Antenodal cells: Odonata; in Agrionidae the cells included between the short sector (M 4 Comst.) and the upper sector of the triangle (Cu 1, Comst.), and between the quadrilateral (or quadrangle) and the vein descending from the nodus.
Antenodal cross veins: Odonata; extend between costa and subcosta, and between subcosta and media, from the base to the nodus, forming the ante-nodal or ante-cubital cells: = ante-cubital.
Antenodal costal spaces: Odonata; the cells between costa and subcosta, from the base to the nodus: = ante-cubitals.
Anteocular: the region just before the eye; specifically applied in Collembola to a peculiar structure of undefined function situated in front of the eyes: = prostemmatic.
Antepectus: the lower surface of the prothorax.
Antepenultimate: the last but two.
Anterior: in front; before; in Dip., that face of the leg which is visible from the front when the leg is laterally extended and bristles on that face are anterior.
Anterior branch of third vein, in Diptera (Will.), = radius 4 (Comst.).
Anterior field: Orthoptera; of tegmina, see costal field.
Anterior intercalary vein: Diptera; = media 2 (Comst.); of Loew = discoidal vein.