Amblycerus mutatus Pic, 1927 . New combination.

Spermophagus testaceus Pic, 1922: p. 16 (not Pic (1917)), p. 302: name pre-occupied (Pic, 1927b). From labels: “Caparo, Trinidad / A. Heyne, Berlin-Wilm.” [Trinidad and Tobago]. Female syntype deposited in the MNHN. There is a “ Holotype ” label affixed to this specimen by J.M. Kingsolver. 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.

Amblycerus testaceus (sensu Pic, 1922): Blackwelder (1946), p. 763 (catalog, comb. nov.); Pfaffenberger (1985), p. 2 (checklist).

Spermophagus mutatus Pic, 1927b: p. 14 . New name for Spermophagus testaceus Pic, 1922 . Pic (1927b) incorrectly cited the name for this species in a lapsus as S. testaceus Pic (1912) instead of Pic (1922). This created confusion about which species he was providing a replacement name for.

Spermophagus mutatus: Udayagiri & Wadhi (1989), p. 16 (catalog, incorrectly stated as an unnecessary replacement name for S. testaceus Pic, 1917).

Spermophagus testaceicolor Pic, 1938a: p. 20 . New name for Spermophagus testaceus Pic, 1922 . Pic (1938a) seems to have misinterpreted his own new name from Pic (1927b), as he provided this unnecessary replacement name for this species, which in itself was a junior homonym as he had already applied the name to a species from Japan (Pic, 1917b).

Amblycerus testaceicolor: Udayagiri & Wadhi (1989), p. 16 (catalog, comb. nov.).