Peltecanthon Pereira, 1953

Nunes, Luis Gabriel de O. A., Nunes, Rafael V. & Vaz-De, Fernando Z., 2020, Taxonomic revision of the South American subgenus Canthon (Peltecanthon) Pereira, 1953 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), European Journal of Taxonomy 594, pp. 1-27 : 3-4

publication ID	https://doi.org/ 10.5852/ejt.2020.594
publication LSID	lsid:zoobank.org:pub:53DE5999-628D-47F5-9973-67CC54D06BC6
DOI	https://doi.org/10.5281/zenodo.3664187
persistent identifier	https://treatment.plazi.org/id/36733D04-FFF7-FFDB-FDD0-FB92FAB1FA22
treatment provided by	Plazi
scientific name	Peltecanthon Pereira, 1953
status

Treatment

Peltecanthon Pereira, 1953: 396 .

Peltecanthon – Pereira & Martínez 1956: 94, 98, 182 — Martínez 1959: 26 — Halffter 1961: 230 — Vulcano & Pereira 1964: 573 — Halffter & Martínez 1967: 80.

Canthon (Peltecanthon) View in CoL – Halffter & Martínez 1977: 75 — Vaz-de-Mello 2000: 191 (species list) — Medina et al. 2003: 24, 38, 45 — Vaz-de-Mello et al. 2011: 52 (key) — Cupello & Vaz-de-Mello 2018: 18, 46 — Vaz-de-Mello & Cupello 2018a: 46.

Type-species

Peltecanthon staigi Pereira 1953 View in CoL , by original designation ( Pereira 1953).

Diagnosis

Among the Scarabaeinae , the tribe Deltochilini features the following characters: hind wing vein radio posterior 1 (RP1) with a small basal appendix and radio anterior 4 (RA4) clearly thinner than RP1 and basally fused with RP1 ( Tarasov & Dimitrov 2016). Among the Deltochilini , Canthon (Peltecanthon) can be differentiated by the following combination of characters: shiny pronotum and elytral disc, without tubercles or lateral carinae; ventral surface of the metafemora without anterior margin; and metafemora with elongated base, giving the femur a claviform shape ( Halffter & Martínez 1977; Vazde-Mello et al. 2011).

Key to the species of Canthon (Peltecanthon) View in CoL

1. Dorsal surface with blue, green and red metallic reflections ( Figs 1A View Fig , 3A View Fig , 5A View Fig , 7A View Fig ). Metafemur base narrow, claviform, ventral surface without anterior margin ( Figs 1B View Fig , 3B View Fig , 5B View Fig , 7B View Fig ) ........................... ............................................................................................2 Subgenus Peltecanthon Pereira, 1953 View in CoL

– Dorsal surface having other colours and reflections. Metafemur base wide, not claviform, ventral surface with or without anterior margin ..................................other Canthon View in CoL groups and subgenera

2. Dorsal surface with green metallic reflections ( Fig. 3A View Fig ). Metafemora with posterior longitudinal groove at their basal third ( Fig. 3B View Fig ). Hypomera lacking transverse carina ( Fig. 3C View Fig ). Pygidium basal margin (which separates it from pro-pygidium) lacking carina ( Fig. 3D View Fig ). Paramere apical margin sinuous ( Fig. 4A View Fig ). Brazilian Atlantic Forest (from Bahia to Rio de Janeiro) ..................................... ........................................................................................ Canthon (Peltecanthon) haroldi View in CoL nom. nov.

– Dorsal surface with blue, green and/or red reflections ( Figs 1A View Fig , 5A View Fig , 7A View Fig ). Metafemur base is smooth ( Fig. 7A View Fig ) or with punctures ( Figs 1A View Fig , 5A View Fig ), always lacking longitudinal groove. Hypomera with transverse carina ( Figs 1C View Fig , 5C View Fig , 7C View Fig ). Pygidium basal margin (which separates it from pro-pygidium) carinate (with a V-shaped projection) ( Figs 1D View Fig , 5D View Fig , 7D View Fig ). Paramere apical margin straight, substraight or sinuous ............................................................................................................................. 3

3. Elytra and pronotum of different colours; dorsal surface of elytra blue, pronotum with green and red reflections ( Fig. 5A View Fig ). Hypomera with transverse carina strongly marked and interrupted near external margin ( Fig. 5C View Fig ). Pygidium basal margin with weak carina ( Fig. 5D View Fig ). Paramere apical margin strongly sinuous ( Fig. 6A View Fig ). Southern Brazilian Atlantic Forest (Minas Gerais, Espírito Santo and Rio de Janeiro ............................................ Canthon (Peltecanthon) splendidus Schmidt, 1922 View in CoL

– Elytra and pronotum of equal colours; dorsal surface of elytra and pronotum blue, red or green. Hypomera with transverse carina finely marked and interrupted at mid-portion (e.g., Figs 1C View Fig , 7C View Fig ). Pygidium basal margin with strong carina. Paramere apical margin sub-straight (e.g., Figs 2A View Fig , 8A View Fig ). ...............................................................................................................................................................4

4. Dorsal surface with blue or green reflections, pronotum and elytra of same colour ( Fig. 1A View Fig ). Metafemur with basal portion punctures ( Fig. 1B View Fig ). Atlantic Forest in Brazil (from Pernambuco to Paraná), Paraguay and Argentina.............................. Canthon (Peltecanthon) staigi ( Pereira, 1953) View in CoL

– Dorsal surface with red or light green reflections, pronotum and elytra of same colour ( Fig. 7A View Fig ). Metafemur with basal portion smooth, lacking punctures ( Fig. 7A View Fig ). Northern Brazilian Atlantic Forest (Rio Grande do Norte, Paraíba, Pernambuco and Sergipe) ..................................................... ............................................................................................ Canthon (Peltecanthon) terciae View in CoL sp. nov.