Systematics of Lamontichthys Miranda-Ribeiro (Siluriformes: Loricariidae), with the description of two new species
Author
Paixão, Andrea de Carvalho
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo. Caixa Postal 11461, 05422 - 970 São Paulo, SP, Brazil
andreapaixao@usp.br
Author
Toledo-Piza, Mônica
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo. Caixa Postal 11461, 05422 - 970 São Paulo, SP, Brazil
mtpiza@usp.br
text
Neotropical Ichthyology
2009
2009-12-18
7
4
519
568
https://doi.org/10.1590/s1679-62252009000400002
journal article
313264
10.1590/s1679-62252009000400002
9b33913b-ff1a-4027-a4c8-62c3b154a751
1982-0224
17751374
Table 3. Morphometric and meristic data for Lamontichthys parakana (n = 3) and L. stibaros. SD = standard deviation. Range of L. parakana includes holotype and paratypes.| Variable | L. parakana | L. stibaros |
|---|
| Holotype | Range Mean | SD | N | Range Mean | SD |
|---|
| Standard length (mm) | 112.7 | 72.2-119.0 | 101.3 | | 25 | 27.2-172.8 | 73.7 | |
|---|
| Percents of standard length |
|---|
| Head length | 20.6 | 20.6-22.4 | 21.3 | 1.0 | 25 | 18.4-28.5 | 22.5 | 2.2 |
|---|
| Predorsal length | 29.1 | 29.1-31.1 | 30.1 | 1.0 | 25 | 23.3-33.7 | 30.4 | 2.2 |
|---|
| Postanal length | 51.6 | 51.6-60.6 | 55.3 | 4.7 | 25 | 41.3-62.3 | 50.9 | 3.8 |
|---|
| Abdominal length | 16.8 | 15.9-17.1 | 16.6 | 0.6 | 25 | 4.9-17.0 | 15.0 | 2.2 |
|---|
| Thoracic length | 14.7 | 14.7-16.1 | 15.4 | 0.7 | 25 | 13.3-17.1 | 15.4 | 0.9 |
|---|
| Dorsal-fin length | 29.9 | 26.4-31.0 | 29.1 | 2.4 | 24 | 24.0-36.8 | 29.4 | 3.1 |
|---|
| Pectoral-fin length | 22.4 | 21.0-22.8 | 22.0 | 1.0 | 25 | 20.7-25.1 | 23.0 | 1.1 |
|---|
| Pelvic-fin length | 21.5 | 18.8-22.2 | 20.8 | 1.8 | 25 | 17.5-22.9 | 20.1 | 1.3 |
|---|
| Anal-fin length | 22.8 | 21.4-24.8 | 23.0 | 1.7 | 25 | 17.5-22.9 | 20.3 | 1.4 |
|---|
| Body depth at dorsal-fin origin | 11.6 | 10.8-12.7 | 11.7 | 0.9 | 25 | 1.8-12.1 | 10.2 | 2.0 |
|---|
| Caudal peduncle depth | 1.5 | 1.5-1.8 | 1.7 | 0.1 | 25 | 1.5-9.8 | 2.1 | 1.6 |
|---|
| Body width at dorsal-fin origin | 15.2 | 14.1-16.5 | 15.3 | 1.2 | 25 | 10.2-16.4 | 14.4 | 1.3 |
|---|
| Body width at anal-fin origin | 12.5 | 11.6-13.2 | 12.4 | 0.8 | 25 | 7.8-26.2 | 17.5 | 5.6 |
|---|
| Body width at caudal-fin origin | 2.6 | 2.6-3.1 | 2.8 | 0.3 | 25 | 2.3-3.1 | 2.7 | 0.2 |
|---|
| Percents of head length |
|---|
| Head width | 101.3 | 95.2-106.1 | 100.9 | 5.5 | 25 | 73.5-102.2 | 88.6 | 6.5 |
|---|
| Interorbital distance | 26.4 | 26.4-30.1 | 27.6 | 2.1 | 25 | 26.4-30.9 | 28.3 | 1.2 |
|---|
| Orbital diameter | 16.6 | 16.6-17.3 | 16.9 | 0.4 | 25 | 13.8-27.8 | 16.6 | 2.7 |
|---|
| Snout length | 61.6 | 59.3-62.5 | 61.1 | 1.6 | 25 | 52.8-65.8 | 59.4 | 2.8 |
|---|
| Dentary length | 21.7 | 20.1-22.6 | 21.5 | 1.2 | 25 | 14.7-24.3 | 19.9 | 2.3 |
|---|
| Lower lip width | 14.0 | 14.0-18.0 | 16.0 | 2.0 | 25 | 11.2-18.9 | 14.5 | 2.0 |
|---|
| Meristic data |
|---|
| Lateral plates of median series | 32 | 32-33 | 32.3 | 0.6 | 25 | 33-35 | 34.0 | 0.5 |
|---|
| Lateral plates of midventral series | 18 | 18 | 18 | 0.0 | 25 | 19-20 | 19.5 | 0.5 |
|---|
| Ventrolateral thoracic plates | 6-7 | 6-7 | 6.3 | 0.6 | 25 | 0-8 | 6.3 | 1.5 |
|---|
| Premaxillary teeth | 76-88 | 55-76 | 64.3 | 10.7 | 24 | 36-109 | 60.9 | 16.6 |
|---|
| Dentary teeth | 64-67 | 49-67 | 55.3 | 10.1 | 25 | 34-94 | 58.6 | 14.8 |
|---|
| Dorsal-fin rays | II,7 | II,7 | II,7 | 0.0 | 25 | II,7 | II,7 | 0.0 |
|---|
| Pectoral-fin rays | I,7 | I,7 | I,7 | 0.0 | 25 | I,7 | I,7 | 0.0 |
|---|
| Pelvic-fin rays | i,5 | i,5 | i,5 | 0.0 | 25 | i,5 | i,5 | 0.0 |
|---|
| Anal-fin rays | i,5 | i,5 | i,5 | 0.0 | 25 | i,5 | i,5 | 0.0 |
|---|
| Caudal-fin rays | i,12,i | i,12,i | i,12,i | 0.0 | 24 | i,12,i | i,12,i | 0.0 |
|---|