Larva a medium sized plumosus-type. Gular region darkened, frontoclypeus probably darkened. Mentum with pointed teeth; centre tooth relatively broad with diverging sides, side teeth, although well seperated, virtually continue line of centre tooth.
Cytology
: 4 pairs of chromosomes with the thummi arm combination
AB, CD, EF, G.
Centromeres heterochromatic, showing tendency to stick together to
form a centromere.
Large Balbiani ring (BR) near centre of closely paired arm G, with
constriction between
BR and centromere; another BR distal in the arm. Nucleolus
in arm B, just distal to the 4 characteristic bands; 1
or 2 nucleoli near the middle
of arm D. No polymorphism in small sample examined.
Arm A: 1a-e 2d - 3 12 - 10 2c - 1f 9 - 4 13 - 19
Arm E: 1 - 3e, 5 - 10b, 4 - 3f, 10 - 13
i.e as cingulatus,
tardus
and sp. 3b.
Arm F: 1 - 23
ie. Standard,
as piger
Click here to see the polytene chromosomes.
Found: California - Lake Davis, Plumas Co.
Sp. 23 of Wülker (Unpubl.). Some information on arm F given in Fig. 3 of Martin (1979).