Larva a medium sized plumosus-type; ventral tubules well developed, posterior pair longer. Gular region pale, frontoclypeus normally not darkened, but may show slight darkening in about 2% larvae. Larvae are very difficult to distinguish from C. cloacalis pale headed form. Mentum (Fig. b) of type II, and c2 teeth notches on the c1 tooth (i.e. type I or III). Ventromentum (Fig. c) with about 39 - 44 striae. Pecten epipharyngis (Fig. a) with about 12 - 17 teeth. Mandible (Fig. e) of type II, with about 14 - 18 striae. Antennal segments (Fig. d) in the ratio 116 : 35 : 10 : 12 : 8 ; basal segment of antenna relatively long and narrow, about 3.5 - 5 times as long as wide; AR about 2.15 - 2.30.
Cytology: 4 pairs of chromosomes with the pseudothummi arm combination AE, BF, CD, G. All
chromosomes closely paired.
Arm G with an almost terminal nucleolus and sometimes a second approximately medial, with 2 Balbiani
rings, one medial and one (BR 3) about one quarter from distal end. Nucleolus in arm F, but may also be development of a nucleolus in arms A or C. The CD chromosome is about 90%, AE about 70% and arm G about 35% of the length of the BF chromosome. Polymorphism in arms A, D, E, and G.
Irradiation experiments suggest that the dominant male determining gene may be on arm G but some results suggest it is on arm B.
febA1: 1 - 2c, 10 - 12, 3i - 2d, 9 - 4, 13 - 19 as holomelas, cloacalis, etc (rare)
febA2: 1 - 2c, 15 - 13, 4 - 7, 10 - 12, 3 - 2d, 9 - 8, 16 - 19 (common)
feb B1: Puff (group 7) and some distal dark bands about 1/3 from end of arm?
febC1: 1, 14 - 11d, 6b - 5p, 15, 8 - 11c, 2 - 5p, 6gh, 17a - 16, 7d-a, 6f-c, 17b - 22 (Kiknadze)
febD1: 1 - 2, 17 - 12b, 10 - 7, 3g-a, 6 - 4, 12a - 11, 18 - 24, (Kiknadze)
febD2: 1 - 2, 17 - 15, 4 - 6, 3a-g, 7 - 10, 12b - 14, 12a - 11, 18 - 24
febE1: 1 - 3e, 10b - 3f, 10c - 13 known only as heterozygote
febE2: 1 - 2b, 5 - 10b, 3e - 2c, 4 - 3f, 10c - 13 as cloacalis
febF1: 1 - 2a, 10 - 2b, 11 - 23 as oppositus F1 (see Martin 1979)
Click here for the polytene chromosomes
Nucleoli and location of C-bands studied by Lentzios & Stocker (1979) and Lentzios et al. (1980).
Pupa: Length about 8.11 mm (7.9 - 8.5) infemales and about 7.8 mm in males. About 92 (87 - 97) recurved hooks on second segment in females, about 79 in males; about 214 (206 - 234) filaments on swim fin in females), about 208 in males. Spurs with about 4 spines, ranging from 3 - 5.