516 
PACIFIC SCIENCE, Vol. VII, October, 1953 
= .16 mm. 
Fig. 3. P. varipes (Skuse). a. Ninth tergum; h, male 
genitalia (ventral aspect). 
are 13 segmented, the apical 4 segments are 
very closely joined. Thorax: With abundant 
long pile down the dorsocentral areas, around 
the margins, and on the scutellum. There are 
10 teeth in the anterior comb and 12 in the 
posterior. The stems of the halteres are yellow- 
ish, the knobs are dark brown to black. Legs: 
The front tibiae have 3 spines arranged in a 
transverse row near the middle of the segment. 
Seven spines are in the apical set and the apical 
spur is nearly equal in size to the spines (Fig. 
2a). The hind tibiae are clavate, at their apices 
they are about equal in width to the widest 
portion of the femora. The tarsal subsegments 
are strongly swollen. The basitarsus is not as 
wide as the apex of the tibia and is about 
twice as long as wide (Fig. 2h). Wings: Nearly 
hyaline, very faintly fumose. The stigma is 
brown in color and oval in shape. The costa 
extends to about halfway between the tips of 
veins Rs and Mi. The anterior veins are brown. 
and the posteriors are colorless or but slightly 
yellowed . The venation is typical for the genus . 
Abdomen: About equal in length to the re- 
mainder of the body. Compared to varipes and 
related species, the abdomen is rather sparsely 
pilose. Genitalia: The ninth tergum is over 
twice as broad as long and is straight or very 
slightly convex on the hind margin (Fig. 2c). 
The ninth sternum is cleft 0.3 to 0.25 of its 
length on the hind margin and has a tume- 
scence in the middle of this concavity. The 
claspers are simple and are slightly pointed 
at their apices (Fig. 2d). 
length: Body, 3.6 mm.; wings, 3.8 mm. 
female: Unknown. 
Holotype male, Chateau Track, National 
Park, Feb. 27, 1949 (R. A. Harrison). Eight 
paratypes, all males: one same data as type; 
one from Mangatepopo, National Park, Feb, 
26, 1949 (R. A. Harrison) and six from ” Above 
Mangatepopo Hut,” National Park, Feb. 26, 
1949 (R. A. Harrison). 
The type and four paratypes have been re- 
turned to Mr. Harrison, Department of Scien- 
tific and Industrial Research, Auckland, New 
Zealand, One paratype has been deposited in 
the British Museum (Natural History), one 
is at the U. S. National Museum, one in the 
Bishop Museum, Honolulu, Hawaii, and one 
is at the University of Hawaii. 
Philia insolita (Hutton) 
Fig. Aa-c 
Dilophus insolitus Hutton, 1901, New Zealand 
Inst., Trans. 34: 193. 
This species has been adequately described, 
except for genital characters, in my paper on 
the Pacific Philia (Hardy, 1951, Hawaii. Ent. 
Soc., Proc. 14: 264-265). It is related to P. 
segnis (Hutton) and P. crinata Hardy and is 
distinguished by the characteristics given in 
the above key and by the male genitalia as in 
Figures. Ab, c, 6c, \d, and as described below. 
MALE GENITALIA: The ninth tergum is about 
1.3 times as wide as long, and the hind margin 
