Gaucha Mello-Leitao 1924
Authors/Creators
- 1. Centro de Estudos em Biologia Subterrânea, Setor de Zoologia Geral, Departamento de Biologia, Universidade Federal de Lavras, Lavras, MG. CEP 37200 - 000, Brazil & mvillelabio @ yahoo. com. br; https: // orcid. org / 0000 - 0001 - 8788 - 1370
- 2. Centro de Estudos em Biologia Subterrânea, Setor de Zoologia Geral, Departamento de Biologia, Universidade Federal de Lavras, Lavras, MG. CEP 37200 - 000, Brazil & drops @ ufla. br; https: // orcid. org / 0000 - 0003 - 3288 - 4405
- 3. Universidade Federal do Piauí, Campus Amílcar Ferreira Sobral, BR 343, KM 3.5, Bairro Meladão, s / no. CEP 64808 - 660, Floriano, PI, Brazil. carvalho @ ufpi. edu. br; https: // orcid. org / 0000 - 0003 - 4700 - 5610
Description
Genus Gaucha Mello-Leitão, 1924
Gaucha Mello-Leitão, 1924: 140–141 (as Gaùcha [sic]). Type species: Gaucha fasciata Mello-Leitão, 1924 (by original designation).
Gauchella Mello-Leitão, 1937: 84 (synonymized by Botero-Trujillo et al. 2017: 13). Type species: Gaucha stoeckeli Roewer, 1934 (by original designation).
Metacleobis Roewer, 1934: 589 (synonymized by Botero-Trujillo et al. 2017: 13). Type species: Metacleobis fulvipes Roewer, 1934 (by original designation).
Mummuciella Roewer, 1934: 583, 587 (synonymized by Mello-Leitão, 1937: 84). Type species: Mummuciella simoni Roewer, 1934 (by original designation).
Species composition. Thirteen South American species, namely: Gaucha avexada; Gaucha cabriola; Gaucha casuhati Botero-Trujillo, Ott & Carvalho, 2017; Gaucha curupi Botero-Trujillo, Ott & Carvalho, 2017; Gaucha eremolembra Botero-Trujillo, Ott & Carvalho, 2017; Gaucha fasciata Mello-Leitão, 1924; Gaucha fulvipes (Roewer, 1934); Gaucha ibirapemussu (Carvalho, Candiani, Bonaldo, Suesdek & Silva, 2010); Gaucha mauryi; Gaucha piranauru sp. nov.; Gaucha ramirezi; Gaucha santana Botero-Trujillo, Ott, Mattoni, Nime, Ojanguren-Affilastro, 2019; and Gaucha stoeckeli Roewer, 1934.
Distribution. Argentina (Buenos Aires, Córdoba and Santiago del Estero provinces), Bolivia (Cochabamba and La Paz departments), Brazil (States of Bahia, Distrito Federal, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Pernambuco, Piauí, Rio Grande do Sul, Tocantins), Uruguay (Lavalleja, Río Negro, Rivera).
Diagnosis. Based on Botero-Trujillo et al. (2017, 2019). Members of Gaucha are recognized by the following combination of characters: (i) Cheliceral movable finger MP tooth noticeably large, taller than MM tooth (mostly evident in males). (ii) Cheliceral movable finger mucron of males with gnathal edge carina prominent and convex on lateral aspect. (iii) Cheliceral fixed finger FSD tooth absent, otherwise present only in some specimens, often reduced to the size of a minute denticle in males. (iv) Cheliceral fixed finger of female curved on lateral aspect; angular dorsal crest absent, at most obsolete. (v) Males and females with ctenidia present: sparse on 1st and 2nd postgenital sternites (spiracular sternites I and II); more abundant on 3rd and 4th post-genital sternites (post-spiracular sternites I and II); and one or two ctenidia close to posterior margin of 5th post-genital sternite (post-spiracular sternite III). (vi) Ctenidia filiform, setiform and similar on the five sternites; distinguishable from integumental setae by being longer, single-tipped (non-bifid), and flexible. Additionally, most Gaucha species present sub-ventral whitish bands of the opisthosomal pleural membranes with scattered black marks surrounding the sockets of some setae, with the exception of G. ramirezi, that exhibits an inverse pattern (i.e., white marks on the blackish bands).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Mello-Leitao
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Order
- Solifugae
- Family
- Mummuciidae
- Genus
- Gaucha
- Taxon rank
- genus
- Taxonomic concept label
- Gaucha Mello-Leitao, 1924 sec. Souza, Ferreira & Carvalho, 2021
References
- Mello-Leitao, C. (1924) A new South-American solpugid. Revista Chilena de Historia Natural, 28, 140 - 143.
- Botero-Trujillo, R., Ott, R. & Carvalho, L. S. (2017) Systematic revision and phylogeny of the South American sun-spider genus Gaucha Mello-Leitao (Solifugae: Mummuciidae), with description of four new species and two new generic synonymies. Arthropod Systematics and Phylogeny, 75, 3 - 44.
- Roewer, C. F. (1934) Solifuga, Palpigrada. In: Bronn, H. G. (Ed.), Klassen und Ordnungen des Tierreichs. V Band: Arthropoda. IV Abteilung: Arachnoidea und kleinere ihnen nahegestellte gruppen. Akademische Verlagsgesellschaft mbh, Leipzig, pp. 481 - 723.
- Botero-Trujillo, R., Ott, R., Mattoni, C. I., Nime, M. F. & Ojanguren-Affilastro, A. (2019 b) Two new species of the sun-spider genus Gaucha from Argentina and Brazil (Solifugae, Mummuciidae). Zootaxa, 4551 (2), 180 - 194. https: // doi. org / 10.11646 / zootaxa. 4551.2.3