A. C. tancrei (Graeser, 1892), medial part of the antenna, with nearly symmetrical bilateral processes, with curved sensilla chaetica in terminal position, and numerous thin, declining sensilla trichoidea, 60× magnification; B. C. tancrei (Graeser, 1892), stalk and dorsal processes with curved sensilla chaetica and thin, long, curved sensilla trichoidea, arranged in loose verticils, 150× magnification; C. C. tancrei (Graeser, 1892), stalk and ventral processes with relatively short sensilla chaetica in terminal position, and with thin, curved sensilla trichoidea, 150× magnification; D. C. tancrei (Graeser, 1892), distal part of the ventral processes with relatively short and weak sensilla chaetica in terminal and subterminal position, and with curved or flagellate sensilla trichoidea, 300× magnification; E. C. tancrei (Graeser, 1892), terminal part of a ventral process with weak, curved sensilla chaetica and with slightly curved sensilla trichoidea, 600× magnification; F. C. tancrei (Graeser, 1892), part of the stalk with sensilla trichoidea, densely covered by narrow, acute sensilla coeloconica, 1000× magnification.