Gymnotus carapo subsp. caatingaensis Albert 2017, New Subspecies

Gymnotus carapo caatingaensis New Subspecies Figure 3 B, Tables 3 and 4 Holotype: AUM 20624, 225 mm. Brazil, Piauí, Río Gurgueia aff. Río Parnaíba (08°32’24”S, 044°25’48”W). Paratype: AUM 20624, 210 mm. Brazil, Piauí, Río Gurgueia aff. Río Parnaíba (08°32’24”S, 044°25’48”W). Non-Types: AUM 20689 (2), 95–138 mm, Brazil, Piauí, Río Gurgueia, 25 km SW Urucui. AUM 2079 (4), 156–192 mm, Piauí, Parnaíba, between Santa Filomena and Jurumenha. AUM 20793 (4), 111–195 mm, Brazil, Piauí, Parnaíba, between Santa Filomenha and Jurumenha. Description: Specimens of G. carapo from the Caatinga ecoregion in the Brazilian state of Piauí overlap substantially in morphometric and meristic PC-space with specimens from other localities (Figures 4, 5, and 12). Gymnotus carapo caatingaensis is characterized by the following combination of statistically significant (p