Claustrum: the structure uniting the wings in flight, whether by hooks, by a thickening of the margin, or by a jugum.
Clava: a club; the enlarged apical joints of a clubbed antenna: = clavola.
Claval suture: Hemiptera; at the base of hemelytra, separating the clavus.
Clavate: clubbed: thickening gradually toward the tip.
Clavate hairs: in Collembola, = tenent hairs.
Clavicornia: that series of beetles having the antennae more or less distinctly enlarged or clubbed at tip.
Clavicular lobe: Homoptera; that portion of hind wing behind anal veins.
Claviform: club-like in form; specifically, in Noctuid moths an elongate spot or mark extending from the t. a. line through the submedian interspace, toward and sometimes to the t.p. line.
Clavola: see clava.
Clavus: the club of an antenna lava and clavola: in Heteroptera, the oblong sclerite at the base of the inferior margin of the hemelytra: the knob at the end of the stigmal or radial veins in certain Hymenoptera.