Perreyia ruficollis Cameron, 1911:329, ♀. ♀, British Guiana (Georgetown Museum); Schmidt & Smith, 2006Schmidt, S. & Smith, D.R. 2006. An annotated systematic world catalogue of the Pergidae (Hymenoptera). Contributions of the American Entomological Institute 34 (3):1-207., Syntype ♀ (BMNH). - As Decameria ruficollis: - Smith, 1990Smith, D.R. 1990. A synopsis of the sawflies (Hymenoptera, Symphyta) of America south of the United States: Pergidae. Revista Brasileira de Entomologia 34:7-200.:86 (comb. nov.). - As Lophyroides ruficollis: - Schmidt & Smith, 2006Schmidt, S. & Smith, D.R. 2006. An annotated systematic world catalogue of the Pergidae (Hymenoptera). Contributions of the American Entomological Institute 34 (3):1-207. (listed [This species belongs, contrary to Benson & Conde (1938), to Decameria, and not to Lophyroides (now a synonym of Perreyia)]).
Lophyroides melangastra Rohwer, 1921:163, ♀. Holotype ♀, British Guiana, 1908 (BMNH, leg. J. Rodway). Synonymized with Lophyroides melanogaster Benson & Conde, 1938 by Benson & Conde, 1938Benson, R.B. & Conde, O. 1938. Revision der neotropischen Perreyiinae (Hym. Tenthredinidae). Revista de Entomologia (Rio de Janeiro) 9:121-154.:134.
Lophyroides melanogaster Benson & Conde, 1938:134 Replacement name for Perreyia ruficollis Cameron, 1911 by Benson & Conde, 1938Benson, R.B. & Conde, O. 1938. Revision der neotropischen Perreyiinae (Hym. Tenthredinidae). Revista de Entomologia (Rio de Janeiro) 9:121-154.:134 (Homonym of Lophyroides ruficollis Cameron, 1883). - Benson & Conde, 1938Benson, R.B. & Conde, O. 1938. Revision der neotropischen Perreyiinae (Hym. Tenthredinidae). Revista de Entomologia (Rio de Janeiro) 9:121-154.:134 (comb. nov.).