Mouthparts of C. cucini
a. Pecten epipharyngis with relatively uneven teeth; b. Antenna with relatively long basal segment; c. Mentum with relatively shallow curve, 1st laterals pointing outwards, and 4th laterals quite reduced (type III),
d. Ventromentum e. Mandible with the 3rd inner tooth pale but separated to varying extents (type II-IIIA).

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