Wing length 2.54 (2.60-2.76) mm; squamal fringe with 17 (14-20) setae. AR 3.23 (3.04 -3.40).
Coloration largely yellow or greenish yellow and partly brown; scutum yellow stripes yellowish brown, scutellum yellow, postnotum brown; abdominal tergites entirely greenish yellow, hypopygium brown.
Thoracic setae - Acrostichal 17 (15-19); Dorsolateral 16 (12-18); Prealar 6-7; Scutellar 22 (18-28).
Legs with femur and tibia yellow but darking to brown along the tarsi. All tarsi with long setae, BR1 5.0 (4.0- 6.2); LR1 1.31 (1.25-1.35), LR2 0.55 (0.54-0.57), LR3 0.63 (0.61-0.67); Fore tarsus 0.23 (0.22-0.24) the length of the fore tibia.
Hypopygium and Superior volsella as in figure below; Inferior volsella almost globular. Gonostylus with straight inner margin, widest at basal third and tapering towards the apex.
Female:
Wing length 2.86 mm. Coloration as male.
Frontal tubercles 8 µm long, 5 µm wide; 25 clypeal setae.
Thoracic setae - Acrostichal 25; Dorsolateral 14; Prealar 6; Scutellar 28.
LR1 1.35; LR2 0.54; LR3 0.61.
Pupa, Larva and Cytology: not known.
Found: Type locality - Japan: Lake Kawaguchi (35.59°N, 136.79°E) and Lake Yamanaka (35.42°N, 138.79°E), Yamanashi Prefecture.