Chordotonal: responsive to vibrations; applied to the ear-like structures in Orthoptera,.
Chorion: the shell or covering membrane of an insect egg.
Chromatin: the minute granules that make up the chromoplasm of a cell nucleus.
Chromosome: one of the segments into which the chromoplasmic filaments of a cell nucleus breaks up just before indirect division.
Chrysalis or -id: applied specifically to the intermedial stage between larva and adult in butterflies: see pupa.
Chrysargyrus: silvery gilt.
Chyle: the food-mass after it has passed through the guard and is mixed with the secretions of the salivary glands and caecal structures, ready to be assimilated.
Chylific ventricle: the true stomach in which the chyle is prepared and digestion begins.
Cibarian: referring to the mouth parts.
Cicatricose: a surface having scars with elevated margins like those of small-pox.