Two new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the rio Madeira basin, Brazil
Author
Tencatt, Luiz Fernando Caserta
Universidade Estadual de Maringá, Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Av. Colombo, 5790, 87020 - 900 Maringá, PR, Brazil
luiztencatt@hotmail.com
Author
Ohara, Willian Massaharu
Museu de Zoologia da Universidade de São Paulo, Caixa Postal 42494, 04299 - 970 São Paulo, SP, Brazil.
willianmohara@gmail.com
text
Neotropical Ichthyology
2016
Neotrop. Ichthyol.
2016-03-30
14
1
e 150063
1
16
http://dx.doi.org/10.1590/1982-0224-20150063
journal article
315090
10.1590/1982-0224-20150063
616194aa-c625-48eb-90b6-094da1b24242
1982-0224
4974566
Table 1. Morphometric data for Corydoras brittoi and Corydoras pavanelliae. N= number of measured specimens and SD = standard deviation. | Corydoras brittoi | Corydoras pavanelliae |
|---|
| N | Holotype | Low-High | Mean±SD | N | Holotype | Low-High | Mean±SD |
|---|
| Standard length (mm) | 20 | 38.1 | 31.4-39.0 | 36.1.5±1.8 | 20 | 45.1 | 23.3-45.1 | 26.6±4.8 |
|---|
| Percents of standard length |
|---|
| Depth of body | 20 | 38.6 | 34.7-40.5 | 38.7±1.2 | 20 | 43.2 | 35.8-43.2 | 38.7±1.6 |
|---|
| Predorsal distance | 20 | 51.2 | 49.5-53.3 | 51.1±0.8 | 20 | 54.5 | 48.6-54.5 | 52.2±1.6 |
|---|
| Prepelvic distance | 20 | 48.8 | 47.8-51.1 | 49.1±0.7 | 20 | 50.1 | 45.8-51.4 | 48.3±1.5 |
|---|
| Preanal distance | 20 | 83.2 | 80.3-85.1 | 82.1±1.2 | 20 | 85.8 | 78.1-85.8 | 81.3±1.8 |
|---|
| Preadipose distance | 20 | 84.3 | 83.8-86.5 | 84.8±0.9 | 20 | 88.2 | 83.5-88.7 | 85.6±1.5 |
|---|
| Length of dorsal spine | 19 | 23.6 | 23.6-27.2 | 25.3±1.2 | 19 | 30.8 | 26.7-32.4 | 30.3±1.4 |
|---|
| Length of pectoral spine | 20 | 24.9 | 24.2-27.2 | 25.9±0.9 | 20 | 31.7 | 28.7-33.8 | 31.1±1.3 |
|---|
| Length of adipose-fin spine | 19 | 8.4 | 8.0-10.2 | 9.0±0.6 | 20 | 8.6 | 7.6-9.8 | 8.7±0.7 |
|---|
| Depth of caudal peduncle | 20 | 14.7 | 13.7-15.7 | 14.9±0.5 | 20 | 15.7 | 15.0-16.9 | 15.8±0.6 |
|---|
| Length of dorsal-fin base | 20 | 19.4 | 18.6-21.6 | 20.2±0.8 | 20 | 19.3 | 16.7-19.5 | 18.1±0.8 |
|---|
| Dorsal to adipose distance | 20 | 16.8 | 14.9-19.1 | 16.7±1.3 | 20 | 18.2 | 18.0-20.5 | 19.3±0.8 |
|---|
| Maximum cleithral width | 20 | 23.1 | 22.9-25.2 | 24.0±0.6 | 20 | 29.3 | 26.5-29.3 | 27.7±0.8 |
|---|
| Head length | 20 | 44.4 | 42.6-49.0 | 45.0±1.4 | 20 | 47.7 | 44.2-48.6 | 46.6±1.3 |
|---|
| Length of maxillary barbel | 20 | 17.3 | 12.1-19.2 | 16.3±1.5 | 20 | 15.1 | 9.7-15.1 | 12.3±1.7 |
|---|
| Percents of head length |
|---|
| Head depth | 20 | 79.2 | 71.9-84.3 | 81.0±3.1 | 20 | 84.7 | 73.3-84.7 | 79.1±2.9 |
|---|
| Least interorbital distance | 20 | 29.2 | 28.1-32.3 | 31.0±1.2 | 20 | 33.5 | 29.3-34.0 | 31.4±1.3 |
|---|
| Horizontal orbit diameter | 20 | 22.8 | 20.9-24.3 | 22.8±0.8 | 20 | 21.4 | 21.4-27.4 | 24.9±1.3 |
|---|
| Snout length | 20 | 33.2 | 35.9-43.4 | 40.7±1.8 | 20 | 37.7 | 32.7-37.8 | 35.3±1.4 |
|---|
| Least internarial distance | 20 | 14.9 | 10.0-14.5 | 12.6±1.1 | 20 | 16.3 | 11.8-16.3 | 14.2±1.1 |
|---|