Discoidal vein: Diptera (Schiner), = media 2 (Comst.) anterior intercalary vein (Loew); Hymenopteran (Norton), = media 2 (Comst.), beyond the junction with the medial cross-vein: Trichoptera; the first and largest branch of the humeral vein. Discoideous: =discoidal. Discolored -orous: a different color from the surrounding, more or less contrasting; not concolorous. Discota: insects in which development of the adults is from imaginal discs: see adiscota. Discrete: distinctly separated. Discs: the abdominal motor processes of coleopterous larve. Discus: a disc; a somewhat flat circular part or area. Disjoined or Disjointed: see disjunctus. Disjunct: with head, thorax and abdomen separated by constrictions. Disjunctus: separated; standing apart. Disk: the central upper surface of any part; all the area within a margin; the central area of a wing: in Trichoptera, the obliquely ridged outer surface of hind femur in saltatoria. Dislocated: a stria, band or line interrupted in continuity, when the tips of the interrupted parts are not in a right line with each other. Disperses: with scattered markings, punctures or other small sculptures. Disposed: arranged or laid out. 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. Diurnal: such insects as are active or habitually fly by day only. Divaricable: able to spread apart or divaricate. Divaricate: straddling or spreading apart: when the wings are lapped at base and diverge behind: tarsal claws when arising at opposite sides of the joint and separating widely. Divergent: spreading out from a common base; in Coleoptera, tarsal claws are divergent when they spread out only a little; divaricate when they separate widely. Diverse: unequal: differing in size or shape: of various kinds. Diverticulum -la: an oft-shoot from a vessel or from the alimentary canal usually blind or sac-like: applied to the caecal tubes or pouches: any extensions or evaginations of the hypodermic. Dividens (vena): Trichoptera; 1st anal (Comst.). Dog-ear marks: in bees: small, subtriangular marks of light color, just below the antennae (Cockerell). Dolabriform: hatchet-shaped: compressed, with a prominent dilated keel and cylindrical base. Dolioloides: applied to obtect or coarctate pupae.