Bibionidae of New Zealand — HARDY 
= .I6 mm. 
Fig. 6. P. segnis (Hutton), a. Apex of front tibia 
(lateral aspect); b, front tibia, median portion; c, ninth 
tergum of male. 
scare the basal 3 or more segments in most 
specimens (Fig. la). The face is not at all 
produced, its margin is sunken below the eye 
margins and is not visible from a lateral view. 
The antennae are apparently about 9 seg- 
mented. The flagellum is clavate in shape, and 
the segments are so closely joined that they 
cannot be accurately counted. The antennae 
project downward (Fig. la) rather than up- 
ward as is the usual condition in Philia. The 
labella and palpi are largely hidden beneath 
the margins of the compound eyes. Thorax: 
With rather long black dorsocentral and mar- 
ginal hairs. The scutellum has long hairs 
around its hind margin. The halteres are black 
519 
except for a yellowish tinge on their bases. 
Legs: With all segments slender. The front 
tibiae have two sets of spines, composed of 
two spines each, above the apical set. The 
first two spines are close together and are 
situated at about the basal one third of the 
segment. The second set has the spines more 
widely spaced and situated near the apical two 
thirds of the segment (Fig. lb). The apical 
spur is small, approximately equal in size to 
the spines. The segments of the hind tarsi 
are slender, not at all swollen. Wings: Very 
faintly tinged, almost hyaline. The stigma is 
light brown and is oblong in shape. The an- 
terior veins are dark brown, the posteriors 
are hyaline to faintly yellowish. The costa 
extends about 0.4 the distance between veins 
Rs and Mi. The m crossvein and the bases of 
veins Mi-1-2 and Mi are completely lacking 
(Fig. id). Except for the basal portion, the 
anal vein is represented only by a slight fold 
in the wing. The shape of cell R is very dif- 
ferent from that of other Philia. The r-m 
crossvein is more nearly longitudinal in posi- 
tion, and there is no sharp angle at the point 
of junction of the r-m and vein Mi-1-2. Veins 
Mi-f-2 and Rs give the appearance of being a 
single continuous vein (Fig. id). Abdomen: 
About twice as long as the thorax and sparsely 
pilose. Genitalia: The ninth tergum is about 
twice as wide as long. The anterior margin is 
straight, or nearly so, and the posterior mar- 
gin is convex (Fig. le) . The sternum is about 
as wide as long and has a small tumescence 
in the middle of the hind margin. The con- 
cavity on the hind margin extends about 0.25 
the length of the segment. The claspers are 
rather sharply pointed at their apices (Fig. if) . 
length: Body, 2.63 mm.; wings, 2.26 mm. 
female: Head: Of usual shape for genus, 
the sclerotized portion in front of the eyes 
is about 0.3 as long as the eyes, and the por- 
tion behind the eyes is nearly as long as the 
eyes. The antennae appear to be 10 or 11 
segmented. The segments are very closely 
joined and are difficult to discern as in the 
male. The ocellar tubercle is not well devel- 
