Ancistrus falconensis n. sp. and A. gymnorhynchus Kner (Siluriformes: Loricariidae) from central Venezuelan Caribbean coastal streams

Zootaxa ◽  
2010 ◽  
Vol 2345 (1) ◽  
pp. 19 ◽  
Author(s):  
DONALD C. TAPHORN ◽  
JONATHAN W. ARMBRUSTER ◽  
DOUGLAS RODRÍGUEZ-OLARTE
Keyword(s):  
New Species ◽  
Habitat Loss ◽  
Water Diversion ◽  
Spine Length ◽  
Dentary Tooth ◽  
Coastal Streams ◽  
Western Caribbean ◽  
Pectoral Spine ◽  
Mouth Width ◽  
A New Species

A new species, Ancistrus falconensis, is described from the Hueque and Ricoa Rivers, small, isolated Caribbean drainages of northwest Falcón state, (Western Caribbean Zoogeographic Province) Venezuela and compared with A. gymnorhynchus Kner 1854 which occurs in adjacent drainages to the south. Adults of Ancistrus falconensis usually have small light spots on the abdomen in preserved specimens whereas A. gymnorhynchus almost always has the abdomen uniformly gray). They are further distinguished by the following ratios in specimens greater than 60 mm SL: mouth width/pectoral spine length (0.661–0.915 vs. 0.480–0.669, (two specimens of 88 overlap), dentary tooth cup length/ pectoral spine length (0.207–0.264 vs. 0.143–0.198), and premaxillary tooth cup length/pectoral spine length (0.146– 0.215 vs. 0.215–0.318). Falcón state is arid in the area of the type locality of A. falconensis, and water resources face increasing demands for urban, agricultural and industrial uses. Deforestation, river channelization and water diversion heavily impact most coastal streams, causing accelerating habitat loss and degradation. Thus, this new species must be considered vulnerable to extinction.

scholarly journals A new species of Microglanis Eigenmann, 1912 (Siluriformes, Pseudopimelodidae) from rio São Francisco basin, Brazil

Zootaxa ◽  
2006 ◽  
Vol 1302 (1) ◽  
pp. 31 ◽  
Author(s):  
HORÁCIO MORI ◽  
OSCAR A. SHIBATTA
Keyword(s):  
New Species ◽  
Head Length ◽  
Dorsal Spine ◽  
Occipital Region ◽  
Spine Length ◽  
Dark Stripe ◽  
Pectoral Spine ◽  
Gill Filaments ◽  
A New Species

Microglanis leptostriatus n. sp. is described from the middle-upper rio São Francisco basin. The new species is distinguished from its congeners by the following combination of characters: light transverse stripe, located in occipital region between the opercular openings, thin and sinuous; pale region below dorsal and adipose fins mottled with brown spots; and a dark stripe in the axis of gill filaments in alcohol preserved specimens. Microglanis leptostriatus is further distinguished from M. parahybae and M. garavelloi, the closest species geographically, by having the following combination of characters: longer head length [28.3–32.1% of SL (mean = 30.0) versus 25.5–28.5% (mean = 27.2) and 25.2–30.2 (mean = 28.0), respectively], shorter dorsal spine length [11.7–14.9% of SL (mean = 13.6) versus 14.1–18.1% (mean = 16.0) and 11.3–19.0 (mean = 15.5)], shorter pectoral spine length [12.5–19.7% of SL (mean = 17.4) versus 19.4–22.7% (mean = 20.6) and 18.5–26.2 (mean = 22.1)].

scholarly journals A new species of Hemiancistrus from the rio Araguaia basin, Goiás state, Brazil (Siluriformes: Loricariidae)

2008 ◽  
Vol 6 (3) ◽  
pp. 419-424 ◽  
Author(s):  
Lesley S. de Souza ◽  
Marcelo R. S. Melo ◽  
Carine C. Chamon ◽  
Jonathan W. Armbruster
Keyword(s):  
New Species ◽  
Standard Length ◽  
Adult Males ◽  
Southern Brazil ◽  
Spine Length ◽  
Coastal Streams ◽  
Adipose Fin ◽  
A New Species ◽  
Meristic Data ◽  
Pelvic Fin

Hemiancistrus cerrado is described from the tributaries of rio Araguaia, rio Tocantins basin. Hemiancistrus cerrado has external similarities with H. megalopteryx and H. punctulatus from coastal streams of southern Brazil, and can be distinguished by having a larger internarial width, 15.9-21.1% of head length (vs. 11.2-14.0% in H. megalopteryx and 11.2-13.9% in H. punctulatus) and, with little overlap, by the larger adipose-fin spine length, 9.4-13.6% of standard length (vs. 7.1-8.7% in H. megalopteryx and 7.4-10.0% in H. punctulatus). Hemiancistrus cerrado further differs from H. megalopteryx by having the pectoral-fin spine reaching maximally to the middle of the pelvic-fin spine when adpressed in adult males (vs. reaching tip). Hemiancistrus cerrado differs from other members of Hemiancistrus by color and numerous morphometric and meristic data.

Pseudolaguvia ferula, a new species of sisoroid catfish (Teleostei: Erethistidae) from India

Zootaxa ◽  
2006 ◽  
Vol 1229 (1) ◽  
pp. 59 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Head Width ◽  
Body Depth ◽  
Spine Length ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
Brown Body ◽  
A New Species ◽  
Pelvic Fin

Pseudolaguvia ferula, a new species of erethistid catish, is described from the Brahmaputra River drainage in India. It can be distinguished from congeners in having a terete (vs. depressed) head and body, manifested in the narrower head width (17.1–19.1% SL vs. 19.4–23.4), a smaller anterior fontanel (about one third the length of the frontals vs. at least half the length), and very faint, poorly contrasting cream bands that are sometimes absent on some individuals (vs. sharply contrasting cream bands on a brown body). It can be further distinguished from congeners in having a unique combination of the following characters: dorsal-spine length 17.3–18.7% SL, pectoral-spine length 20.2–24.3% SL, pelvic-fin length 13.0–14.7% SL, length of adipose-fin base 11.5–13.0% SL, caudal peduncle depth 6.9–7.8% SL, body depth at anus 12.1–13.8% SL, eye diameter 8.6–11.7% HL, vertebrae 28–30, and thoracic adhesive apparatus reaching to midway between bases of last pectoral-fin ray and first pelvic-fin ray. with its unculiferous ridges joined at their posterior ends.

scholarly journals Microglanis carlae, a new species of bumblebee catfish (Siluriformes: Pseudopimelodidae) from the río Paraguay basin in Paraguay

2008 ◽  
Vol 6 (3) ◽  
pp. 425-432 ◽  
Author(s):  
Héctor S. Vera Alcaraz ◽  
Weferson J. da Graça ◽  
Oscar A. Shibatta
Keyword(s):  
New Species ◽  
Species Complex ◽  
Anterior Margin ◽  
Color Pattern ◽  
Caudal Peduncle ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
A New Species

Microglanis carlae, new species, is described from the río Paraguay basin and distinguished from its congeners by the following combination of characters: paired and anal fins mottled or with thin faint bands, trunk with dark-brown saddles, anterior margin of pectoral spine with serrations retrorse proximally and antrorse distally, tip of pectoral spine as a distinct bony point, continuous portion of lateral line reaching vertical through last dorsal-fin ray, caudal peduncle with irregularly shaped, faint to dark blotch, maxillary barbel surpassing vertical through dorsal-spine origin, and dark bar on posterior flank continuous from base of adipose fin to that of anal fin. The new species is included in the Microglanis parahybae species complex on the basis of color pattern.

A new species of Lobocheilos (Teleostei: Cyprinidae) from East Kalimantan, Indonesian Borneo

Zootaxa ◽  
2018 ◽  
Vol 4399 (4) ◽  
pp. 543
Author(s):  
PATRICK J. CICCOTTO ◽  
HEOK HUI TAN
Keyword(s):  
New Species ◽  
River Basin ◽  
Scale Height ◽  
Head Length ◽  
Caudal Peduncle ◽  
East Kalimantan ◽  
Mouth Width ◽  
Yellow Stripe ◽  
A New Species

Lobocheilos aurolineatus, new species, is described from the Mahakam River basin in East Kalimantan, Indonesian Borneo. It is distinguished from all other species of Lobocheilos except for L. ixocheilos and L. tenura in having one pair of barbels (maxillary) and by the presence of a broad, black midlateral stripe, approximately ¾ scale height in thickness, extending from the operculum to the caudal-peduncle base. Lobocheilos aurolineatus differs from both species in possessing a thin cream to yellow stripe on the anterior ⅔ of the flank, separating the black midlateral stripe from the brown dorso-lateral scales, and by a smaller mouth width (23.5–29.9% head length in L. aurolineatus vs. 32.1–45.0% and 34.4–46.4% head length in L. ixocheilos and L. tenura, respectively). 

Pseudobagarius eustictus, a new species of catfish from northern Laos (Siluriformes: Akysidae)

Zootaxa ◽  
2021 ◽  
Vol 4996 (2) ◽  
pp. 322-330
Author(s):  
HEOK HEE NG ◽  
MAURICE KOTTELAT
Keyword(s):  
New Species ◽  
The Body ◽  
Head Width ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Lower Jaw ◽  
Pectoral Spine ◽  
Eye Diameter ◽  
Adipose Fin ◽  
A New Species

Pseudobagarius eustictus, new species, is described from the Nam Heung drainage (a tributary of the Mekong River) in northern Laos. It is distinguished from congeners in having a unique combination of the following characters: a weakly-produced snout in which the upper jaw extends only slightly beyond the margin of the lower jaw when viewed ventrally, 3 tubercles on the posterior margin of the pectoral spine, eye diameter 8% HL, head width 24.1% SL, dark yellow dorsal and lateral surfaces of the head, pectoral spine lacking elongate extensions, pectoral fin reaching the pelvic-fin base when adpressed against the body, dorsolateral surfaces of body without longitudinal series of prominent tubercles, body depth at anus 13.7% SL, length of adipose-fin base 17.7% SL, caudal-peduncle depth 7.0% SL, and 33 vertebrae.  

Batasio convexirostrum, a new species of catfish (Teleostei: Bagridae) from Koladyne basin, India

Zootaxa ◽  
2011 ◽  
Vol 2901 (1) ◽  
pp. 52 ◽  
Author(s):  
A. DARSHAN ◽  
N. ANGANTHOIBI ◽  
W. VISHWANATH
Keyword(s):  
Standard Length ◽  
Branchial Arch ◽  
Head Length ◽  
Base Length ◽  
Spine Length ◽  
Pectoral Spine ◽  
Eye Diameter ◽  
Adipose Fin ◽  
A New Species ◽  
Pectoral Fin Rays

Batasio convexirostrum, a new bagrid catfish, is described from the Koladyne drainage, Mizoram, India. It is distinguished from congeners by a combination of the following characters: body with a dark-brown oblique predorsal bar on a uniform light-brown background; very short dorsal to adipose distance (1.7–4.1% SL); snout length 39.2–45.5% head length; eye diameter 24.6–29.8% head length; gill rakers on the first branchial arch 4–5; pectoral spine length 14.6–17.6% standard length; adipose-fin base length 31.0–34.9% standard length; post-adipose distance 10.6–13.7% standard length; branched pectoral fin rays 9–10; and 39–40 vertebrae.

Simira colorata (Rubiaceae), a new species from western Ecuador

Phytotaxa ◽  
2017 ◽  
Vol 311 (3) ◽  
pp. 283
Author(s):  
BERTIL STÅHL ◽  
CLAES PERSSON
Keyword(s):  
New Species ◽  
Habitat Loss ◽  
18Th Century ◽  
A New Species

Simira colorata from western Ecuador is described and illustrated. It is distinguished from other species of Simira by having rather small, glabrous leaves, with blades acute or obtuse at base, small non-calycophyllous, 4-merous flowers in rather large, pyramidal inflorescences, and small fruits. In vegetative features it resembles the Amazonian S. rubescens, which differs from S. colorata in its reproductive features. Although new to science, S. colorata, has been known and widely used in the Ecuadorian coast since the 18th century, and is nowadays endangered due to habitat loss.

scholarly journals A new species of Microglanis (Siluriformes: Pseudopimelodidae) from upper rio Paraná basin, Brazil

2005 ◽  
Vol 3 (4) ◽  
pp. 579-585 ◽  
Author(s):  
Oscar Akio Shibatta ◽  
Ricardo Cardoso Benine
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Color Pattern ◽  
Morphometric Characters ◽  
Spine Morphology ◽  
Caudal Fin Shape ◽  
Pectoral Spine ◽  
Paraná Basin ◽  
Parana Basin ◽  
A New Species

Microglanis garavelloi, new species, collected in tributaries of rio Paranapanema and rio Tietê, is the first species of the genus described from upper rio Paraná basin. The new species can be distinguished from other species of Microglanis on morphometric characters, color pattern, caudal-fin shape, pectoral-spine morphology and lateral line development. Characters used specifically to distinguish M. garavelloi from M. cottoides (laguna dos Patos and rio Uruguay basins) and M. parahybae (rio Paraíba do Sul basin) include morphometrics, color pattern and pectoral-spine serration.

A new species of the hermit crab genus Areopaguristes Rahayu & McLaughlin, 2010 (Crustacea: Decapoda: Anomura: Diogenidae) discovered in the Mesoamerican Barrier Reef of Belize, Caribbean Sea

Zootaxa ◽  
2012 ◽  
Vol 3480 (1) ◽  
pp. 67 ◽  
Author(s):  
RAFAEL LEMAITRE ◽  
DARRYL L. FELDER
Keyword(s):  
New Species ◽  
Hermit Crab ◽  
Small Island ◽  
Barrier Reef ◽  
Dense Population ◽  
Western Atlantic ◽  
Western Caribbean ◽  
Mesoamerican Barrier Reef ◽  
Reef Zone ◽  
A New Species

A new species of hermit crab, Areopaguristes tudgei, family Diogenidae, is fully described and illustrated, including acolor photograph. A dense population of this new species was discovered living intertidally in a concealed habitat undercoral boulders covered with calcareous algae, on the crest to fore-reef zone in Carrie Bow Cay, a small island located onthe western Caribbean Mesoamerican Barrier Reef of Belize. This new species, the 24rd of Areopaguristes Rahayu &McLaughlin, 2010, and fourth known in this genus from the western Atlantic, is superficially similar to those of thePaguristes tortugae complex. As in species of that complex, A. tudgei n. sp. has dense plumose setation on the chelipeds,and at least in females, a fringe of plumose setae on the dorsolateral margins of the chelae, and on the dorsal margins ofthe walking legs. The presence in A. tudgei n. sp. of this setal arrangement, previously considered the only definingcharacter of the P. tortugae complex, can be attributed to convergence. The new species is contrasted with all other westernAtlantic congeners, and a key is presented to aid in their identification. A list of all western Atlantic species of Paguristes sensu lato and their current generic assignments is included.

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