Dissepiment: a partition wall: applied to the forming septa separating the coelom-sacs in the embryo; also the thin envelope about the members in obtect pupae.
Dissilient: bursting open elastically.
Distad: toward the distal end.
Distal: that part of a joint farthest from the body.
Distant: remote from: standing considerably apart.
Distichous: applied to antennae when lateral processes originate at the apices of the joints and bend forward at acute angles to them.
Distiproboscis: the outer third of the proboscis in Muscid flies, bearing the labella.
Distychus: bipartite: separated into two parts.
Ditrocha: Hymenoptera; that series having the trochanter two-jointed.
Diurnae: day fliers: applied to butterflies.