Taumacera medvedevi nom. nov.

Acroxena nigricornis Medvedev, 1992: 75 (original description, junior secondary homonym, nec Platyxantha nigricornis Baly, 1864)

Type material examined. Acroxena nigricornis Medvedev, 1992: HOLOTYPE (photograph): ♂, ‘Вьетнам [= Vietnam] / o. Байкинь [= Baikin Island] / 2-3.IV.1987. [w, h] // Acroxena / nigricornis / L. Medv. [h] / L. N. Medvedev det. 19 [p] 89 [w, h] // Holotypus [r, p]’ (LMRM).

Comments. Due to the new synonymy of Acroxena with Taumacera, Acroxena nigricornis Medvedev, 1992 becomes a junior secondary homonym of T. nigricornis (Baly, 1864) and is replaced here with a new substitute name T. medvedevi nom. nov.