Forsyth describes the abdominal tergites of the adult male as largely dark with only a narrow pale posterior margin.
Larval Morphology: halophilus-type, i.e. with some development of posterior tubules (length about 0.12mm). Head capsule with frontoclypeus generally pale, gular darkened. Smaller species (temperature effect?), length about 11.3 mm. Mentum usually type II; centre tooth relatively narrow, with C2 teeth only partly separated on its shoulders(i.e. type I). Mentum width about half VHL. Ventromentum with about 45 striae. Pecten epipharyngis with about 11 - 14 irregular teeth. Basal antennal segment about 3.3x as long as wide.Mandible of type II, with about 13 - 15 striae near base. Ventromentum with about 45-55 striae.
Cytology: 4 polytene chromosomes, pseudothummi-complex arm combination (BF,CD,EA,G).
Arm G normally closely paired with a large nucleolus; another large nucleolus on
arm F. Only one Balbiani ring, in the middle of arm G, was visible in the specimens examined. Arm A with sequence A4 as found in Australian species; arm E with sequence
E1 of Australian species, and arm C appears to have the same sequence as C1 of C. forsythi (ie. as C1 of the Australian species). No polymorphism was seen in the available specimens.
thmA1: 1a-e, 11-10, 2c-1f, 3e-2d, 8-9, 3f-i, 12c-a, 4-7, 13-19 ie. as A4 of oppositus
(14A-14D8, 15E1, 15D-15C1, 14D9-15B, 15E2-10)
thmB1: Puff (group 7) hardly developed, with proximal dark bands (group 8) near distal end.
thmC1: 10A - 11E; ie. as C1 of forsythi and oppositus?
thmD1:
thmE1: 1 - 3e, 10b - 3f, 10c - 13 ie. as oppositus E1
(12A - 13D)
thmF1: appears to be 4A-5B1, 5D2-5B2, 5D3-6D
thmG1:
Click here to see the polytene chromosomes
Localities:
North Island:
Kerosene Creek, South Auckland (thermal) (NZ.78.1) (S.Ibarraran) (27-viii-2007)
Waiotapu Stream (thermal) (NZ.69.1) (D.J.Forsyth) 14-vi-1983