Plectonotum neoruficolle, nom. nov. (Figs. 16, 39, 77-78, 108, 119) Plectonotum ruficolle Wittmer, 1988: 331, homonym of P.ruficolle Pic,1926 (= Hyponotum ruficolle (Pic, 1926)). Plectonotum neoruficolle Constantin, nom. nov., new name for P. ruficolle Wittmer, 1988. Type material: Holotype ♂ (NHMB): Peru: Loreto, Mariscal Ramon Castilla, Estirón [near Pebas] on Rio Ampiyacu [03°22′S, 72°00′W, written Rio Ampi Paco on original label], 28.III-09.IV.1970, leg. B. Malkin. Other material examined: A single male specimen, without abdomen, was collected with UV-light trap in the department of Madre de Dios at the CICRA [12°34′S, 70°06′W] biological station (Constantin & Chaboo, 2016). Pic (1926: 26) described as a new species Plectonotum ruficolle, from Chile, close to Plectonotum albocinctum Pic, 1926, published in the same page. Wittmer (1949) erected the new genus Hyponotum, designated P. albocinctum Pic as type-species and transferred P. ruficolle Pic to Hyponotum. Thus, Plectonotum ruficolle Wittmer, 1988 is a junior primary homonym of P. ruficolle Pic, 1926. A new name Plectonotum neoruficolle nom. nov., is proposed for P. ruficolle Wittmer, 1988.

Published as part of Constantin, Robert, 2020, A contribution to the genera Plectonotum Gorham and Hyponotum Wittmer, with the description of sixteen new species from Peru (Coleoptera, Cantharidae), pp. 1-27 in Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) (Pap. Avulsos Zool., S. Paulo) 60 (34) on page 22, DOI: 10.11606/1807-0205/2020.60.special-issue.34, http://zenodo.org/record/4637615