Australoheros mboapari, Santos De Lucena & Kullander & Norén & Calegari, 2023

Australoheros mboapari , new species

‘ Australoheros mboapari’ View in CoL , Lucena, Kullander, Norén & Calegari, 2022:97; also as mbapoari; name unavailable owing to Lucena et al. (2022) having not been registered in ZooBank.

Definition. Based on the morphology of adult specimens in the type series, including unique concealed or absent cheek squamation and the combination of character states in colouration, squamation, fin shape, and vertebrae count shared only with A. tembe View in CoL , A. forquilha View in CoL , and A. ricani , Australoheros mboapari is hypothesised to be a distinct evolutionary lineage.

Australoheros mboapari can be distinguished from all other species of Australoheros by absence of scales from all or lower half of cheek, or present deeply embedded (vs exposed in thin skin layer or with free margins and covering cheek). Australoheros mbapoari shares with A. forquilha , A. ricani , A. tembe , and A. ykeregua a row of minute scales along base of dorsal fin reaching anteriorly to or almost to anterior insertion of dorsal fin (vs scale layer ending at middle or more posterior position along dorsal-fin base); with A. ricani black soft dorsal fin in adult females (vs soft dorsal fin light). Australoheros mboapari differs from all other species of Australoheros except for A. forquilha , A. tembe , and A. ykeregua by absence of abbreviated dorsal portions of bars 5–6 anterodorsally on flank; prepelvic scales deeply embedded (vs with free margins); caudal fin subtruncate (vs rounded); broad pelvic-fin tip with first and second rays subequal in length (vs first ray longest) (first may be longer also in A. ykeregua ); from all except for A. forquilha , A. kaaygua , A. tembe , and A. ykeregua by deep lachrymal bone).

Holotype. MCP 49000 View Materials , adult male, 101.7 mm SL; Brazil: Rio Grande do Sul: Antônio Prado: Rio Taquarí drainage, Quaresma, close to the Rio das Antas , 28°52'46''S 51°19'12''W; J.D. Latini et al., Oct. 2003. GoogleMaps

Paratypes. All from Brazil, Rio Grande do Sul, Rio Taquari drainage: MCP 23044 View Materials ,47, 17.2–90.4 mm SL; Antônio Prado: Rio Toro, on the road from Vila Flores to Antônio Prado , 28°52'19''S 51°26'57''W; R.E. Reis, J.F. Pezzi and E.H.L. Pereira, 21 Jan. 1999. GoogleMaps — MCP 33554 View Materials , 4, 81.1–95.6 mm SL; Nova Roma do Sul: Arroio do Carma, near mouth in Rio das Antas , 28°58'93''S 51°23'12''W; J.D. Latini et al., 2003. — MCP 33639 View Materials , 1, 97.3 mm SL; Santa Bárbara: Rio das Antas close to mouth of Rio Carreiro , 29°5'29''S. 51°42'42''W; J.D. Latini et al., 28 Sept. 2002. GoogleMaps – MCP 33659 View Materials , 7, 65.7–84.8 mm SL; Same data as holotype. GoogleMaps — MCP 34988 View Materials , 4, 62.1–77.5 mm SL; Brazil: Antônio Prado: Rio Ituím at Cachoeira do Saltinho, tributary of the Rio Turvo , 28°37'S 51°23''W; A.R. Cardoso and V.A. Bertaco, 6 Mar. 2004. — MCP 40953 View Materials , 3, 56.0– 97.3 mm SL; Veranópolis: Rio da Prata, tributary of the Rio das Antas , 28°58'16"S 51°27'20"W; J.D. Latini, V.A. Capatti, and S. Rodrigues, Nov 2005. GoogleMaps — MCP 44382 View Materials . 2, 78.5–87.2 mm SL. Veranópolis: mouth of the Rio Pratinha , 28°56'00"S 51°27'59''W; J.F. Pezzi, 14 Jan. 2007. GoogleMaps — MCP 47552 View Materials , 1, 106.2 mm SL; Nova Roma do Sul: Rio da Prata, tributary of the Rio das Antas , 28°58'15''S 51°27'20''W; J. D. Latini et al., Oct 2011. GoogleMaps – UFRGS 9688 View Materials , 23 (3, 92.5–107.9 mm SL; 20, 21.3– 36.1 mm SL); Dois Lajeados: Rio Carreiro above PCH Linha Emília , 28°56'24”S 51°46'47"W; J. Ferrer and G. Frainer, 17 Jan 2008. GoogleMaps — UFRGS 13184 View Materials . 2, 46.5–48.1 mm SL; Muitos Capões: Rio Taquari drainage: Rio Ituím at PCH Saltinho , 28°37'09"S 51°21'14"W; J. Anza and G. Frainer, 22 Mar. 2010. GoogleMaps

Explanation of name. The specific name is a noun in apposition, referring to the geographical distribution of the species, the Rio das Antas, which was previously known as Mboapari.