Species 2a . Possibly C. decorus group

Larva a small to medium plumosus-type.    Dark gular region and a slightly darkened frontoclypeus.    Mentum with pointed teeth; centre (c1) tooth fairly narrow with short almost parallel sides, c2 teeth fairly well separated (type IV).

Cytology:  4 pairs of chromosomes with the thummi arm combination AB, CD, EF, G.
Arm G usually paired, nucleolus subterminal with a Balbiani ring (BR) nearby and a further BR about one third from other end.    Small nucleolus about centre of arm B.    Polymorphic in A.

Found: Ontario - Bear Creek, Carlsbad Springs.

            Pools in creek.

See also C. bifurcatus,    C. sp. b,    C. sp. c,    C. sp. j,    C. sp. z,    C. sp. 2b,    C. decorus gp. sp. 2,    C. sp. 2t,    C. decorus Joh.,    C. sp. 3h,    C. sp. 3i,    C. sp. 3j,    C. sp. 3r,    C. harpi,    C. 'blaylocki',    C. decorus R & F.,    C. mozleyi,    C. winneli.

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