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The length of the body varies around 1.5 to 1.8mm. The body is dark brown with the foretibiae, bases of the femora and the apices of the mid- and hindtibiae a yellowish brown. The forewings are gray-brown except for the basal quarter, which is almost white. The apices of antennal segment 2 and all of segment 3 are yellow to yellowish brown. All other antennal segments are brown. The head is broader than long. Ocellar setae pair 3 is inside the ocellar triangle and posterior to the anterior ocellus. The antennae are 8 segmented. The pronotum has 3 pairs (occasionally 4) of posteromarginal setae. The metanotum is reticulate, and the reticles have short wrinkles. The forevein on the forewing has 5 to 8 distal setae. Abdominal tergite 2 has 3 lateral setae and tergite 8 has a complete posteromarginal comb with irregularly spaced microtrichia. Tergite 8 has 2 pairs of campaniform sensilla. Sternite 1 has 3 anteromedial setae, and sternites 3 to 7 each have a transverse row of accessory setae. On males, sternites 3 to 7 each have a transversely elongate glandular area (Nakahara 1994).