Pimelodus crypticus

Villa-Navarro, Francisco Antonio, Acero, Arturo & Cala, Plutarco Cala, 2017, Taxonomic review of Trans-Andean species of Pimelodus (Siluriformes: Pimelodidae), with the descriptions of two new species, Zootaxa 4299 (3), pp. 337-360: 354-356

publication ID

https://doi.org/10.11646/zootaxa.4299.3.2

publication LSID

lsid:zoobank.org:pub:7838D461-3D2E-4034-8CA1-ECFE7BD58736

persistent identifier

http://treatment.plazi.org/id/03F68789-FF84-FD3C-3AED-F9FFDD38C5D5

treatment provided by

Plazi

scientific name

Pimelodus crypticus
status

new species

Pimelodus crypticus  , new species, Villa-Navarro & Cala

Holotype: CZUT-IC 1986, 209.3 mm SL (XR), Colombia, Departament of Cauca, Timba, Cauca River, La Balastrera sector, 03° 03’ 03’’N, 76° 39’ 56’’W, 1 Sep 2000, F. A. Villa-Navarro.GoogleMaps 

Paratypes: CZUT-IC 1983 (4, 138.0–246.0 mm LS) collected with holotypeGoogleMaps  ; CZUT-IC 1991 (5 XR, 119.89– 246.04 mm SL) collected with holotypeGoogleMaps  ; CZUT-IC 1992 (2 XR, 194.8– 185.8 mm SL) collected with holotypeGoogleMaps  ; CZUT-IC 1992 (1 C&S, 65 mm SL) collected with holotypeGoogleMaps  ; CZUT-IC 2011 (1, 237.6 mm SL) collected with holotypeGoogleMaps  ; IAvH 10807 (1, 128.93 mm SL) collected with holotypeGoogleMaps  ; CZUT-IC 1818 (1 SK, 135.1 mm SL), Colombia, Valle del Cauca, Cauca River , El Hormiguero sector, 03° 18’ 53’’ N, 76° 28’ 37” WGoogleMaps  ; CZUT-IC 1819 (1 SK, 157.5 mm SL), Colombia, Valle del Cauca, Cauca River , El Hormiguero sector, 03° 18’ 53’’ N, 76° 28’ 37” WGoogleMaps  ; CZUT-IC 1820 (1 SK, 120.0 mm SL), Colombia, Valle del Cauca, Cauca River , El Hormiguero sector, 03° 18’ 53’’ N, 76° 28’ 37” WGoogleMaps  ; CZUT-IC 1821 (1 SK, 125.5 mm SL), Colombia, Valle del Cauca, Cauca River , El Hormiguero sector, 03° 18’ 53’’ N, 76° 28’ 37” WGoogleMaps  ; ICNMHN 16391 (1, 181.21 mm SL); IMCN 286 (6, 163.01 - 200.76 mm SL), Colombia, Cauca, Suarez, Ovejas River , Nov 1995, S. Usma  ; IMCN 3555 (1, 164.21 mm SL), Colombia, Valle del Cauca, El Hormiguero sector, Cauca River , 12 Oct 2002, A. Ortega-Lara. 

Diagnosis. Pimelodus crypticus  differs from all trans-Andean Pimelodus  species except P. grosskopfii  , in having a long adipose fin (23.4–28.8% SL vs. 14.1–22.5% SL); and differs from all trans-Andean Pimelodus  species except P. yuma  n. sp., in having a uniform color pattern, without spots or stripes on the body, fins, the dorsal surface of the head and supraoccipital process (vs. dark spots present). Pimelodus crypticus  differs from P. grosskopfii  in having a longer predorsal distance (37.5–40.7% SL vs. 33.0–37.3% SL) ( Fig. 15View FIGURE 15) and a longer head (26.4–30.4% SL vs. 22.8–25.9% SL); and from P. blochii  in having a longer adipose fin (23.4–28.8% SL vs. 17.0– 22.6% SL) and a smaller eye (14.8–21.6% HL vs. 22.1–27.5% HL).

Description. N=13. Morphometric data presented in Table 2. Body deeper than wide; roof of cranium ornamented with small (but visible) smooth granules. Eye diameter less than interorbital width. Snout convex, projected beyond mandibular symphysis. Mouth subterminal, when closed leaving more than one half of premaxillary tooth patch exposed; those teeth conical, small and narrow. Fontanel opened from mesethmoids to frontals, ending at vertical through posterior third of eye. Maxillary barbels reach base of anal fin, sometimes surpassing base of last anal-fin ray; inner mental barbels reaching pectoral-fin bases; external mental barbels reaching pelvic-fin bases.

Dorsal fin lepidotrichia II,6; the first a spinelet narrow and angular, spine strong, slightly curved and sharply pointed. Adipose fin long, its margin rectangular, its anterior apex at vertical through base of first or second branched anal-fin ray. Pectoral fins (I,8); spine strong sharply pointed and forming slight arc. Pelvic fins i,5; first branched ray longest, fins inserted at vertical through base of penultimate dorsal-fin ray. Anal fin iii,7-9 with first branched ray longest. Caudal fin i,15,i; forked, lobes pointed, dorsal lobe equal or slightly longer than ventral.

Lateral line complete, extending beyond base of caudal fin for half-length of middle caudal-fin rays. Cleithral process extensive, strong, triangular, posterodorsal margin concave, ventral margin straight. Apparently without sexual dimorphism.

Color in alcohol. ( Fig. 14View FIGURE 14) Body and head, including cheeks, snout and cleithral process dark tan, posterior third of sides of body above lateral line gray. Lateral line tan or white, ventral region light tan or whitish, without stripes or spots. Base of dorsal-fin spine dark. Fins yellow, lighter distally; margins of dorsal and adipose fins black; ventral lobe without dark diffuse stripe. Dorsal surface of maxillary barbels tan.

Distribution. Cauca River from La Virginia (Risaralda Department) to La Salvajina reservoir (Cauca Department) ( Fig. 4View FIGURE 4).

Etymology. The name crypticus  is Greek for hidden, this species having been hidden as consequence of the prior confusion between this new species in the Cauca river and P. yuma  new species.