Bruchus quadratus Suffrian, 1870 . Species incertae sedis.

Bruchus quadratus Suffrian, 1870: p. 161 . “ Cuba ”. Syntype (s) deposited in the Gundlach collection of the MNHC. No specialist has yet had a chance to review these for proper generic placement (Alvarez Marin & Kingsolver, 1997).

Bruchus quadratus: Gemminger & Harold (1873), p. 3229 (catalog); Pic (1913), p. 43 (catalog).

Acanthoscelides quadratus: Blackwelder (1946), p. 761 (catalog, comb. nov.); Wilcox (1975), p. 6 (catalog); Johnson & Kingsolver (1981), p. 415 (catalog); Udayagiri & Wadhi (1989), p. 61 (catalog); Alvarez Marin & Kingsolver (1997), p. 218 (catalog).