Cortical: relating to the cortex or outer skin.
Corticinus: bark-like in sculpture, texture or color [vandyke brown].
Corvinus: crow-black; deep, shining black with a greenish lustre.
Coryphatus: = capillatus.
Corysterium: an abdominal glandular structure in certain females, secreting a glutinous covering for the eggs.
Cosmopolitan: species that occur throughout most of the world.
Cosmotropical: species that occur throughout the tropics.
Costa: any elevated ridge that is rounded at its crest: the thickened anterior margin of any wing, but usually the primaries: in Comstock, the vein extending along the anterior margin of the wing from base to the point of junction with subcosta.
Costal area: the area behind costal vein; see also, costal field.
Costal cell: the area inclosed between the costal and subcostal veins: in the plural, Comstock, are all the cells anteriorly margined by the costa; in Hymenoptera (Norton), includes the 1st, 2d and subcostal; of Packard, the 3d costal = 2d radial 1, and radial 2: in Diptera (Will.), it is the 2d costal.