Laemolyta taeniata ( Kner, 1859 )

Mautari, Kelly Cristina & Menezes, Naércio Aquino, 2006, Revision of the South American freshwater fish genus Laemolyta Cope, 1872 (Ostariophysi: Characiformes: Anostomidae), Neotropical Ichthyology 4 (1), pp. 27-44: 41-43

publication ID

http://doi.org/ 10.1590/S1679-62252006000100002

publication LSID

lsid:zoobank.org:pub:22071950-40B5-4151-AB3C-D6AE6A2607E9

persistent identifier

http://treatment.plazi.org/id/038187AC-996F-FC57-FC3B-FF7FFD7686DA

treatment provided by

Carolina

scientific name

Laemolyta taeniata ( Kner, 1859 )
status

 

Laemolyta taeniata ( Kner, 1859)  

( Fig. 23 View Fig )

Schizodon taeniatus Kner, 1859: 159   [original description, type-locality: Brazil, rio Guaporé, Mato Grosso]; Fowler, 1942:214 [listed]; Eschmeyer, 1998: 1643 [catalog].

Anostomus taeniatus: Günther, 1864: 304   [brief description, rio Capim]; Garman, 1890: 18 [identification key, description, distribution]; Regan, 1905: 189 [listed].

Laemolyta taeniata Cope, 1872: 259   [designation of type species]; Eigenmann & Eigenmann, 1891: 50 [listed]; Fowler, 1906: 322 [brief description, based on Cope’s material]; Eigenmann, 1910: 425 [listed]; Fowler, 1942: 214, fig. 40 p. 213 [catalog, Peru]; Myers, 1950: 197 [diagnosis, type-locality]; Fowler, 1950: 209 [synonymy, distribution]; Knöppel, 1972: 234 [stomach contents]; Géry, 1974: 150 [supplementary description, identification key]; Ortega & Vari, 1986: 12 [catalog]; Santos & Jégu, 1989: 167, fig. p.196 [redescription], 1996: 161, fig. 10, p.178 [rio Uatumã (Amazon Basin), INPA’s material listed]; Garavello & Britski, 2003: 73 [catalog]; Lasso et al., 2004:105–195 [list of species and distribution].

Anostomus (Schizodontopsis) taeniatus: Borodin, 1931: 45– 46   [synonymy, diagnosis, comparative analysis of characters].

Anastomus   [error] taeniatus: Fowler, 1942: 214   [listed].

Laemolyta taeniata taeniata: Géry, 1964: 466   [identification key].

Anostomus (Laemolyta) taeniatus: Géry, 1977: 179   [identification key, distribution].

Laemolyta proximus: Lasso, 1992: 15   , fig. 4 p. 22 [in part, only specimen 143.9 mm SL in MHNLS 5512 View Materials ].

Laemolyta taeniatus: (Kner, 1854)   : Taphorn et al., 1997:55– 100 [catalog].

Material examined. 213 specimens (54.9–288.8 mm SL). Brazil. Mato Grosso: rio Guaporé , Natterer, NMW 81379 View Materials   : 2, 1 lectotype (by present designation), 159.4 mm SL. Rio Guaporé , Natterer, NMW 62875 View Materials   , 1 paralectotype, 177.3 mm SL. Bolivia. Beni: backwater slough of río Itenez , 10 km SE of Costa Marques, Mamoré- Madeira Amazon drainage, UMMZ 205215 View Materials , 6 View Materials   of 15, 43.2–69.5 mm SL. Brazil. Amazonas: rio Negro , Camanaos Rapids, below São Gabriel, CAS 116291 View Materials   , 1, 188.3 mm SL. Rio Negro , CAS 116289 View Materials , 1 View Materials   , 99 mm SL. Rio Uatumã, Presidente Figueiredo, igarapé Arraia , Balbina Dam, INPA 10015 View Materials   , 1, 172.9 mm SL. Presidente Figueiredo, rio Uatumã, igarapé Arraia , Balbina Dam, INPA 10016 View Materials , 2 View Materials   , 212– 214 mm SL. Rio Amazonas, ilha do Careiro , igarapé da Terra Nova, INPA 10812 View Materials   , 1, 166.3 mm SL. Mouth of Paraná Urucará, MZUSP 5764 View Materials   , 1, 249.6 mm SL. Lago Manacapuru , MZUSP 5885 View Materials   1 of 2, 163 mm SL. Igarapé Jaraqui, left bank of rio Negro , MZUSP 6189 View Materials , 8 View Materials   of 10, 198.7– 235.9 mm SL. Rio Canumá , MZUSP 7057 View Materials , 4 View Materials   of 5, 110.3– 181.3 mm SL. Rio Negro , Tapera, MZUSP 43363 View Materials   , 1, 207.2 mm SL. Rio Negro, Tapera , MZUSP 59056 View Materials , 9 View Materials , 166.4 View Materials   221.2 mm SL. Rio Negro, Paricatuba , MZUSP 45559 View Materials   , 1, 197.3 mm SL. Pond on island in rio Negro , Paricatuba, MZUSP 62116 View Materials , 1 View Materials   , 63.8 mm SL. Rio Negro, below rio Daraá , MZUSP 29158 View Materials   1, 66.3 mm SL and MZUSP 31266 View Materials , 1 View Materials   , 79.4 mm SL. Rio Negro, Barcelos , MZUSP 29189 View Materials , 10 View Materials   , 74–92.3 mm SL and MZUSP 29192 View Materials   , 1, 111.5 mm SL. Rio Negro, above rio Urubaxi, central lake in ilha Buiu-Açu , MZUSP 29190 View Materials , 14 View Materials   of 19, 73.5–116.7 mm SL. Rio Negro , below Daraá, MZUSP 32417 View Materials , 2 View Materials   of 3, 122.6– 177.7 mm SL. Rio Negro, lake in ilha de Tamaquari , MZUSP 32417 View Materials , 2 View Materials   of 3, 198.3– 241.7 mm SL. Junction between rio Negro and Arirará, MZUSP 32418 View Materials   , 1, 205.6 mm SL. Rio Negro above Barcelos , MZUSP 32419 View Materials , 4 View Materials , 148.7 View Materials   214.4 mm SL. Rio Negro, Marauiá, Cachoeira Bicho-Açu , MZUSP 32420 View Materials , 3 View Materials   of 5, 177.9– 188.7 mm SL. Rio Negro, igapó in Anavilhanas , MZUSP 60184 View Materials , 2 View Materials , 200.4 View Materials   201.9 mm SL. Rio Negro, lago do Prato , Anavilhanas, MZUSP 60186 View Materials   , 1, 231.8 mm SL. Rio Marauiá , lake on edge of river, MZUSP 60187 View Materials , 10 View Materials   of 11, 130.7– 227.6 mm SL. Rio Negro , igapó in Anavilhanas, MZUSP 61641 View Materials   , 1, 145.8 mm SL. Rio Negro , Anavilhanas, MZUSP 63611 View Materials   1, 212.1 mm SL. Rio Amazonas , lago Puraquequara MZUSP 63612 View Materials , 1 View Materials   , 75.9 mm SL. Goiás: São Domingos MZUSP 3850 View Materials   , specimen damaged (not included in analysis). Rio Tocantins, below the dam of Serra da Mesa , SM   19– 221 specimen examined (not included in analysis). Mato Grosso: rio Guaporé , 5 km above Costa Marques, INPA 11187 View Materials , 5 View Materials   , 70.3–73.4 mm SL. Rio Aripuanã, ilha do Castanhal , INPA 14275 View Materials   , 1, 220.5 mm SL. Rio Alegre tributary of rio Guaporé about 30 km above Vila Bela da Santíssima Trindade, MZUSP 36928 View Materials , 5 View Materials , 113.6 View Materials   214.8 mm SL, MZUSP 37468 View Materials , 4 View Materials , 175.1 View Materials   209 mm SL. Rio Guaporé, nearby Vila Bela da Santíssima Trindade , MZUSP 37438 View Materials , 10 View Materials   of 15, 144.2– 249.6 mm SL. Pará: Curuá-Una (km 80), INPA 772 View Materials , 3 View Materials , 168.8 View Materials   288.8 mm SL. Rio Tocantins, igarapé Canoal , above Tucuruí waterfall, INPA 1598 View Materials   , 1, 142 mm SL. Lago Morateiro, Itupiranga (Tocantins), INPA 1600 View Materials , 3 View Materials   , 88.5–93.4 mm SL. Rondônia: rio Jaci-Paraná, about 40 km above town of Jaci-Paraná (near Três Marias), INPA 10603 View Materials   , 1, 194.7 mm SL. Rio Pacaás Novos, tributary of rio Mamoré , about 15 km above Guajará-Mirim, INPA 12223 View Materials , 1 View Materials   , 99.6 mm SL. Rio Jamari , INPA 12230 View Materials , 1 View Materials   , 72.4 mm SL. Rio Jamari , lago da Espanha, about 15 km below Samuel Dam, INPA 15206 View Materials   , 1, 179 mm SL. Rio Jamari, lago da Espanha, about 15 km below Samuel Dam, Candeias do Sul , INPA 15207 View Materials   , 1, 126.2 mm SL. Rio Guaporé, mouth of rio São Domingos, igapó, Costa Marques , INPA 15208 View Materials   , 1, 175.9 mm SL. Rio Canaã, about 10 km above Ariquemes, lago Fortaleza, Ariquemes , INPA 15209 View Materials , 5 View Materials , 161.2 View Materials   204 mm SL. Rio Pacaás Novos, Guajará-Mirim , INPA 15213 View Materials , 5 View Materials , 109.9 View Materials   217.5 mm SL. Rio Trombetas, Oriximiná , MZUSP 5423 View Materials , 12 View Materials   of 15, 190.4– 226.2 mm SL. Oriximiná , MZUSP 21191 View Materials , 1 View Materials   , 73.6 mm SL. Rio Capim near Ananindeua , MZUSP 21202 View Materials   , 1, 190 mm SL. Lago Maria Preta, rio Capim , MZUSP 21213 View Materials , 1 View Materials   , 58.3 mm SL. Lago Jurunundeua, rio Capim , MZUSP 21218 View Materials , 4 View Materials   , 86.8–92.9 mm SL. Ilha da Barreirinha, rio Tapajós , São Luís, MZUSP 21226 View Materials , 10 View Materials   , 84.4–94.4 mm SL and MZUSP 22106 View Materials , 3 View Materials , 105.5 View Materials   124.7 mm SL. Igarapé Açu, Aveiro , MZUSP 21361 View Materials , 8 View Materials , 104.2 View Materials   133.5 mm SL. Lago Bernardino, near Vila Badajós, rio Capim , MZUSP 63613 View Materials , 1 View Materials   , 96.7 mm SL. Lago Jacaré, rio Trombetas , MZUSP 49320 View Materials , 3 View Materials , 162.9 View Materials   203.8 mm SL. Rio Trombetas, island in mouth of lago Erepecu, Trombetas Biological Reserve , MZUSP 62412 View Materials   , 1, 145.7 mm SL. Rondônia: rio Machado, Santo Antônio , lago do Mucuim, MZUSP 61977 View Materials , 1 View Materials   , 68.6 mm SL. Colômbia. Guainía: río Inírida drainage: Morizal Garza, ca 10 km NE from mouth of río Papunava , río Orinoco basin, NRM 27510 View Materials , 1 View Materials   of 2, 60.5 mm SL. Venezuela. Laja Vendita: río Casiquiare , Amazonas, CAS 20173 View Materials , 1 View Materials   , 87.8 mm SL, CAS 116288 View Materials , 1 View Materials   , 84.1 mm SL. Laguna , 2 km SE of Caño la Pica, Apure, MHNLS 4231 View Materials , 2 View Materials   of 7, 69.3 mm SL. Laguna, 2 km SW of Caño La Pica (Paso Grande), D. Medina, MHNLS   5163, 1, 81.7 mm SL. Río Suapure , Rabo de Cochino , Pijiguaos, Bolívar, MHNLS 5512 View Materials , 1 View Materials   of 3, 143 mm SL. Laguna Cejal, floodplain, caño Mato, tributary of río Caura , Bolívar, MHNLS 12831 View Materials , 2 View Materials   , 99.9–102.5 mm SL. Laguna los Garzones, floodplain, caño Mato , tributary of río Caura , MHNLS 13059 View Materials , 1 View Materials   , 92.1 mm SL.

Diagnosis. Laemolyta taeniata   is the only species in the genus having 5 longitudinal scale rows from the lateral line to the origin of the dorsal fin (vs. 4 and 6–8 in the remaining species). Its color pattern is similar to that of L. garmani   and L. orinocensis   , but it can be distinguished from L. garmani   by the presence of a dark, midlateral longitudinal stripe and the more conspicuous, narrow light stripes above the lateral line and from L. orinocensis   in having fewer scales along the lateral line (42–46 vs. 47–52).

Description. Meristic and morphometric data presented in Table 6. Body moderately large (SL = 54.9–288.8 mm). Dorsal profile of body almost straight and posterodorsally inclined from anterior tip of snout to end of occipital spine, slightly convex from that point to origin of dorsal fin, straight and posteroventrally inclined along dorsal-fin base and straight or slightly convex from base of posterior-most end of dorsalfin ray to origin of adipose fin.

Gill rakers on dorsal limb of first gill arch 9–12 and 11–15 on ventral limb.

Perforated scales on lateral line 42–46 (44*, usually 44, Table 2). Longitudinal scale rows from lateral line to dorsalfin origin 5; scales rows from lateral line to anal-fin origin 4–5 (4*, usually 4). Predorsal scales 11–13 (12*, usually 12) and usually regularly arranged. Scales rows around caudal peduncle 15–17 (16*, usually 16).

Dorsal fin rays ii,9–12 (11*, usually 12); distal margin of fin slightly rounded. Anal fin short, slightly falcate, with ii,7– 9 (8*, usually 8) rays. Pectoral fin rays i,10–16 (12, usually 13). Pelvic fin rays i,8–9 (8*, usually 8); distal margin of fin truncate. Vertebrae 40–41 (41*, usually 41 N=5).

Color in alcohol. Dorsal region of body generally dark, dark coloration extending ventrally to 1 longitudinal scale row above lateral line. Conspicuous, dark, longitudinal stripe extending from tip of snout to caudal peduncle. Stripe narrower on snout and caudal peduncle. Scales above lateral line with central posterior areas whitish and forming narrow light stripes or linear light dots.

Distribution. Amazon and Orinoco basins ( Fig. 10 View Fig ).

Remarks. In the original description three specimens were designated syntypes of Schizodon taeniatus   . Specimen NMW 81379 View Materials :2 is herein designated the lectotype.

Laemolyta taeniata   reaches the largest size among its congeners and it is the second most widely distributed member of the genus in the Amazon basin, being particularly common in the central Amazon and upper rio Madeira basin. It has also been recorded in the río Orinoco basin where it has been confused with L. orinocensis   .

Data from Santos & Jégu (1996) indicate that L. taeniata   is usually found in lakes and main river channels where it forms large migratory shoals in company of species of other genera such as Leporinus fasciatus   and L. agassizi   .

Although not included in the list of examined material, specimens from São Domingos, ( MZUSP 3850 View Materials , specimen damaged) and rio Tocantins, below the dam of Serra da Mesa , Goiás ( SM 19–221 da Universidade Federal do Rio de Janeiro, specimen examined, but not included in analysis) were examined   .

NMW

Naturhistorisches Museum, Wien

SM

Sarawak Museum

NRM

Swedish Museum of Natural History - Zoological Collections

CAS

California Academy of Sciences

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Characiformes

Family

Anostomidae

Genus

Laemolyta

Loc

Laemolyta taeniata ( Kner, 1859 )

Mautari, Kelly Cristina & Menezes, Naércio Aquino 2006
2006
Loc

Laemolyta taeniatus

Taphorn, D & Royero, A 1997: 55
1997
Loc

Laemolyta proximus:

Lasso, C 1992: 15
1992
Loc

Anostomus (Laemolyta) taeniatus: Géry, 1977: 179

Gery, J 1977: 179
1977
Loc

Laemolyta taeniata taeniata: Géry, 1964: 466

Gery, J 1964: 466
1964
Loc

Anastomus

Fowler, H 1942: 214
1942
Loc

Anostomus (Schizodontopsis) taeniatus:

Borodin, N 1931: 46
1931
Loc

Laemolyta taeniata

Lasso, C & Lew, D & Taphorn, C & do Nascimiento, O & Alcala, F 2004: 105
Gery, J 1974: 150
Myers, G 1950: 197
Fowler, H 1950: 209
Fowler, H 1942: 214
Eigenmann, C 1910: 425
Fowler, H 1906: 322
Eigenmann, C 1891: 50
Cope, E 1872: 259
1872
Loc

Anostomus taeniatus: Günther, 1864: 304

Regan, C 1905: 189
Garman, S 1890: 18
Gunther, A 1864: 304
1864
Loc

Schizodon taeniatus

Eschmeyer, W 1998: 1643
Fowler, H 1942: 214
Kner, R 1859: 159
1859