The Philippine journal of science. [Vol. 67, no. 1]

67, 2

Alexander: Tipulidae from Eastern Asia, XL

133

TRICHOCERA MIRABILIS Alexander.
Trichocera mirabilis ALEXANDER, Philip. Journ. Sci. 55 (1934) 20, 21.
The types were from Kongo San, Korea, taken in October by
Machida. NORTHERN KOREA, Yanchen, altitude 40 feet, October 6, 1937. OMPO, altitude 600 feet, November 17, 1937.
SEREN MOUNTAINS, altitude 1,800 feet, October 13, 1937 (Yankovsky).
TRICHOCERA LATILOBATA sp. nov. Plate 1, fig. 3; Plate 2, fig. 26.
General coloration dark blackish gray, prsescutum with two
still darker submedian stripes; legs brownish black; wings grayish subhyaline, prearcular field more whitened; stigma and a
small cloud on r-m pale brown; R2+3+4 longer than R2+3; abdomen, including hypopygium, brownish black; male hypopygium with bridge of basistyles entire; dististyle relatively short
and flattened, on mesal face beyond base with a broad-based
triangular lobe.
Male.-Length, about 5 millimeters; wing, 5.5.
Rostrum and palpi black. Antennae black, outer segments
paler. Head brownish black.
Mesonotal prescutum dark blackish gray with two still darker
submedian stripes; posterior sclerites of notum blackened,
sparsely pruinose, posterior border of scutellum somewhat
paler. Pleura brownish black, including dorsopleural membrane.
Halteres infuscated, base of stem yellow. Legs with fore coxse
brownish black, middle coxae testaceous, hind coxse yellow; trochanters yellow; remainder of legs brownish black, extreme
femoral bases yellow. Wings (Plate 1, fig. 3) grayish subhyaline, prearcular field more whitened; stigma and a small cloud
on r-m pale brown; veins brown. Venation: R2+3+4 longer than
R2+3; vein 2d A somewhat angularly bent on distal third.
Abdomen, including hypopygium, brownish black. Male hypopygium (Plate 2, fig. 26) with ventromesal lobes of basistyles,
b, forming a continuous bridge. Dististyle, d, relatively short
and flattened, on mesal face beyond base with a broad-based
triangular lobe. Gonapophyses, g, long and slender.
Habitat.-Northern Korea.
Holotype, male, Ompo, altitude 650 feet, August 11, 1937 (Yankovsky).
Trichocera latilobata is readily told from the other described
species of the genus by the continuous bridge of the basistyles,
in conjunction with the position and shape of the lobe on the
mesal face of the dististyle. In other species with a simple lobe