Leptolebias opalescens, (MYERS, 1942)

Costa, Wilson J. E. M., 2008, Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus, Zoological Journal of the Linnean Society 153 (1), pp. 147-160 : 154-155

publication ID

https://doi.org/ 10.1111/j.1096-3642.2008.00380.x

DOI

https://doi.org/10.5281/zenodo.5492638

persistent identifier

https://treatment.plazi.org/id/2A528795-FFB3-411F-FCF4-A960E1EBFADB

treatment provided by

Felipe

scientific name

Leptolebias opalescens
status

 

LEPTOLEBIAS OPALESCENS ( MYERS, 1942) View in CoL

Cynopoecilus fluminensis Faria & Muller, 1937: 99 View in CoL [name suppressed for purposes of priority, and placed on Official Index & Opinion 1762; type locality: Estado do Rio de Janeiro, in small ponds in shady places near streams, containing abundant water during the winter, but drying out completely in the dry season (temporary pools close to the old road Rio-Petrópolis, near Imbariê, Município de Duque de Caxias, Estrela river drainage, Guanabara bay   GoogleMaps basin, Estado do Rio de Janeiro, about 22°37′S, 43°12′W); syntypes lost).

Cynolebias opalescens Myers, 1942: 107 View in CoL [type locality: water holes or ponds along base of the Serra do Petropolis   GoogleMaps (serra de Petrópolis) (temporary pools close to the old road Rio-Petrópolis, near Imbariê, Município de Duque de Caxias   GoogleMaps , Estrela river   GoogleMaps drainage, Guanabara bay basin, about 22°37′S, 43°12′W), State of Rio de Janeiro, Brazil; holotype, CAS (SU) 36521].

Cynolebias nanus Cruz & Peixoto, 1983: 90 View in CoL [type locality: right side of the road between the villages of Cava   GoogleMaps and Tinguá   GoogleMaps , 22°38′S, 43°25′W, approximately 8 km from the first village ( Iguaçú river   GoogleMaps drainage, Guanabara bay   GoogleMaps basin), Município de Nova Iguaçu, Estado do Rio de Janeiro ( Brazil); holotype, MNRJ 10621 View Materials ).

Material examined: Brazil, Rio de Janeiro: CAS ( SU) 36522, six paratypes ; MNRJ 11301 View Materials , 3 View Materials ; base of serra de Petrópolis ; MNRJ 10621 View Materials , holotype of C. nanus , 20.3-mm SL , MNRJ 10622 View Materials , 1 View Materials , MZUSP 25229 View Materials /30, two paratypes of C. nanus ; road between Cava and Tinguá, about 8 km from Cava, Nova Iguaçu .

Diagnosis: Distinguished from all congeners, except L. citrinipinnis , in having dorsal-fin origin in vertical between base of seventh and ninth anal-fin rays (vs. between base of second and sixth anal-fin rays). It differs from L. citrinipinnis by having caudal fin lanceolate (vs. elliptical), dark-red stripe on distal margin of dorsal and anal fins, and dorsal and ventral margin of caudal fin in males (vs. reddish brown pigmentation diffuse).

Remarks: Redescribed by Costa & Lacerda (1988).

Distribution: Estrela and Iguaçu river basins, both draining into Guanabara bay, Rio de Janeiro state, south-eastern Brazil ( Fig. 5 View Figure 5 ).

Habitat and conservation: Not collected since 1981, so possibly extinct. Its area of occurrence was formerly occupied by dense rainforest, but is now highly urbanized. Leptolebias opalescens was collected both in open vegetation and in forest borders, sometimes sympatric to L. splendens and L. marmoratus .

CAS

California Academy of Sciences

SU

Stanford University

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Cyprinodontiformes

Family

Rivulidae

Genus

Leptolebias

Loc

Leptolebias opalescens

Costa, Wilson J. E. M. 2008
2008
Loc

Cynolebias nanus

Cruz CAG & Peixoto OL 1983: 90
1983
Loc

Cynolebias opalescens

Myers GS 1942: 107
1942
Loc

Cynopoecilus fluminensis

Faria A & Muller H 1937: 99
1937
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