Canthon cobosi

Canthon cobosi (Pereira & Martínez, 1960) revalidation and comb. nov.

Fig. 46A

Glaphyrocanthon (Glaphyrocanthon) cobosi Pereira & Martínez, 1960: 45–47

Glaphyrocanthon (Glaphyrocanthon) cobosi – Martínez et al. 1964: 5, 8, 11, 14. — Vulcano & Pereira 1964: 662; 1967: 561. — Halffter & Martínez 1977: 63 (as junior synonym of Sylvicanthon xanthopus).

The specific name refers to the Spanish entomologist Antonio Cobos Sánchez (1922–1998) (Pereira & Martínez 1960).

Holotype

BOLIVIA: ♀, Santa Cruz, Cordillera, Las Juntas, (“ BOLIVIA / Dº Sta. Cruz / Pcia. Cordillera / Las Juntas / Maldonado B:!! / Coll. Martínez / Oct. -948 ”, “ HOLOTYPUS ”, “ Glaphyrocanthon / (Glaph.) / cobosi sp.n. / ♀ / A. Martínez det. 19 56 ”, “ FICHADO ”, “MACN-En / 1009”) (MACN) (Fig. 45B).

Additional material (22 ♂♂, 26 ♀♀)

ARGENTINA: Jujuy: 1 ♀, Parque Nacional Calilegua, Águas Negras, 500 m, 18 Dec. 1987, S. and J. Peck leg. (CMNC); 3 ♂♂ (1 dissected), 5 ♀♀, Santa Barbara, Yuto, Feb. 1982 (CMNC).

BOLIVIA: Santa Cruz: 1 ♂, Cordillera, Parabanó (CEMT); 1 ♀, Cordillera, Río Seco, Feb. 1961 (CMNC); 1 ♂, 4 ♀♀, Cordillera, Río Seco, Feb. 1962 (CMNC); 1 ♂, Santa Cruz de la Sierra, Río Piraí, Sep. 1964 (?) (CMNC); 2 ♂♂, 2 ♀♀, Tentarembei, 18º28′ S, 62º05′ W, 318 m, 6 Feb. 2010, human faeces, Vidaurre et al. leg. (CEMT); 3 ♂♂, Sara, Santa Rosa del Sara, Nov. 1969 (CMNC); 1 ♀, Santa Rosa del Sara, Nov. 1972 (CMNC).

BRAZIL: Mato Grosso: 5 ♀♀, Barra do Bugres, Rio Currupiras, 15º10′08.2″ S, 56º50′22.7″ W, 296 m, 28 Feb. 2010, pitfall with human faeces, J.G. Mota-Souza leg. (CEMT). – Mato Grosso Do Sul: 2 ♀♀, Aquidauana, Piraputanga, 17 Jun. 2000, V. Lopes leg. (CEMT); 1 ♂, Bodoquena, Fazenda Califórnia, 20º41′05″ S, 56º51′33″ W, Mar. 2011, human faeces, L.O. Bavutti leg. (CEMT); 1 ♂, Bodoquena, Fazenda Califórnia, 20º41′08″ S, 56º51′31″ W, Mar. 2011, human faeces, L.O. Bavutti leg. (CEMT); 1 ♀, Bonito, Fazenda Palmeirinhas, 21º11.269′ S, 56º33.701′ W, Nov. 2009, banana, F.O. Roque leg. (CEMT); 1 ♂, 2 ♀♀, Bonito, [Hotel] Cabanas, 21º10′15″ S, 56º26′22″ W, Dec. 2010, human faeces, L.O. Bavutti leg. (CEMT); 1 ♀, Bonito, Hotel Cabanas, 21º10′17″ S, 56º26′26″ W, Dec. 2010, human faeces, L.O. Bavutti leg. (CEMT); 1 ♀, Bonito, Hotel Cabanas, 21º10′20″ S, 56º26′37″ W, Dec. 2010, human faeces, L.O. Bavutti leg. (CEMT); 1 ♀, Bonito, Hotel Cabanas, 21º10′21″ S, 56º26′34″ W, Dec. 2010, human faeces, L.O. Bavutti leg. (CEMT); 1 ♂, Corguinho, Quinta do Sol, 19º49′57″ S, 54º49′45″ W, Feb. 2011, human faeces, L.O. Bavutti leg. (CEMT); 1 ♂, Corumbá, Dec. 2007, C. Aoki leg. (AMBC); 1 ♂, same collecting data as for preceding (CEMT); 1 ♂, 1 ♀, Corumbá, Passo do Lontra, Dec. 2005, J.N.C. Louzada leg. (CEMT); 1 ♂, Ivinhema, 22º31′41″ S, 53º53′38″ W, Mar. 2011, human faeces, L.O. Bavutti leg. (CEMT); 1 ♂, 1 ♀, Jardim, Jun. 2000, V. Lopes leg. (CEMT); 1 ♀, Jardim, Rio da Prata, 21º25′40″ S, 56º27′00″ W, Mar. 2011, human faeces, L.O. Bavutti leg. (CEMT).

PARAGUAY: Cordillera: 1 ♀, 5 Jul. 2005, Naraujo leg. (CEMT); 2 ♂♂, Caacupé (“ Dº Capital / Caa Cupé ”), Oct. 1979 (CMNC).

BRAZIL. Mato Grosso: Barra do Bugres. Mato Grosso do Sul: Aquidauana (Piraputanga), Bodoquena, Bonito, Corguinho, Corumbá, Ivinhema, Jardim.

BOLIVIA. Santa Cruz: Cordillera (Las Juntas, Río Seco), Santa Cruz de la Sierra, Sara (Santa Rosa del Sara).

PARAGUAY. Cordillera: Caacupé.

ARGENTINA. Jujuy: Parque Nacional Calilegua, Santa Barbara.

From the only geographical record ever published for C. cobosi – the locality of Las Juntas, in the province of Cordillera, Santa Cruz, Bolivia –, the known distribution of this species is widened to encompass areas also in Brazil (Mato Grosso and Mato Grosso do Sul), Paraguay and northern Argentina. There is, however, a noteworthy geographical variation that, when studied in more detail, may reveal that what we are considering to be a single species represents, in fact, two: specimens from Brazil, in general, are darker, with few coppery reflections, while individuals from Bolivia, Argentina and Paraguay show a coppery colouration with greenish reflections (Fig. 46A). As no other morphological variations were found and as there is chromatic variation even among individuals from Brazil (being some of them more coppery than others), we do not consider we have at this moment enough evidence for the existence of more than a single species. Nonetheless, we recognize that more research is needed in order to have a deeper understanding of the inter- and intrapopulational variation of C. cobosi. For details on the revalidation of this species from its synonymy with C. xanthopus, see the discussion under this latter species, while for details on its transference to Canthon, see section ‘Species composition’ under Sylvicanthon above.