Second and typically larger pair of antennae. Originates from second somite of head. Biramous, consisting of basal peduncle (typically composed of protopod, endopod, and scaphocerite) and distal flagellum. Bears pore of antennal gland.
(M. Stachowitsch, 1992)

Alternative forms for antenna : A2, antennae, antennal, antennary, second antenna.