A new genus of armored catfish (Siluriformes: Loricariidae) from the Greater Amazon, with a review of the species and description of five new species
Author
Reis, Roberto E.
PontifÍcia Universidade Católica do Rio Grande do Sul. Av. Ipiranga, 6681, P. O. Box 1429, 90619 - 900 Porto Alegre, RS, Brazil.
reis@pucrs.br
Author
Lehmann A., Pablo
Laboratório de Ictiologia, Universidade do Vale do Rio dos Sinos. Av. Unisinos, 950, 93022 - 000 São Leopoldo, RS, Brazil.
pablole@unisinos.br.
text
Neotropical Ichthyology
2022
e 220002
2022-07-08
20
2
1
100
http://dx.doi.org/10.1590/1982-0224-2022-0002
journal article
304139
10.1590/1982-0224-2022-0002
1f6c7a0d-e5f8-479d-be08-03fd894b7cfe
1982-0224
13350428
0A755C8D-B807-41CF-825B-BD3209119D54
TABLE 7 | Descriptive morphometrics of Rhinotocinclus species. Values given as percent of standard length or head length. Range includes the holotype (Hol), SD = standard deviation. | R. bockmanni n = 8 | | R. dani n = 14 | | | R. hera n = 10 | |
|---|
| Character | | | | | | | | | | | | | | |
|---|
| Low | High | Mean | SD | Hol | Low | High | Mean | SD | Hol | Low | High | Mean | SD |
|---|
| Standard length (mm) | 18.3 | 23.0 | 19.8 | | 27.4 | 20.4 | 27.4 | 24.1 | | 25.2 | 19.4 | 26.1 | 22.6 | |
|---|
| Percent of SL |
|---|
| Body depth | 17.2 | 22.2 | 20.0 | 1.89 | 17.3 | 16.3 | 18.3 | 17.1 | 0.58 | 15.8 | 14.6 | 17.5 | 16.0 | 0.93 |
|---|
| Predosal distance | 47.5 | 51.2 | 49.3 | 1.21 | 48.6 | 47.5 | 49.8 | 48.4 | 0.77 | 49.0 | 47.2 | 50.5 | 48.6 | 0.92 |
|---|
| Prepelvic distance | 44.4 | 47.3 | 45.9 | 1.08 | 45.3 | 43.7 | 45.7 | 44.8 | 0.56 | 44.4 | 43.3 | 47.4 | 44.7 | 1.53 |
|---|
| Preanal distance | 64.7 | 67.6 | 66.0 | 0.92 | 65.1 | 63.8 | 66.1 | 65.1 | 0.69 | 64.8 | 63.4 | 67.0 | 64.4 | 1.13 |
|---|
| Preadipose distance | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|---|
| Dorsal-fin spine length | 24.2 | 28.3 | 26.1 | 1.56 | 24.0 | 24.0 | 27.0 | 25.3 | 0.90 | 25.1 | 21.5 | 25.1 | 23.7 | 1.13 |
|---|
| Anal-fin unbranched ray length | 18.2 | 21.3 | 19.0 | 1.09 | 15.5 | 15.5 | 19.3 | 16.6 | 1.07 | 18.3 | 14.4 | 18.3 | 16.7 | 1.30 |
|---|
| Adipose-fin spine length | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|---|
| Pectoral-fin spine length | 29.3 | 31.6 | 30.3 | 0.74 | 29.8 | 29.2 | 31.8 | 30.4 | 0.82 | 29.8 | 27.6 | 29.9 | 28.9 | 0.88 |
|---|
| Caudal peduncle depth | 10.6 | 11.6 | 11.1 | 0.37 | 8.8 | 8.8 | 9.9 | 9.3 | 0.28 | 8.3 | 7.8 | 9.3 | 8.6 | 0.50 |
|---|
| Dorsal-adipose fin distance | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
|---|
| Dorsal-fin base length | 11.8 | 14.3 | 13.1 | 0.75 | 11.3 | 9.8 | 12.7 | 11.5 | 0.87 | 9.3 | 9.3 | 12.3 | 10.3 | 1.08 |
|---|
| Lower caudal-fin principal ray | 28.4 | 34.1 | 31.0 | 1.96 | - | 24.3 | 27.9 | 26.4 | 1.12 | 25.3 | 24.3 | 29.7 | 26.7 | 1.93 |
|---|
| Cleithral width | 24.2 | 26.7 | 25.4 | 0.91 | 23.6 | 23.6 | 26.5 | 25.3 | 0.91 | 24.5 | 23.6 | 26.0 | 24.6 | 0.72 |
|---|
| Head length | 38.4 | 41.6 | 39.9 | 0.98 | 38.3 | 36.3 | 40.0 | 38.2 | 1.1 | 37.6 | 35.1 | 41.2 | 38.5 | 1.95 |
|---|
| Percent of HL |
|---|
| Head depth | 41.3 | 45.4 | 43.0 | 1.57 | 42.9 | 39.9 | 43.5 | 42.4 | 0.9 | 42.8 | 39.9 | 45.5 | 42.2 | 1.97 |
|---|
| Interorbital distance | 32.7 | 36.1 | 34.4 | 1.23 | 39.2 | 36.2 | 41.9 | 38.7 | 1.6 | 36.4 | 33.7 | 37.7 | 35.4 | 1.37 |
|---|
| Orbital horizontal diameter | 16.2 | 18.6 | 17.5 | 0.86 | 14.6 | 13.6 | 16.7 | 15.3 | 0.8 | 16.6 | 15.1 | 17.3 | 16.5 | 0.68 |
|---|
| Snout length | 49.0 | 52.2 | 50.3 | 1.07 | 53.1 | 50.8 | 55.6 | 52.7 | 1.2 | 52.8 | 51.9 | 55.6 | 53.5 | 1.40 |
|---|
| Internarial distance | 6.6 | 10.7 | 8.6 | 1.26 | 11.0 | 9.6 | 12.0 | 11.0 | 0.7 | 9.8 | 7.2 | 11.2 | 9.9 | 1.22 |
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| Tooth count |
|---|
| Premaxilla | 11 | 14 | 12.5 | 0.93 | 26 | 19 | 28 | 21.9 | 2.7 | 20 | 16 | 22 | 18.7 | 2.26 |
|---|
| Dentary | 9 | 12 | 11.0 | 1.07 | 22 | 16 | 22 | 19.4 | 1.7 | 21 | 15 | 21 | 17.4 | 2.01 |
|---|