Pseudeutropius indigens, a new species of schilbeid catfish (Teleostei: Siluriformes) from peninsular Thailand

Zootaxa ◽  
2011 ◽  
Vol 3037 (1) ◽  
pp. 45
Author(s):  
HEOK HEE NG ◽  
CHAVALIT VIDTHAYANON
Keyword(s):  
New Species ◽  
Head Length ◽  
Head Width ◽  
Fin Rays ◽  
A New Species

Pseudeutropius indigens, a new species of schilbeid catfish from peninsular Thailand, is described here. It can be distinguished from congeners in having the following combination of characters: head length 23.1–24.3% SL, head width 10.5– 11.0% SL, length of anal-fin base 45.6–50.4% SL, 37–41 anal-fin rays, isognathous jaws in which the premaxillary teeth are not visible when the mouth is closed, and long nasal, maxillary and mandibular barbels that reach to at least the analfin origin.

Ituglanis compactus, a new species of catfish (Siluriformes: Trichomycteridae) from the rio Jari drainage, lower Amazon, Brazil 

Zootaxa ◽  
2017 ◽  
Vol 4244 (2) ◽  
pp. 207 ◽  
Author(s):  
ÍTHALO DA SILVA CASTRO ◽  
WOLMAR BENJAMIN WOSIACKI
Keyword(s):  
New Species ◽  
Body Size ◽  
Head Length ◽  
New Taxon ◽  
Pectoral Fin ◽  
Reduced Body ◽  
Weberian Apparatus ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

A new species of Ituglanis is described from rio Iratapuru, near the rio Jari, Amapá, Brazil. The new species is distinguished from all congeners by the reduced number of post-Weberian apparatus vertebrae (36 or 37); the low number of paired ribs (2); the low number of interopercular odontodes (12–15); the number of branchiostegal rays (7 or 8); the presence of elongated fontanel in parieto-supraoccipital; the pectoral-fin rays (i,5); head length (18.9–25.0); and the presence of pores supraorbital s1, infraorbitals i1 and i3 of the laterosensory system. The new taxon has a reduced body size and fully ossified skeleton, but does not display a large number of paedomorphic traits compared to congeners. Comments about taxonomy and intrageneric comparisons are made, and paedomorphic in Ituglanis is discussed. Thoughts about conservation of the new species are presented. 

A new species of Leptolalax (Anura: Megophryidae) from Laos

Zootaxa ◽  
2010 ◽  
Vol 2681 (1) ◽  
pp. 35 ◽  
Author(s):  
JODI J. L. ROWLEY ◽  
BRYAN L. STUART ◽  
STEPHEN J. RICHARDS ◽  
SOMPOUTHONE PHIMMACHAK ◽  
NIANE SIVONGXAY
Keyword(s):  
New Species ◽  
Dominant Frequency ◽  
Head Length ◽  
Evergreen Forest ◽  
Head Width ◽  
Adult Males ◽  
Adult Females ◽  
A New Species

We describe a new species of megophryid frog in the genus Leptolalax from southern Laos. Leptolalax aereus sp. nov. is distinguished from its congeners by a combination of size (25.1–28.9 mm in 28 adult males, 27.1–38.6 mm in 12 adult females), absence of distinct black or dark brown dorsolateral markings on head, near immaculate white chest and belly, head length greater than head width, no webbing or lateral fringing on fingers, rudimentary webbing between toes I–IV and no webbing between toes IV–V, toes with weak lateral fringing, and a call consisting of an average of 3–4 notes containing 1–2 pulses, and with a dominant frequency of 6187.5–7875 Hz. The new species is associated with rocky streams in semi-evergreen and evergreen forest between 284–511 m elevation.

New species of glass knifefish Eigenmannia loretana (Gymnotiformes: Sternopygidae) from the Western Amazon

Zootaxa ◽  
2018 ◽  
Vol 4399 (3) ◽  
pp. 399 ◽  
Author(s):  
BRANDON T. WALTZ ◽  
JAMES S. ALBERT
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Species Group ◽  
Head Length ◽  
Valid Species ◽  
External Appearance ◽  
Pectoral Fins ◽  
Distinct Phenotype ◽  
Fin Rays ◽  
A New Species

A new species of the Eigenmannia trilineata species group is described from the Loreto, Peru region of the western Amazon basin. The new species is similar in external appearance to members of the E. trilineata species group, but has a distinct phenotype, being diagnosed from congeners by the following unique combination of characters: four longitudinal dark pigment stipes on the lateral surfaces (over the lateral line, hypaxial muscles, proximal and distal pterygiophore margins); short, relatively round head (head depth 86.8–96.7% head length) with a terminal mouth; intermediate posterodorsal expansion of infraorbital bones 1+2 (60–75% length of infraorbitals 1+2); 11–15 teeth in three rows on the premaxilla; six to seven teeth in a single row on the endopterygoid; eye high on head (suborbital depth 28–36% head length); ii, 13–14 pectoral-fin rays; 183–219 anal-fin rays; and a uniformly dark brown head and pectoral fins on freshly-preserved specimens. The new species extends the geographic range of described species of the E. trilineata species group to the Western Amazon. This new species elevates the current number of valid species within the E. trilineata species group to 15, and the number of species within Eigenmannia to 20. 

scholarly journals A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil

2007 ◽  
Vol 5 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Marcelo S. Rocha ◽  
Renildo R. de Oliveira ◽  
Lúcia H. Rapp Py-Daniel
Keyword(s):  
New Species ◽  
Head Length ◽  
Black Dot ◽  
Gill Rakers ◽  
Mato Grosso ◽  
Lateral Process ◽  
Snout Length ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

A new species of Propimelodus from the middle course of the rio Araguaia is described. Propimelodus araguayae, new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs. a different pattern), large eyes (29.7-34.8% of head length and 62.7-74.7% of snout length vs. 14.5-21.1% and 31-44% in P. caesius and 9.5-19.7% and 17-38% in P. eigenmanni), anal-fin lobe present (vs. absent), premaxillary bone with three irregular rows of teeth (vs. 4-5 in P. caesius and 5-8 in P. eigenmanni), tip of anterior lateral process of basipterygium at the same level as the tip of the anterior medial process (vs. anterior lateral process extending beyond the tip of the anterior medial process), total number of vertebrae (43-44 vs. 47-48 in P. caesius and 45-46 in P. eigenmanni) and total number of gill rakers (28-33 vs. 20-23 in P. caesius and 19-20 in P. eigenmanni). This new species is possibly endemic to the middle course of the rio Araguaia.

scholarly journals New Hyphessobrycon from the upper rio Pardo drainage in eastern Brazil (Teleostei: Characiformes: Characidae)

2007 ◽  
Vol 5 (3) ◽  
pp. 245-249 ◽  
Author(s):  
Vinicius A. Bertaco ◽  
Luiz R. Malabarba ◽  
Jorge A. Dergam
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Standard Length ◽  
Minas Gerais ◽  
The Body ◽  
Head Length ◽  
Eastern Brazil ◽  
Fin Rays ◽  
Spot 5 ◽  
A New Species

A new species of characid, Hyphessobrycon vinaceus, is described from the upper rio Pardo, Minas Gerais, Brazil. The new species is distinguished from all other Hyphessobrycon species by the combination of the following characters: the body red or reddish pigmented in live specimens, an anterior and conspicuous vertically elongate black humeral spot followed by a second faint humeral spot, 5 teeth in the inner series of premaxilla, maxilla with 2-3 pentacuspidate teeth, 15-17 branched anal-fin rays, 4-5 scale rows above and 3-4 scale rows below lateral line, lateral line with 10-26 perforated scales, 32-34 scales in a longitudinal series, and by a smaller head length in relation to standard length (23.9-26.7%).

scholarly journals A new species of Astyanax (Ostariophysi: Characidae) from the headwaters of the arheic Río Sucuma, Catamarca, Northwestern Argentina

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
Guillermo E. Terán ◽  
Cristina I. Butí ◽  
J. Marcos Mirande
Keyword(s):  
New Species ◽  
Lateral Line ◽  
Head Length ◽  
Abrupt Decrease ◽  
Northwestern Argentina ◽  
Fin Rays ◽  
Posterior Field ◽  
A New Species

ABSTRACT A new species of Astyanax is described from the arheic system of Río Sucuma, in Catamarca, Northwestern Argentina. The new species is distinguished from its congeners by a combination of characters including the presence of a broad vertical humeral spot, absence of maxillary teeth, and absence of circuli in posterior field of scales. Furthermore, this species is distinguished by the orbital diameter, head length, branched anal-fin rays, perforated lateral-line scales, transverse scales, dentary teeth with abrupt decrease in size. This species is, to date, the single known fish endemic of Río Sucuma basin.

New pored Leposternon (Squamata, Amphisbaenia) from Brazilian Cerrado

Zootaxa ◽  
2008 ◽  
Vol 1930 (1) ◽  
pp. 18-38 ◽  
Author(s):  
SÍRIA RIBEIRO ◽  
WILIAN VAZ-SILVA ◽  
ALFREDO P. SANTOS-JR.
Keyword(s):  
New Species ◽  
Head Length ◽  
Head Width ◽  
Brazilian Cerrado ◽  
Check List ◽  
A New Species

A new species of Leposternon is described from the Brazilian Cerrado, southwestern Goiás state. The new species is diagnosed mainly by the following characters: two–four precloacal pores, 299–341 dorsal postpectoral half-annuli, 302– 349 ventral postpectoral half-annuli, 13–15 tail annuli, 118–121 precloacal vertebrae, two supralabials, two infralabials, five series of large plates in dorsal head shields, diamond-shaped pectoral scales, head length 2.6–3.2% snout-vent length, rostronasal length 20.4–23.1% head length, azygous width 30.8–41.9% head width, azygous length 40.1–51.4% head length, frontal length 23.7–38.2% head length, and prefrontal length 37.2–44.4% head length. The new species here described is the only known Leposternon restricted to the Cerrado region. Additionally, we present an updated check list of non-fossil amphisbaenians according to ecoregions in the Brazilian territory.

Syngnathus chihiroe, a new species of pipefish (Syngnathidae) from southern Japan

Zootaxa ◽  
2017 ◽  
Vol 4232 (3) ◽  
pp. 385 ◽  
Author(s):  
MIZUKI MATSUNUMA
Keyword(s):  
New Species ◽  
Head Length ◽  
Northwestern Pacific ◽  
Pectoral Fin ◽  
Snout Length ◽  
Dorsal Fin ◽  
Southern Japan ◽  
Fin Rays ◽  
A New Species ◽  
Pectoral Fin Rays

A new species of pipefish, Syngnathus chihiroe sp. nov., (Syngnathidae), is described on the basis of a single specimen collected off Yakushima Island (East China Sea), southern Japan in a depth of 160–162 m. The new species is readily distinguished from all congeners by the combination of the following characters: dorsal-fin rays 38, pectoral-fin rays 17, trunk rings 18, tail rings 40, subdorsal rings 3.25 + 10.0 = 13.25, head length 8.7 in standard length, snout length 2.3 in head length and snout depth 3.7 in snout length. The new species is similar to Syngnathus schlegeli Kaup 1853, the only other northwestern Pacific Ocean congener, characterized by dorsal-fin rays 30–47, trunk rings 18–20 and tail rings 38–46. However, it differs from S. schlegeli in having a greater number of pectoral-fin rays (17 in the former vs. 11–15 in the latter), and a short deep snout (snout length 2.3 in head length and snout depth 3.7 in snout length vs. 1.6–2.0 and 5.6–11.3, respectively). 

A new species of the genus Megophrys (Anura: Megophryidae) from Yunnan Province, China

Zootaxa ◽  
2018 ◽  
Vol 4413 (2) ◽  
pp. 325 ◽  
Author(s):  
JIAN-HUAN YANG ◽  
JIAN WANG ◽  
YING-YONG WANG
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Dominant Frequency ◽  
The Body ◽  
Head Length ◽  
Type Locality ◽  
Advertisement Call ◽  
Head Width ◽  
Dorsal Skin ◽  
A New Species

We describe a new horned toad species of the genus Megophrys from Yingjiang County of Yunnan Province, China. The new species, Megophrys feii sp. nov., can be distinguished from its congeners by a combination of the following characters: (1) body slender and small (SVL 24.3–25.1 mm in four males, 28.2–28.9 mm in two females); (2) head length about equal to head width (HDL/HDW 0.97–0.99); (3) tympanum circular and distinct; (4) maxillary teeth present; (5) vomerine ridges and vomerine teeth absent; (6) tongue round, slightly notched posteriorly; (7) tibia long (TIB/SVL 0.48–0.52 in four males, 0.54–0.55 in two females), shanks overlapping when thighs are held at right angles to the body; (8) dorsal skin distinctly granular and densely covered with small tubercles; (9) lower flanks and lateral sides of belly scattered with small but prominent, white, tubercles; (10) webbing between toes rudimentary; (11) lateral fringes on toes moderate to wide; (12) breeding males without nuptial pads and spines on fingers; (13) protruding projection posterior to cloaca present in both sexes; (14) groin and ventral thigh coloration in life not contrasting with surrounding regions; (15) the presence of an indistinct and small horn-like tubercle at the edge of the eyelid; and (16) an advertisement call with a dominant frequency of 4.74–4.91 kHz (at 18 ˚C). To date, the new species has only been found at its type locality in stream areas in montane evergreen broadleaf forests between 700–1200 m elevation. 

scholarly journals New species of Cyphocharax (Characiformes: Curimatidae) from the upper rio Negro, Amazon basin

2014 ◽  
Vol 12 (2) ◽  
pp. 327-332 ◽  
Author(s):  
Bruno F. Melo ◽  
Richard P. Vari
Keyword(s):  
New Species ◽  
Amazon Basin ◽  
Caudal Peduncle ◽  
Caudal Fin ◽  
Rio Negro ◽  
Fin Rays ◽  
Dark Pigmentation ◽  
Northern Brazil ◽  
Adipose Fin ◽  
A New Species

A new species of Cyphocharax, Curimatidae, apparently endemic to the blackwater upper rio Negro of the Amazon basin in northern Brazil, is described.The new species is readily distinguished from its congeners by the presence of a distinctly longitudinally elongate, posteriorly vertically expanding patch of dark pigmentation along the midlateral surface of the caudal peduncle, with the patch extending from the base of the middle caudal-fin rays anteriorly past the vertical through the posterior terminus of the adipose fin. The new species additionally differs from all congeners in details of body and fin pigmentation and meristic and morphometric ratios. Evidence for the assignment of the species to Cyphocharax and the occurrence of other species of the Curimatidae apparently endemic to the upper rio Negro catchment is discussed.

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