Larva a salinarius type. Gular region and frontoclypeus completely brown. Head capsule smaller than that of its sibling C. tardus.
Cytology
: 4 pairs of chromosomes with the thummi arm combination: AB, CD, EF,
G.
According
to Butler (1982) there are
differences in arms F and G compared to C. tardus.
pri A1: 1 - 2c, 10 - 12c, 3 - 2d, 9 - 4, 13 - 19
ie. as tardus A1
pri E1: 1 - 3e, 5 - 10b, 4 - 3f, 10c - 13
ie. as tardus E1
Found: Alaska - Pond J, Barrow; Loon Pond, Prudhoe Bay.
Tundra ponds.
Description and a brief comment on the karyotype in Butler (1982).