Plecia — Hardy 
215 
ing entirely rufous. The ninth tergum is cleft 
nearly to its base by a broad U-shaped con- 
cavity on the hind margin; the cleft is broader 
than each of the lateral lobes. The claspers are 
about two times longer than wide and are 
gradually tapered to a subacute apex. 
For a more complete description and figures 
refer to the original. 
Length: Body, 5.5 mm.; wings, 7.0 mm. 
type locality: West Flores, Lesser Sunda 
Islands. 
Type in the Deutsches Entomologisches 
Institut, Berlin. 
Plecia tenebrosa n. sp. 
Fig. 2 6a, b 
Related to P . erebea Skuse, from Australia, 
but the male genitalia are very different, as 
shown in Figures 2 6a and 10a. 
male: A moderately large predominantly 
dull-black species. Head: Antenna reddish 
Fig. 26. Plecia tenebrosa n. sp. a, Ninth sternum; 
b, ninth tergum. 
brown, with only seven distinct segments, the 
last two are closely joined. Mouth parts rather 
elongate, their length is about equal to the 
height of the head. Ocellar tubercle large, 
prominent. Thorax : Largely black humeri ru- 
fous, pleura and metanotum tinged with 
rufous in the ground color. Knobs of halteres 
black, stems brownish red. Legs: Dark brown 
to black, tinged with red; densely black haired. 
Segments slender. Wings: Light brown fu- 
mose, stigma slightly darker than the re- 
mainder of membrane. Vein R 2+3 slightly 
curved, nearly vertical and almost meeting tip 
of Ri at wing margin. The costa extends about 
one-third the distance between the tips of 
veins R 4+5 and Mi +2 . Abdomen and genitalia: 
Dark brown to black, all pile black. The ninth 
tergum is rather gently concave on hind mar- 
gin, the concavity extending only about one- 
third the length of the segment (Fig. 26b). 
The ninth sternum is slightly wider than long, 
the posterior lateral margins are rounded and 
are produced just a short distance beyond 
bases of claspers; the posterior median margin 
has a rather sharply pointed lobe. The claspers 
are rather large, simple, pointed at apices 
(Fig. 26a). 
Length: Body, 8.0 mm.; wings, 8.7 mm. 
Female unknown. 
Holotype male and three paratypes "Java 
coll. Winthem.” In the Naturhistorisches Mu- 
seum, Wien under the name " fulvicollis 
Type and one paratype returned to Vienna. 
One paratype in the Bernice P. Bishop Mu- 
seum and one in the University of Hawaii 
collection. 
Plecia tergorata Rondani 
Fig. 21a-c 
Plecia tergorata Rondani, 1875, Ann. del Mus. 
Civ. di Storia Nat. di Genova 8: 462. 
Plecia karnyi Edwards, 1927, Treubia 9: 363, 
fig. 3a, b. New synonymy. 
Edwards’ figure 3b of P. karnyi would seem to 
differ from tergorata by not having the claspers 
of the male joined and by the claspers being 
