip of folded wings 4.0-4. 5 mm. 
color: General color green to reddish 
brown unicolorous or commonly yellow- 
brown with green abdomen. Wings hyaline 
except light brown band along posterior 
margin. 
structure: Body surface finely rugose, 
with very short, sparse pubescence, longer on 
head and legs, white powdery wax deposit 
prominent along sides. Head slightly nar- 
rower than mesoscutum. Vertex deeply im- 
pressed discally, not overhanging anteriorly. 
Genal processes nearly parallel with plane of 
vertex, large, conical, blunt, 0.66 as long as 
vertex. Antennae twice as long as width of 
head. Pronotum short, depressed. Wings 
large. Forewings rounded apically, 2.5 times 
as long as wide, membrane with minute points 
behind cubitus and in some specimens a few 
in marginal area around to Rs (females seem 
to show these more than males); Rs long, 
sinuate, cubital cell somewhat larger than 
0.25 mm. 
I J i 
Fig. 11. Lateral aspect of female cauda of Trioza 
falcata (Ferris and Klyver). 
medial. Hind wings thickly set with promi- 
nent points. Metatibiae with serrate basal 
Carina, 1 outer and 3 inner apical spines. 
Male genitalia as described and figured by 
Ferris and Klyver. Female genitalia as in T. 
equalis (Ferris and Klyver) except with sharp 
sulcus across dorsal valve between anus and 
apex, ventral valve with distinct hump. 
Specimens of the species wer^ taken abun- 
dantly at Peel Forest, South Canterbury, Jan- 
uary 20; Mead’s Landing, Lake Hawea, Janu- 
ary 22; Whiskey Gulley, Tapanui, January 
25; Tuatapere, January 28; Oban, January 31; 
near Tokanui, February 3. 
Earlier in the season I was unable to obtain 
a single specimen in the type locality or else- 
where on North Island. This is perhaps be- 
cause of a seasonal appearance. Without ex- 
ception, those captured were taken on plants 
in shade or partial shade. 
HOST PLANT: Aristoteliu serrata (Forst.) Oliv. 
As recorded by Ferris and Klyver, this 
species forms pit galls on the leaves of its 
host. 
Trioza equalis (Ferris and Klyver) 
1932 Powellia equalis Ferris and Klyver, New 
Zeal. Inst., Trans. 63: 38, 47, pi. 11. 
The female specimen described by Ferris 
and Klyver under this name is very close to 
falcata and is probably that species. Two 
points in their description differ from the 
numerous females of falcata at hand, however; 
therefore, the name is maintained and perhaps 
future collecting and the eventual location of 
Myers’ collection will serve to clarify the 
status of equalis. 
In equalis the membrane in the apical half 
of the forewing is set with points [punctate]. 
In some of The females of falcata there are 
points in the marginal area as far as the radial 
sector, especially in the region of the alar 
radulae. A more important difference lies in 
the genitalia. The dorsal valve of equalis is 
figured by Ferris and Klyver as nearly straight 
to a bluntly pointed apex, whereas that of 
