Definitions For Glossary Terms



R-M CROSSVEIN TRACK    See radio-medial (r-m) setal line
RADIAL CELL
Anteroapical region of the forewing delimited between the postmarginal vein, stigmal vein, and second abscissa of the Radial Sector (RS2) setal line. [drawing]
RADIAL PROCESS
In Trichogrammatidae, basal stub-like portion of the premarginal vein (parastigma) that extends beyond the submarginal vein into the wing membrane. [drawing]
RADIAL VEIN    See postmarginal vein
RADICLE
Basal, neck-like or tubular constriction of the scape that articulates with the torulus, which can look like a separate antennal segment if long; sometimes called the radicula or radiculus. [drawing]
RADIO-MEDIAL (R-M) SETAL LINE
A setal line that extends longitudinally or posteroapically from the stigma. [drawing]
RADIUS (R) SETAL LINE
In Trichogrammatidae, a setal line that extends diagonally toward the anteroapical margin of the wing from the stigmal vein anterior to the second abscissa of Radial Sector (RS2) setal line. [drawing]
RAMOSE ANTENNA    See pectinate antenna
RAMUS
Finger-like projection or lobe of a funicular segment. [drawing]
RECTANGULAR
Having four sides, more or less at right angles, and with one dimension obviously longer than the other; sometimes used specifically for a rectangular shape that is longer than broad (compare with quadrate and quadrangular).
RETINACULUM
The ventrally curved portion of the posterior margin of the forewing, onto which hook the hamuli of the hind wing to couple the forewing and hind wing together during flight.
RHACHIS
(pl., rhachies) A pair of longitudinal ridges ventrally along the length of the fused second valvulae, which fit into the aulax of each first valvula to form the tongue-and-groove olistheter interlocking mechanism of the ovipositor stylets. [drawing]
RHINARIA    See longitudinal sensillum
RHOMBOIDAL
Diamond shaped.
RING SEGMENT    See anellus
RS1    See first abscissa of radial sector (rs1) setal line
RS2    See second abscissa of radial sector (rs2) setal line