Larva a small to medium plumosus-type. Gular region and frontoclypeus slightly darkened. Mentum with pointed teeth; centre tooth high and almost parallel sided, side teeth moderately developed.
Cytology: 4 pairs of chromosomes with thummi arm
combination AB, CD, EF, G.
Arm G generally unpaired, with a large terminal nucleolus and at
least one Balbiani ring near the other end; rather similar to arm G
of plumosus. No nucleolus in any other arm.
Arm E generally unpaired.
Click here for the polytene chromosomes
Arm A:
Arm B: slight distal puff.
Found: Ontario -
Costello Creek, Algonquin Provincial Park
New
Hampshire - Lancaster
Creeks and pools.