Mentum with rounded teeth, centre tooth relatively broad and c2 teeth well separated (type IIA), fourth laterals only slightly reduced (type I-II).
Cytology: 4 relatively short polytene chromosomes with the thummi arm combination AB, CD, EF, G. Centromeres recognizably heterochromatic.LE1A1: 1-2c, 10-12, 3-2d, 9-4, 13-19 ie. as holomelas
Arm G with nucleolus near the centromere, followed by a constriction and a large median Balbiani ring; superficially similar to that of C. cucini.
Nucleoli in the long arms in both C and D; homologues often partially unpaired. All sequences, other than LE1A2 and LE1F2, have a Holarctic distribution.
LE1A2: 1-2c, 10, 8d-9, 2d-3, 12-11, 8c-4, 13-19
LE1C1: 1-6b, 11c-8, 15-12, 11h-d, 6gh, 17a-16, 7d-a, 6f-c, 17(a)b-22 i.e. as pilicornis, etc.
LE1D1: 1-3, 11-17, 8-4, 10-9, 18-24
LE1E1: 1-3e, 5-10b, 4-3f, 10c-13 ie. as aberratus, cucini, etc.
LE1F1: 1-10, 17-11, 18-23 ie. as aberratus, riihimakiensisF1, etc.
LE1F2: 1-8c, 12-17, 10-8d, 11, 18-23 ie. as riihimakiensisF2
Le1G1: Subterminal N, median BR.Found: Nunavut (was North West Territories) - Permanent Pond #78, Hazen, Ellesmere Island (81.82; -71.17) (Oliver & Corbet, 1966).
Alaska - Point Barrow, Pond B.R.
Russia - Lena delta.
Karyotype described by Kiknadze et al. (1996b) and redescribed by Wülker & Martin (2000), both as Sp. Le1.[ Return to Index| Go to References ]
Modified: 15 March 2021
Copyright © 2000-2021, Jon Martin.