Description and metrics based on Chattopadhyay et al. (1991)
This is potentially a member of the C. flaviplumus complex
Adult:
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Differs from C. samoensis where the frontal tubercles are longer (33-38 micron); the LR is greater (1.82-1.96); and the fore Ta5 is relatively longer (0.35-0.4 of the length of fore Ti).
Pupa: Length 6.51 (5.99-6.61) µm in males, 7.21 (7.01-7.53) in females. Colour brown, but pupal exuviae pale brown. Frontal tubercles 75 µm long and 57 µm wide at base, subapical seta 39 µm long.
Thorax rugose, wing sheath 1.69 mm long.
About 84-96 hooklets on tergite II, tergites II-VII with median shagreen, tergite VIII with 2 median patches of shagreen. Pedes spurii A caudolateral on segments IV-Vii, pedes spurii B caudolateral on segment II. Tergite I bare, tergite II-VII with median shagreen, terite VIII with 2 median patches of shagreen.
Caudolateral spurs of segment VIII with 2-4 spines.
Fourth instar larva: a small to medium plumosus type (8.41-9.83 mm), with anterior VT shorter than posterior pair; anal tubules tubular, about 340 µm long.
Head capsule described as brown, but only mention of darkening is on the occipital margin.
Antenna with basal segment about 2.7 times longer than wide, Ring organ only about a quarter up from base; AR 1.86; blade 390 µm, accessory blade 150 µm long; ratio of antennal segments (micron): 80 : 25 : 9 : 6 : 3.
Mentum shown as type I-II, i.e. 4th laterals appear slightly reduced, but laterals noted as gradually reducing in size.
Pecten epipharyngis with 14 teeth. Premandible with outer tooth longer.
Mandible shown with 3rd inner tooth only partially separated and pigmented.
The most obvious difference from the larva of C. samoensis is that antennal segment A4 of that species is longer than A3, while the relative lengths are reversed in this species.
Cytology - not known.
Found: West Bengal - Berhampur, Farakka, Burdwan.