Acanthoscelides semiannulatus (Pic, 1929) . Combination confirmed.

Bruchus semiannulatus Pic, 1929a: p. 27 . From labels: “ Brazil. / Bahia / 1928 / In seeds of / Tiliaceae / Dr. G. Bondar” [Brazil]. Syntype female deposited in the MNHN. There is a “ Holotype ” label affixed to this specimen not added by M. Pic. However, the original publication does not designate a holotype nor does it indicate the number of specimens examined. Because no lectotype has been published, this must therefore be considered a syntype.

Bruchus semiannulatus: Pic (1929c), p. 35 (mentioned); Pic (1930a), p. 10 (mentioned).

Acanthoscelides semiannulatus: Blackwelder (1946), p. 761 (catalog, comb. nov.); Udayagiri & Wadhi (1989), p. 63 (catalog); Romero-Napoles et al. (2021), p. 214 (catalog).

Bruchus subannulatus: Bondar (1936), p. 43 (distribution, host association): Based on the location description and host association, this is almost certainly an error in transcription by Bondar. Bruchus subannulatus is therefore a nomen nudum; Zacher (1952), p. 463 (catalog); Kingsolver & Silva (1991), p. 413 (catalog).