Hemipsilichthys gobio, (LUTKEN)

Reis, Roberto E., Pereira, Edson H. L. & Armbruster, Jonathan W., 2006, Delturinae, a new loricariid catfish subfamily (Teleostei, Siluriformes), with revisions of Delturus and Hemipsilichthys, Zoological Journal of the Linnean Society 147 (2), pp. 277-299 : 281-284

publication ID

https://doi.org/ 10.1111/j.1096-3642.2006.00229.x

DOI

https://doi.org/10.5281/zenodo.5744093

persistent identifier

https://treatment.plazi.org/id/03B47718-FFC8-FFFB-116A-44FDD013E121

treatment provided by

Carolina

scientific name

Hemipsilichthys gobio
status

 

HEMIPSILICHTHYS GOBIO (LÜTKEN) View in CoL ( FIG. 4 View Figure 4 )

Xenomystus gobio Lütken, 1874: 217 , pl. 4 (type locality: originally unknown. Restricted herein to the Rio Paraíba do Sul, south-eastern Brazil).

Upsilodus victori Miranda Ribeiro, 1924: 366 View in CoL [type locality: in Paquequer at Therezopolis, Rio de Janeiro ( Rio Paquequer , a tributary of the Rio Paraíba do Sul )].

Specimens examined: Brazil: Holotype of Xenomystus gobio: ZMUC 76 (121.2 mm SL), male, South America . Lectotype of Upsilodus victori: MNRJ 639 (101.4 mm SL), male, Rio Paquequer, Teresópolis , Rio de Janeiro . Paralectotype of Upsilodus victori: MNRJ 646 (108.3 mm SL) Rio Paquequer, Teresópolis , Rio de Janeiro . Other specimens: MNRJ 13654 View Materials (3 + 1 cleared and stained, 60.3–88.7 mm SL) Rio dos Frades, near mouth of Córrego da Chácara, Teresópolis, Rio de Janeiro (22°17′27′S 42°50′48′W), 27 July 1995. MCP 19780 (13, 36.7–123.9 mm SL) and MHNG 2587–31 (4, 45.0– 108.4 mm SL) Arroio Macaquinho, tributary of Rio Paraitinga c. 5 km of Bairro dos Macacos, Silveiras, São Paulo (22°50′47′S 44°50′30′W), 16 January 1997. UFJF 0362 View Materials (21, 104.8– 131.8 mm SL) Ribeirão Santana, tributary of Rio Preto, Rio Preto, Minas Gerais, 22 July 1997.

Diagnosis: Hemipsilichthys gobio can be distinguished from H. nimius and H. papillatus by its rectangular or oval-shaped dorsal-fin spinelet ( Fig. 3 View Figure 3 ) (vs. V-shaped in H. nimius and absent in H. papillatus ), and by the intermediate orbital diameter (12.0–14.7% HL vs. 8.6–11.8% in H. papillatus and 15.3–16.9% in H. nimius ).

Description: This species was recently described and illustrated by Pereira & Reis (2002) and the description will not be repeated here. Morphometric data, however, are presented in Table 1 View Table 1 for comparative purposes.

Distribution: Hemipsilichthys gobio is known from several localities in the Rio Paraíba do Sul basin, in the states of São Paulo, Rio de Janeiro, and Minas Gerais, Brazil ( Fig. 5 View Figure 5 ).

Ecology: Found in small rivers, with clear water, moderate to strong current, and a substrate of rocks, loose stones and gravel.

Remarks: The type locality of Xenomystus gobio was not cited in the original description. Eigenmann & Eigenmann (1889) described the genus Hemipsilichthys for Xenomystus gobio and included one specimen from the Rio Paraíba do Sul basin. All known specimens collected so far are also from that basin, and it is probable that the holotype is from the Rio Paraíba do Sul drainage. For this reason, we herein restrict its type locality to the Rio Paraíba do Sul.

MCP

Pontificia Universidade Catolica do Rio Grande do Sul

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Siluriformes

Family

Loricariidae

SubFamily

Delturinae

Genus

Hemipsilichthys

Loc

Hemipsilichthys gobio

Reis, Roberto E., Pereira, Edson H. L. & Armbruster, Jonathan W. 2006
2006
Loc

Upsilodus victori

Miranda Ribeiro 1924: 366
1924
Loc

Xenomystus gobio Lütken, 1874: 217

Lutken 1874: 217
1874
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