Acupalpa yalgoo sp. n. Fig. 21

Type material.

Holotype male, AUSTRALIA: Western Australia, 28 km W Yalgoo, [-28.35°, 116.683°], 2.ix.1981, G. A. Holloway (MEI029508) (AM). Paratype. AUSTRALIA: Western Australia: male, Great Victoria Desert, Officer Basin, NE Streich Mound, 24-28.ix.1991, McMillan (MEI165193) (WAM).

Diagnosis.

Frons profile rounded above antenna; antenna black; scutum grey to black; pleuron black; wing dark banded; femora black; tibia yellow in basal half; abdomen black, segments 1-3 orange, silver velutum absent.

Description.

Body length= 9.0-10.0 mm. Head. Frons wider than ocellar tubercle, profile rounded above antenna, pubescence sparse silver-grey, frontal vestiture as small dark setae, surface texture as irregular longitudinal striations, face broadly rounded, expansive, with dark or pale setae; gena with pale setae; parafacial with short setae towards gena; mouthparts elongate; palpus brown-black, narrowly cylindrical; occiput overlain with sparse, silver-grey pubescence; antennal base flat; frons roughly level with eye in profile; antennal length shorter than head; scape black, length approximately equal to flagellum, scape with sparse black setae; flagellum black. Thorax. Scutum light grey to black, setal bases glossy black; scutellum overlain with dense, matt-black pubescence; pleuron black, overlain with sparse silver-grey pubescence; wing markings dark banded [discal band broad], dark yellow basally; haltere knob orange-yellow; coxae black; femora brown to black; tibia yellow in basal 1/2, dark in distal 1/2; tarsi black, basitarsi pale, dark distally, rest of tarsomeres dark. Scutal chaetotaxy: np, 4-5; sa, 1; pa, 1; dc, 3; sc, 2. Abdomen. Segments 1-3 orange, remaining segments black, silver velutum absent; terminalia dark.

Comments.

Acupalpa yalgoo sp. n. is a western species similar to Acupalpa semirufa and Acupalpa glossa sp. n., but differs from both in leg colouration and wing patterning.

Etymology .

The specific epithet is derived from the type locality of this species, near the Western Australian township of Yalgoo.