Plecia — Hardy 
207 
vergent and terminate in a large apical spine, 
the claspers are more pointed apically, and the 
posterior lateral margins of the ninth sternum 
are developed into slender lobes (Fig. 17a). 
male. Head: Black, including appendages. 
Antennae short, compact, apparently 9-seg- 
mented. Ocellar tubercle large and conspicu- 
ous. Thorax: Dull red with three reddish -brown 
to black vittae extending longitudinally down 
the mesonotum. Lower portion of pleura red, 
upper portion brownish red. Scutellum red 
with a black line through the middle. Halteres 
yellow-red, tinged with brown on their knobs. 
Legs: Coxae, trochanters, and bases of femora 
rufous, remainder brown tinged with rufous. 
Wings: As in decora, faintly fumose, vein R2+3 
at about a 45° angle to R4+5. Abdomen and 
genitalia: Dark brown to black. Ninth tergum 
with a narrow V-shaped cleft in middle of hind 
margin, extending nearly to base of segment; 
the posterior lateral margins are strongly lo- 
bate, sharp pointed at apices. The inner mar- 
gins of tergum are very densely covered with 
short black hair (Fig. lib). The ninth sternum 
is scarcely half as long as the tergum, is about 
two times wider than long, and has a sharp, 
slender spinelike lobe on each posterior lateral 
margin, also a small rounded knoblike lobe 
just inside each clasper. Claspers rather slen- 
der, four times longer than wide, shaped as in 
Figure 17 a, as seen from a dorsal view. Each 
clasper with a sharp pointed lobe near base 
arising from dorsal surface, visible from lat- 
eral or end view. Aedeagus with a pair of rod- 
like accessory structures, these are slightly 
curved at apices. 
Length: Body, 3.0 mm.; wings, 4.5 mm. 
female: Fitting the above description in 
most respects. The front has a rather well- 
developed keel down the middle. The meso- 
notal vittae vary from brownish-red to black. 
Length: Body, 3.5 mm.; wings, 5.5 mm. 
Holotype male and allotype female, Wissel- 
meren, Obano, Dutch New Guinea, 1770 m., 
Aug. 9, 1955 (J. L. Gressitt) . Twenty-five 
paratypes, 13 c7cf and 12 $ 9 from follow- 
ing localities in New Guinea: same as type; 
Wisselmeren, Paniai, Sept. -Nov. 1949 (H. 
Boschma); Mt. Wilhelm, 3000 m., July 4, 
1955 (J. L. Gressitt); Wisselmeren, Okaitadi, 
1800 m., Aug. 7, 1955 ( J. L. Gressitt); Daulo 
Pass, 2400 m., (Asaro-Chimbu div.) June 15, 
1955 (J. L. Gressitt); and Mist Camp, 1800 
m., 12-1-1939 (L. J. Toxopeus). 
Type, allotype, and a series of paratypes re- 
turned to the Bernice P. Bishop Museum. Re- 
mainder of paratypes distributed among the 
following collections: Rijksmuseum v. Na- 
tuurlijke Historie, Leiden; U. S. National 
Museum; British Museum (Natural History); 
and the University of Hawaii. 
Plecia malayaensis Hardy 
Fig. 18 a, b 
Plecia malayaensis Hardy, 1948, Kans. Ent. Soc. 
Jour. 21: 36. New name for Plecia minor 
Edwards, 1928, Jour. Fed. Malay States 
Mus. 14: 44, nec P. minor Jaennicki, 1867, 
Senckenb. Naturf. Gesell. Abhandl. 4: 318. 
Related to P. inconspicua Hardy, from Papua, 
but differentiated by the truncate lobes of the 
Fig. 18 . Plecia malayaensis Hardy, a , Ninth sternum; 
b , ninth tergum. 
