A. C. tancrei (Graeser, 1892), medial part of the antenna, with some malformed segments and nearly symmetric bilateral processes, with curved sensilla chaetica in terminal position, and numerous thin, slightly curved and declining sensilla trichoidea, 60× magnification; B. C. tancrei (Graeser, 1892), stalk and dorsal processes with curved sensilla chaetica and curved thin sensilla trichoidea, arranged in loose verticils, 150× magnification; C. C. tancrei (Graeser, 1892), stalk and ventral processes with short sensilla chaetica and curved or flagellate sensilla trichoidea, arranged in verticils, 150× magnification; D. C. tancrei (Graeser, 1892), ventral processes with curved sensilla chaetica and numerous curved or flagellate sensilla trichoidea, 430× magnification; E. C. tancrei (Graeser, 1892), distal part of a ventral process with straight sensilla chaetica and flagellate sensilla trichoidea, 600× magnification; F. C. tancrei (Graeser, 1892), part of the stalk with sensilla trichoidea, densely covered by ivy-leaf shaped sensilla coeloconica, 4000× magnification.