Oxysternon (Oxysternon) macleayi Nevinson, 1892

Hielkema, Auke J. & Hielkema, Meindert A., 2019, An annotated checklist of the Scarabaeoidea (Insecta: Coleoptera) of the Guianas, Insecta Mundi 732 (732), pp. 1-306 : 104

§ Oxysternon (Oxysternon) macleayi Nevinson, 1892

Oxysternon macleayi Nevinson 1892: 34 ( Brazil - LECTOTYPE)

= Oxysternon biimpressum Olsoufieff 1924: 115 ( Brazil)

Distribution. French Guiana: Olsoufieff 1924: 49, 115. Brazil: Nevinson 1892: 34; Gillet 1911b: 87; Olsoufieff 1924: 49, 115 (as O. biimpressum ; as O. macleayi ); Blackwelder 1944: 210 (as O. biimpressum ); Vaz-de-Mello 2000: 194 (as O. (Oxysternon) biimpressum ; as O. (Oxysternon) macleayi ); Arnaud 2002c: 70 (designation LECTOTYPE Oxysternon macleayi ); Edmonds and Zídek 2004: 15 (designation LECTOTYPE Oxysternon macleayi ). “Amazon Basin”: Olsoufieff 1924: 49, 115 (as O. macleayi ). Other: Blackwelder 1944: 210 ( Peru - as O. macleayi ).

Note 1. In 1983 Arnaud labeled a specimen of Oxysternon macleayi as lectotype, but he published this designation only in 2002 ( Arnaud 2002c). According to Edmonds and Zídek (2004: 17), this designation was invalid because it did not conform to Articles 74.7.2 and 74.7.3. Because of this, they designated another lectotype, which happened to be the same specimen. Contrary to Edmonds and Zídek (2004), we consider Arnaud’s lectotype designation fully in accordance with Article 74.7.3. However, we do acknowledge that there may be room for ambiguity regarding Article 74.7.2, as the lectotype label was written in 1983 but the designation was only published in 2002, without reference to this discrepancy in years. We therefore consider the lectotype of Edmonds and Zídek (2004) as the valid one.

Note 2. We are unaware of any recent records of Oxysternon macleayi from the Guianas, Brazil north of the Amazon or Venezuela. We consider it likely that the specimen from French Guiana mentioned in Olsoufieff (1924: 115) was mislabeled and regard this species as not occurring in the research area.