Trichomycteridae, Bleeker, 1858

Mojica, José Ivan & Agudelo-Zamora, Henry D., 2018, Historical review, catalog of type specimens and online database of the ichthyology collection of the Instituto de Ciencias Naturales of the Universidad Nacional de Colombia (ICN-MHN), Zootaxa 4478 (1), pp. 1-79 : 35-39

Trichomycteridae

Pygidium metae guayaberensis Dahl, 1960a: 307 , fig. 2. Holotype ( Fig. 47 ): ICN-MHN 435 (57.0 mm SL), Colombia, Meta, in a small pond in a brook tributary to the Guayabero River ca. 1 km from the mouth of the brook and 1500 m from the expedition camp No. 1, situated on the left bank of the Guayabero, ca. 4 km above Camp Thompson; G. Dahl, 23 Jan 1959.

Remarks: Cala (1981) and Mojica & Castellanos (2007, 2009) did not listed the holotype of Pygidium metae guayaberensis . The holotype was found in the general collection under a different taxonomic identification, but with the old label intact. Currently as Ituglanis guayaberensis .

Pygidium migrans Dahl, 1960b: 309 , fig. 3. Holotype ( Fig. 48 ): ICN-MHN 399 (41.5 mm SL), Colombia, Meta, Guayabero River, tributary of Meta River; G. Dahl, 14 Mar 1959. Paratypes ICN-MHN 400 (691, 26.3–35.5 mm SL), ICN-MHN 396 (1030, 25.8–36.0 mm SL), collected with the holotype.

Remarks: Cala (1981) indicated that ICN-MHN 400 had 1384 specimens and Mojica & Castellanos (2009) assigned 683 specimens to the same lot. Currently as Trichomycterus migrans .

Pygidium totae Miles, 1942c: 55 , unnumbered figure. Holotype ( Fig. 49 ): ICN-MHN 353 (145.0 mm SL), Colombia, Boyacá, Sogamoso, Lago de Tota, eastern versant, Cordillera Oriental , 3060 m asl.; C. Miles & C. L. Winz, Feb 1942. Paratype: ICN-MHN 20a (one head), collected with the holotype .

Remarks: Cala (pers. comm.) recatalogued ICN-MHN 20 as ICN-MHN 353. The lot SU 37074 corresponds to the posterior half of ICN-MHN 20a ( Schaefer & Fernández, 2009). Miles (1942c) wrongly indicated that the holotype measured 130 mm SL, while Mojica & Castellanos (2007) gave a standard length of 353 mm SL, being clearly a mistake with the catalog number of the holotype. We verified the standard length of the specimen using ImageJ ( Rasband, 2016). Currently as Rhizosomichthys totae .

Trichomycterus gorgona Fernández & Schaefer, 2005: 69 , fig. 1. Paratype ( Fig. 50 ): ICN-MHN 10019 (58.7 mm SL), Colombia, Cauca, Pacífic Sea, Isla Gorgona, freshwater stream near NE end of island, Argosy Ecuador Expedition station 29, 02°59’N 78°11’30”W; Argosy Ecuador Expedition, 21 Sep 1961 .

Remarks: the paratype was donated from ANSP (Arrindell Radford pers. comm.).

Trichomycterus ocanaensis Ardila-Rodríguez, 2011 , unnumbered pages, 1 unnumbered figure on cover. Paratypes ( Fig. 51 ): ICN-MHN 16919 (7, 42.8–69.0 mm SL), Colombia, Norte de Santander, Ocaña Teja River, tributary of Algodonal River, upper Catatumbo River , 08° 14’15”N 73°02’26”W, 1202 m asl.; C. Ardila-Rodríguez, 19 Mar 2008.

Trichomycterus ruitoquensis Ardila-Rodríguez, 2007: 3 , 1 unnumbered figure on cover. Paratypes ( Fig. 52 ): ICN- MHN 16920 [ex CAR 37 ] (7, 9.4–52.3 mm SL), Colombia, Santander, Floridablanca, Riofrío River, sector " La Clausen ", tributary of Río de Oro , upper drainage of Lebrija River , Magdalena River Basin , 1000 m asl.; C. Ardila- Rodríguez, J. Sandoval T. & R. Ardila R., 16 Dec 2000 .

Trichomycterus torcoromaensis Ardila-Rodríguez, 2016: 4 , 1 unnumbered figure on cover. Paratypes ( Fig. 53 ): ICN-MHN 19539 (3, 48.1–61.6 mm SL), Colombia, Norte de Santander, Ocaña, Quebrada Torcoroma, upper section, Magdalena River Basin; C. Ardila-Rodríguez, 18 Aug 2015 .

Figures

FIGURE 47. Holotype of Pygidium metae guayaberensis ICN-MHN 435 (scale bar = 1 cm). Photo by Henry Agudelo.

FIGURE 48. Holotype of Pygidium migrans ICN-MHN 399 (scale bar = 1 cm). Photo by Jorge García Melo.

FIGURE 49. Holotype of Pygidium totae ICN-MHN 353 (scale bar = 1 cm). Photo by Henry Agudelo.

FIGURE 50. Paratype of Trichomycterus gorgona ICN-MHN 10019 (scale bar = 1 cm). Photo by Henry Agudelo.

FIGURE 51. Paratypes of Trichomycterus ocanaensis ICN-MHN 16919 (scale bar = 1 cm). Photo by Henry Agudelo.

FIGURE 52. Paratype of Trichomycterus ruitoquensis ICN-MHN 16920 (scale bar = 1 cm). Photo by Henry Agudelo.

FIGURE 53. Paratype of Trichomycterus torcoromaensis ICN-MHN 19539 (scale bar = 1 cm). Photo by Henry Agudelo.