Ichthyofauna of the ribeirão Sucuri, a tributary of the rio Tietê, upper rio Paraná basin, southeastern Brazil
Reia, Lais
S. da Costa e Silva, Gabriel
Garcia-Ayala, James R.
P. F. Vicensotto, Ana Maria
Benine, Ricardo C.
Check List
2020
2020-06-16
16
3
711
728
73MYW
(Steindachner, 1907)
Steindachner
1907
Actinopterygii
Characidae
Moenkhausia
Animalia
Characiformes
7
718
Chordata
species
sanctaefilomenae
Figure 3D Original description. Tetragonopterussanctaefilome-nae Steindachner 1907: 82.
Material examined. BRAZIL• 1, 40.6 mmSL; São Paulo state, Pongaí, Córrego Água Grande; 21°41′31″S, 049° 20′31″W; 12 May 2018; leg. Silva G.S.C.and Reia L.(LBP 26510). Identification.Body deep; mouth terminal; premaxil- lary teeth in two rows, inner row with five pentacuspi- date teeth, outer row with three tricuspidate teeth; two tricuspidate teeth on maxilla; dentary with five anteri- ormost teeth larger, tri- to pentacuspidate. Lateral line complete with 25 perforated scales; four horizontal scale rows above lateral line; four horizontal scale rows be- low lateral line. Overall body coloration silver; dark chromatophores concentrated on distal margin of scales resulting in conspicuous reticulated pattern; conspicu- ous vertical dark humeral blotch; caudal peduncle with conspicuous dark spot extending to base of caudal-fin, preceded by a lighter area; dorsal portion of eyes red; yellowish fins.
Remarks.Specimens collected in the ribeirão Sucuri have a complete lateral line, as in M. australis Eigenmann, 1908, but they differ in the number of transver- sal scale rows above and below lateral line (4 vs 5). Reia et al. (2019)identified the specimens of the socalled Moenkhausia oligolepisgroup from the upper Paranábasin (except from Mato Grosso do Sul state) as Moenkhausiacf. sanctaefilomenaeby presenting a variable number of transversal scale series and an interrupted lateral line. This criterion is adopted herein. The M. oligolepsisgroup is being taxonomically revised by the first author.
LBP 26510
2018-05-12
Silva G. S. C. & Reia L.
Brazil
-21.691944
Corrego Agua Grande
21
-49.34194
Pongai
7
718
1
Sao Paulo