Species j. C. decorus group

Male terminalia of C. sp. j.
A typical C. decorus-type hypopygium, with superior volsella similar to that of C. bifurcatus and C. maturus.

Pupa: pupal spur with about 4 spines.

Larva of the thummi-type, with anterior ventral tubules longer.    Dark gular region and frontoclypeus pale or with darkened edges.    Mentum with rounded teeth;  4th laterals reduced to height of 5th laterals (type II);  centre tooth high and fairly narrow, c2 teeth little more than notches (type I).    3rd inner tooth of mandible pale and not separated (type I).

Cytology:    4 pairs of chromosomes with thummi arm combination AB, CD, EF, G.
Arm G largely unpaired, although may be paired in middle.    Nucleolus subterminal,  Balbiani ring subterminal at the other end.    No nucleolus on other arms but large distal puff in arm B.

Found: New Brunswick - Kouchibouguac National Park
            Ontario - Algonquin Provincial Park; Bear Creek, Carlsbad Springs
            Quebec - Notch Road, Gatineaus.

            Slow moving creeks and pools.

See also C. 'bifurcatus',    C. sp. b,    C. sp. c,    C. sp. 2a,    C. sp. 2b,    C. decorus gp. sp. 2,    C. sp. 3h,    C. sp. 3i,    C. sp. 3j,    C. sp. 3r,    C. decorus Joh.,    C. harpi,    C. 'blaylocki',    C. decorus R & F.,    C. mozleyi,    C. winneli.

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