Part 43

Discal area: of a wing applies especially to the more central portion, or that area covered by the discal cell.

Discal bristles: Diptera; are inserted on the middle of the abdominal segments before the hind margin.

Discal cell: Lepidoptera; the large or median cell extending from the base of the wing toward the center: = radial cell (Comst.): in Diptera (Will.) = 1st medial 2 (Comst.): Odonata; = discoidal areolets, q.v.: Trichoptera, the cell between the forks of the radial sector, and separated from the 2d apical cell by a cross-vein.

Discal patch: in some male Hesperidae the oblique streak of specialized black scales on the disc of the primaries.

Discal vein: Lepidoptera; the cross-vein closing the discal or median cell extends from radius 5 to media 1.

Disciform: formed or shaped like a disc.

Discocellular nervure or vein: Lepidoptera; = discal vein, q.v.

Discoidal: relating to the disc, or middle = discal.

Discoidal area: the middle area or field: Trichoptera; that area of the tegmina between the posterior or anal and the anterior or costal areas = d. field.

Discoidal areolets: Odonata; a varying number of rows of cells on the outer side of the triangle between the short sector (M 4 of Comst.) and the upper sector of the triangle (Cu 1 of Comst.) = post-triangular cells := discal cells.

Discoidal cell: Hymenoptera (Norton) 1st medial 2, medial 3 and medial 4 (Comst.).

Discoidal field: see discoidal area.

Discoidal nervule: Lepidoptera; = media 1 (Comst.).

Discoidal triangle: Odonata - see triangle.

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.