Adult
Wing length - 3.52 mm, wing width - 0.88 mm, VR - 1.06; AR - 3.00, LR - 1.54.
Frontal tubercles present, length about 29 µm. Setae on clypeus - 16. Palpal segments 2-5 (micron): 46 : 278 : 267 : 418.
Thoracic setae: Acrostichals - at least 12; Dorsolaterals - 12 & 13, Prealars - 4; Scutellar in two rows, anterior - 6, posterior - 10.
Legs: Fore tarsi without a beard. Segment proportions (micron):
Female, pupa, and larva not known.
Found: Norfolk Island - Bridle Track (72-806).
Known only from a single male adult, 72-806 male 1. The hypopyium, particularly the superior volsella, suggests that it may be related to Chironomus samoensis, and the AR, LR, etc., are similar to those of that species.
This specimen is in the Australian National Insect Collection.