Articulated apex: see clasp filament.
Articulation: the point or place where two parts or segments are joined: also applied to an individual joint or segment.
Articulatory epideme: the partly chitinized membrane by which the wings are attached to the thorax.
Artus: the organs of locomotion generally.
Asexual: applied where the reproductive organs are incompletely developed and eggs or young are produced by cell-budding: = parthenogenetic.
Ash-gray: a mixture of black and white, with a faint orange tinge: like ashes of anthracite coal.
Aspect: indicates the direction to which a surface faces or in which it is viewed; it may be dorsal, ventral, caudal, cephalic or lateral.
Asperities: surface roughenings or dot-like elevations.
Aspersus: rugged, with distinct elevated dots.
Assembling: gathering together; applied when a virgin female is exposed to attract such males as may be near, either to secure a pairing or merely to obtain specimens; also called sembling.