200. Mycotretus rhodosomus Lacordaire, 1842 Mycotretus rhodosomus Lacordaire, 1842: 166. Type locality: “ Brésil ”. Brachysphaenus (Iphiclus) nigromaculatus Kuhnt, 1909: 27. Type locality: “ Mexico ” syn. nov. (Fig. 25B). Mycotretus rhodosomus – Crotch 1876: 444. — Gemminger & Harold 1876: 3694. — Kuhnt 1909: 72; 1911: 53. — Blackwelder 1945: 467. — Guérin 1948: 20. — Alvarenga 1994: 34. — Skelley 1998b: 16. — Pecci-Maddalena et al. 2021a: 955. Brachysphaenus (Iphiclus) nigromaculatus Kuhnt 1911: 17. — Blackwelder 1945: 459. Mycotretus nigromaculatus – Delkeskamp 1939: 27. — Alvarenga 1994: 30. Primary type Lectotype, here designated (Fig. 35F) MEXICO • “TYPE [blue label, printed] \ TYPE. [printed] rhodosomus Ch [handwritten] \ LECTOTYPE [printed] Mycotretus rhodosomus Lacordaire, 1842 [red label, handwritten]”; UMZC. Other specimens examined BRAZIL • 1 ♂ (dissected); “ Rio de janeiro, 2/1944, O. Braga [handwritten] \ Mycotretus rhodosomus Lac [handwritten] J. Guerin. det. 194[printed]8[handwritten]”; MNRJ • 1 ♀ (dissected); “Coleção M. Alvarenga [printed] \ Homeotipo [printed] \ Rio de janeiro, 2/1944, O. Braga [handwritten] \ 1825 [printed] \ Mycotretus rhodosomus Lac [handwritten] J. Guerin. det. 194 [printed]8[handwritten] \ Comparado com tipo [printed] Mycotretus rhodosomus Lac, 1842 [handwritten] M. Alvarenga det. 1971 [printed]”; MNRJ. Distribution Mexico [?], Southeast Brazil. Remarks 1) Although the lectotype of M. nigromaculatus (Kuhnt) was not dissected, its general morphology and colour pattern are identical to those of the lectotype of M. rhodosomus Lacordaire. Therefore, here we synonymize M. nigromaculatus (Kuhnt) under M. rhodosomus Lacordaire. 2) We observed that the type locality “ Mexico ” of M. nigromaculatus cited by Kuhnt (1909) is likely wrong. Lacordaire (1842) mentioned that the type locality of M. rhodosomus is “ Brazil ” and all individuals examined by us are from Southeast Brazil. Aside from that, there is no mention of the name “ M. rhodosomus ” in Biologia Centrali-Americana (see Gorham 1888), a work for which hundreds of erotylids from Central America and Mexico were studied.

Published as part of Pecci-Maddalena, Italo Salvatore de Castro, Lopes-Andrade, Cristiano & Skelley, Paul, 2023, Catalogue of Mycotretus Lacordaire, 1842 (Coleoptera: Erotylidae: Tritomini): an annotated, illustrated and historical approach, pp. 1-182 in European Journal of Taxonomy 876 (1) on pages 154-155, DOI: 10.5852/ejt.2023.876.2149, http://zenodo.org/record/8095647