scholarly journals A new species of Gymnotus (Gymnotiformes: Gymnotidae) from the Fitzcarrald Arch of southeastern Peru

2009 ◽  
Vol 7 (4) ◽  
pp. 579-585 ◽  
Author(s):  
Emmanuel L. Maxime ◽  
James S. Albert
Keyword(s):  
New Species ◽  
Median Number ◽  
Color Pattern ◽  
Species Group ◽  
The Body ◽  
Head Length ◽  
Head Width ◽  
Oxbow Lakes ◽  
Anterior Portion ◽  
Body Depth

Herein Gymnotus chaviro is described from the Alto Yuruá (upper rio Juruá) of southeastern Peru, where it is locally abundant in terra firme streams and floodplain oxbow lakes, and occurs sympatrically and syntopically with the type species of the genus G. carapo. The new species is diagnosed by a unique combination of morphometric, meristic, and osteological traits, and a characteristic color pattern in which the dark band-pairs are unbranched and incompletely separated, and the pale inter-bands rarely reach to the dorsal mid-line on the anterior half of the body, being crescent-shaped in abdominal area. Gymnotus chaviro is a member of the G. carapo species group, with which it shares the presence of two pores in the dorsolateral portion of the preopercle, dark pigment bands with wavy margins that become broken and/or loose contrast with the ground color through growth, a clear patch at the caudal end of an otherwise darkly pigmented anal fin, and more than four arrowhead-shaped (anteroposteriorly compressed) teeth in the anterior portion of the dentary. Gymnotus chaviro is most similar in external appearance to G. curupira of lowland Western Amazonia in possessing a slender lateral profile (mean body depth less than 9% total length), a similar color pattern (median number of bands 19 with bands less distinct on dorsum), a large inter-orbital distance (mean greater than 41% head length), a broad head (mean head width greater than 65% head length) and a large mouth (mean mouth width greater than 43% head length). This new species can also be distinguished from G. curupira by the configuration of the preopercular pores, and by several meristic traits of squamation and fin rays. This is the first gymnotiform species described from the interior of the Fitzcarrald Arch, and the only gymnotiform species known to date that is endemic to this upland region of the western Amazon.

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.  

A new species of Zoniopoda Stål (Orthoptera: Acridoidea: Romaleidae) from Argentina and its phylogenetic position within the genus

Zootaxa ◽  
2011 ◽  
Vol 2913 (1) ◽  
pp. 27 ◽  
Author(s):  
MARTINA E. POCCO ◽  
GONZALO D. RUBIO ◽  
M. MARTA CIGLIANO
Keyword(s):  
New Species ◽  
Cladistic Analysis ◽  
Type Specimen ◽  
Morphological Characters ◽  
Color Pattern ◽  
Species Group ◽  
The Body ◽  
Phylogenetic Position ◽  
Median Carina ◽  
A New Species

A new species of the romaleid grasshopper genus Zoniopoda Stål (Romaleidae: Romaleini) is described and illustrated from the Sierras Chicas of Córdoba Province, central Argentina. A cladistic analysis based on morphological characters indicates that the genus Zoniopoda constitutes a monophyletic group and that Zoniopoda serrana n. sp. must be assigned to Iheringi species group based on synapomorphies of the pronotum and body color. The new species is similar to Z. similis Bruner from Paraguay, Bolivia and Brazil, from which it can be distinguished by the color pattern of the body, shape of the pronotal dorso-median carina and characters of the male terminalia and epiphallus. This paper has been formatted with embedded links to images of the type specimen, maps based on georeferenced specimen data for the genus and an updated key to the species of Zoniopoda available on the Orthoptera Species File (OSF) online (http://orthoptera.speciesfile.org).

scholarly journals A new species of the genus Pimelodus La Cépède, 1803 from the rio Iguaçu basin and a reappraisal of Pimelodus ortmanni Haseman, 1911 from the rio Paraná system, Brazil (Ostariophysi: Siluriformes: Pimelodidae)

2007 ◽  
Vol 5 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Julio Cesar Garavello ◽  
Oscar Akio Shibatta
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Head Length ◽  
Santa Catarina ◽  
Body Depth ◽  
Type Series ◽  
Adipose Fin ◽  
A New Species

A new species, Pimelodus britskii, is described from the rio Iguaçu in the rio Paraná drainage, on the border of Paraná and Santa Catarina states, Brazil. Specimens of this species were wrongly included in the type series of Pimelodus ortmanni. Pimelodus britskii is distinguished from its congeners by color pattern, having circular dark brown blotches usually smaller than one orbital diameter, regularly and scattered along the trunk. Differs from P. ortmanni by the following characters: body depth at posterior cleithral process greater than head length; lips not prominent; and maxillary barbel reaching or surpassing vertical drawn through median of adipose fin. Pimelodus britskii represents the second species of the genus Pimelodus from the rio Iguaçu basin.

scholarly journals Akysis longifilis, a new species of catfish (Teleostei: Akysidae) from Myanmar

Zootaxa ◽  
2006 ◽  
Vol 1150 (1) ◽  
pp. 19 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Species Group ◽  
Head Width ◽  
Posterior Edge ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Pectoral Spine ◽  
Adipose Fin ◽  
Peduncle Length ◽  
A New Species

Akysis longifilis, new species, is described from the Sittang River drainage in Myanmar. It is a member of the A. variegatus species group and can be distinguished from congeners in the group (except for A. brachybarbatus, A. fuliginatus, A. pictus, A. prashadi, A. variegatus, A. varius and A. vespa) in having a smooth (vs. serrated) posterior edge of the pectoral spine. It is distinguished from A. brachybarbatus, A. fuliginatus, A. pictus, A. prashadi, A. variegatus, A. varius and A. vespa in having a unique combination of: length of adipose-fin base 25.7–31.1% SL, body depth at anus 9.7–13.6% SL, caudal peduncle length 18.3–23.2% SL, caudal peduncle depth 5.6–7.2% SL, head width 21.1–24.7% SL, nasal barbel length 67.4–96.4% HL, maxillary barbel length 123.2–159.6% HL, vertebrae 33–35, body with light saddle-shaped spots, and caudal fin forked.

scholarly journals A new species of Panaqolus (Siluriformes: Loricariidae) from the rio Madeira basin with remarkable intraspecific color variation

2015 ◽  
Vol 13 (3) ◽  
pp. 461-470 ◽  
Author(s):  
Christian Andreas Cramer ◽  
Lúcia Helena Rapp Py-Daniel
Keyword(s):  
New Species ◽  
Color Pattern ◽  
The Body ◽  
Color Variation ◽  
Head Length ◽  
Madre De Dios ◽  
White Water ◽  
A New Species ◽  
Fish Species Diversity ◽  
Rio Madeira

The rio Madeira is the largest white-water tributary of the Amazon, and is currently the river drainage with the highest fish species diversity in the world. A new species of Panaqolus was recognized from the middle Madeira and Mamoré rivers (Brazil) and from the Madre de Dios drainage (Peru) and it is described herein. This new species is readily distinguished from its congeners by the large number of white dots distributed all over the body and by its remarkable amplitude of color pattern variation, ranging from a pale, light brown, to dark brown and almost black background coloration. The new species closely resembles P. albomaculatus but has more and smaller dots on the body, a smaller orbital diameter (12.5-16.8% head length vs. 16.0-20.0%) and longer maxillary barbels (9.7-19.6% head length vs. 1.6-8.9%). The new species is the second of the genus Panaqolus described for a Brazilian location after nearly 80 years of the description of P. purusiensis.

A new pearlfish, Onuxodon albometeori sp. nov. (Ophidiiformes: Carapidae), from Taiwan

Zootaxa ◽  
2019 ◽  
Vol 4702 (1) ◽  
pp. 6-9
Author(s):  
KEITA KOEDA
Keyword(s):  
New Species ◽  
Posterior Part ◽  
The Body ◽  
Slender Body ◽  
Head Width ◽  
Single Specimen ◽  
Pectoral Fin ◽  
Body Depth ◽  
Southwestern Taiwan ◽  
Pacific Species

Onuxodon albometeori sp. nov. (Ophidiiformes: Carapidae) is described from a single specimen collected by commercial trawl off southwestern Taiwan. The new species is most similar to the Indo-Pacific species Onuxodon fowleri (Smith 1955), both process a remarkably slender body, and higher precaudal vertebral counts and a longer pectoral fin, although the two latter features are even more extreme in the former. Onuxodon albometeori sp. nov. is further distinguished from O. fowleri by its lesser body depth, greater head width, higher counts of precaudal vertebrae, and uniformly whitish coloration only on the posterior part of the body. 

A new species of Dipsas Laurenti from the Atlantic Forest of Brazil (Serpentes: Dipsadidae)

Zootaxa ◽  
2010 ◽  
Vol 2691 (1) ◽  
pp. 57 ◽  
Author(s):  
DANIEL S. FERNANDES ◽  
OTAVIO A. V. MARQUES ◽  
ANTÔNIO J. S. ARGÔLO
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Color Pattern ◽  
Species Group ◽  
External Morphology ◽  
Posterior Half ◽  
Anterior Portion ◽  
Posterior Portion ◽  
A New Species

Dipsas sazimai sp. nov. is described from the Atlantic Forest of Brazil. The new species is distinguished from all congeners by showing anterior portion of body with rounded dorsal blotches wider than interblotches; median and posterior portion of body with blotches higher than long and narrower than interblotches; posterior body blotches lighter than anterior blotches; posterior blotches with conspicuous white edge in paraventral region; tiny and vertically oriented streaks in the interblotches from the posterior half of body; 187–209 ventral scales; 107–129 subcaudal scales; and the first blotch not reaching the rictus. Based on characters of external morphology and color pattern we suggest the new species is related to taxa of the recently proposed Dipsas incerta species group.

Cardinalfish of the genus Apogonichthyoides Smith, 1949 (Apogonidae) with a description of a new species from the West-Pacific region

Zootaxa ◽  
2010 ◽  
Vol 2348 (1) ◽  
pp. 40 ◽  
Author(s):  
THOMAS H. FRASER ◽  
GERALD R. ALLEN
Keyword(s):  
New Species ◽  
Color Pattern ◽  
Species Group ◽  
The Body ◽  
Body Color ◽  
Caudal Peduncle ◽  
Deep Water Species ◽  
Brownish Black ◽  
A New Species ◽  
Water Species

Apogonichthyoides is resurrected from Apogon (Ostorhinchus) as a valid genus with 19 species. Members of this genus are mostly tannish brown to brownish-black in body color. The head and body usually have brownish to blackish spots (sometimes stripe-like), a darkish cheek line and usually two body bars. An ocellus may be present below the lateral line on the body or absent. One or more caudal-peduncular bars and/or a basicaudal spot are often present. Insertion patterns of supraneurals and pterygiophores are given for 11 species. Apogonichthyoides umbratilis, a new species, has 14 pectoral rays and five bars (three faint) on the body and caudal peduncle. Color pattern of the new species suggest relationships with Apogonichthyoides gardineri, A. timorensis and A. opercularis. Descriptions and illustrations of the latter two species are provided for comparison. Apogonichthyoides gardineri, a rare, deep-water species is characterized by 14 pectoral rays, two bars on the body and one wide bar near the base of the caudal peduncle. Specimens of Apogonichthyoides timorensis usually have 15–16 pectoral rays and two or three bars on the body and caudal peduncle. Specimens of Apogonichthyoides opercularis have nine soft anal rays and 10 soft dorsal rays. A key to eight species included in the timorensis species group is provided. A lectotype and paralectotypes are designated for the syntype series of Apogon opercularis. New name combinations follow: Apogonichthyoides atripes, A. brevicaudatus, A. cantoris, A. chrysurus, A. euspilotus, A. gardineri, A. heptastygma, A. niger, A. opercularis, A. pharaonis, A. pseudotaeniatus, A. regani, A. sialis and A. timorensis. Previous usage includes: Apogonichthyoides enigmaticus, A. nigripinnis, A. taeniatus and A. uninotatus

Botia udomritthiruji, a new species of botiid loach from southern Myanmar (Teleostei: Botiidae)

Zootaxa ◽  
2007 ◽  
Vol 1608 (1) ◽  
pp. 41-49 ◽  
Author(s):  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Color Pattern ◽  
The Body ◽  
Central Portion ◽  
Caudal Peduncle ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Vertical Bars ◽  
A New Species

Botia udomritthiruji sp. nov. is described from the Tenasserim River drainage in southern Myanmar. It can be distinguished from congeners by its color pattern, consisting of five dark vertical bars on the body, with the central portion of these bars paler than its edges; with increasing age, the edges of these bars become more irregular and darker, and irregular dark spots on the pale interspaces begin to form, sometimes fusing with the edges of the vertical bars. In morphology, it differs from congeners by a combination of: body depth at anus 23.4–27.7% SL, caudal peduncle depth 15.9– 18.7% SL, and 12 dorsal-fin rays. Evidence for considering B. macrolineata a junior synonym of B. dario and for considering B. rostrata a species distinct from B. almorhae is also presented here.

scholarly journals Three new species of Astyanax from drainages of southern Brazil (Characiformes: Characidae)

2013 ◽  
Vol 11 (3) ◽  
pp. 537-552 ◽  
Author(s):  
Carlos A. S. de Lucena ◽  
Jonas Blanco Castro ◽  
Vinicius A. Bertaco
Keyword(s):  
New Species ◽  
Lateral Line ◽  
The Body ◽  
Head Length ◽  
Southern Brazil ◽  
Body Depth ◽  
Lateral Band ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Three New Species

Three new species of Astyanax are described from southern Brazil: A. dissensus and A. xiru from the laguna dos Patos system and rio Uruguay basin, the first species also occurring in the rio Tramandaí system, and A. procerus from the laguna dos Patos system. Astyanax procerus and A. xiru possess outer row premaxillary teeth pentacuspid and inner row heptacuspid, maxillary with one tri- to pentacuspid teeth, 18-23 branched anal-fin rays, and two humeral spots. Astyanax procerus has the largest body depth (38.3-46.0% of SL), while A. xiru has the lowest body depth (32.5-37.5% of SL) among the three species. The characters combination can distinguish these species from its congeners. Astyanax dissensus distinguish from Astyanax species by the presence of one developed heptacuspid teeth on maxillary, 22-28 branched anal-fin rays, 35-39 perforated scales along the lateral line, two humeral spots, conspicuous lateral band continuous on middle caudal rays, 6-7 scale row between dorsal-fin origin and lateral line, and head length 22.7-27.3% of SL. All three species has the predorsal region of the body scaled. An identification key to the species of Astyanax species from the rio Uruguay basin, and laguna dos Patos and rio Tramandaí systems is provided.

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