Appendicial: supplementary: relating to appendices.
Appendicle: a small appendix: in some bees, a small sclerite at tip of labrum.
Appendiculate: bearing appendages; said of antennae where the joints have articulated appendages; of tarsal claws that have membranous processes at base.
Appendiculate cell: Hymenoptera; is on costa just beyond 2d radius 1 and 2.
Appendigerous: bearing appendages.
Appendix: a supplementary or additional piece or part, added to or attached to another: in Heteroptera; = cuneus, q.v.
Appress -ed: to press against; closely applied to.
Approximate: near to; applies to antennae inserted close together.
Aptera: those that have no wings: an ordinal term formerly employed for fleas, lice and other wingless forms now distributed in other orders: later used for the simplest or lowest insects, including the Thysanura and Collembola.
Apterodicera: wingless, with two antennae.