Species g.    Undescribed species.

Male terminalia of C. species g.

Pupa: spur with about 3 spines.

Larva of the semi-reductus type, of medium size.    Posterior pair of ventral tubules longer, anal gills very long.    Gular dark and frontoclypeus also darkened.    Mentum with pointed teeth, centre tooth broad, c2 teeth moderately seperated but tend to continue edgeline of centre tooth (type I); 4th laterals markedly reduced (type III).
Cytology:    4 pairs of relatively short chromosomes with the thummi arm combination AB, CD, EF, G.nbsp; npsp; Centromeres not noticeably heterochromatic.
Arm G relatively short, normally paired at ends, with a small median nucleolus that may be polymorphic and a Balbiani ring near one end.    Main nucleolus in arm E at 3f.    No inversion polymorphism in specimens examined.

Arm A1:    1a - 2c, 10 - 12, 3i - 2d, 9 - 4, 13 - 19                ie. as holomelas
Arm E1:    1-3e, 5-10b, 4-3f, 10c-13                                    ie. as aberratus
Arm F1:   

Click here to see the polytene chromosomes.

Found: Ontario - Bat Lake, Algonquin Park.

            Amongst deep organic litter in highly eutrophic lake.

[ Return to Index | Go to References ]