scholarly journals Tosanoides aphrodite, a new species from mesophotic coral ecosystems of St. Paul’s Rocks, Mid Atlantic Ridge (Perciformes, Serranidae, Anthiadinae)

ZooKeys ◽  
2018 ◽  
Vol 786 ◽  
pp. 105-115 ◽  
Author(s):  
Hudson T. Pinheiro ◽  
Claudia Rocha ◽  
Luiz A. Rocha
Keyword(s):  
New Taxon ◽  
Undescribed Species ◽  
Mesophotic Coral Ecosystems ◽  
Dorsal Fin ◽  
Unknown Species ◽  
The Pacific ◽  
Fin Rays ◽  
Mid Atlantic Ridge ◽  
The Pacific Ocean ◽  
A New Species

During a recent expedition to St. Paul’s Rocks, Atlantic Ocean, a distinctive and previously unknown species of Anthiadinae was collected at a depth of 120 m. A genetic analysis indicated the undescribed species is a member of the genus Tosanoides, which was only known to occur in the Pacific Ocean. This new taxon is distinguishable from all other Tosanoides species by the following combination of characters: soft dorsal fin rays 15–16; anal fin rays 9; ventral scale rows 9–10; last dorsal spine the longest (instead first through fourth). Here Tosanoidesaphroditesp. n. is described and illustrated, only known from St. Paul’s Rocks.

Review of the fish genus Epinnula Poey (Perciformes: Gempylidae), with description of a new species from the Pacific Ocean

Zootaxa ◽  
2017 ◽  
Vol 4363 (3) ◽  
pp. 393 ◽  
Author(s):  
HSUAN-CHING HO ◽  
HIROYUKI MOTOMURA ◽  
HARUTAKA HATA ◽  
WEI-CHUAN JIANG
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Type Species ◽  
Western Atlantic ◽  
Dorsal Fin ◽  
The Pacific ◽  
Fin Rays ◽  
The Pacific Ocean ◽  
A New Species ◽  
Pelvic Fin

The gempylid fish genus Epinnula is reviewed and two species are recognized. The type species E. magistralis is considered restricted to the western Atlantic Ocean and a new species from the Pacific Ocean is described. The new species, Epinnula pacifica sp. nov., can be distinguished from E. magistralis by 17 or 18 dorsal-fin rays (vs. 15 or 16 in E. magistralis), 15 or 16 anal-fin rays (vs. 13 or 14), 247–268 total scales on lower lateral line (vs. 285–330), a deeper body, relatively high dorsal fin as reflected by the relatively long fin spines and rays, longer dorsal-fin and anal-fin bases, longer pectoral fin, and longer pelvic fin and pelvic spine.

Redescription of Mugil setosus Gilbert 1892 with comments on the occurrence of Mugil curema Valenciennes 1836 in the Pacific Ocean (Teleostei: Perciformes: Mugilidae)

Zootaxa ◽  
2019 ◽  
Vol 4671 (3) ◽  
pp. 396-406
Author(s):  
RICARDO BRITZKE ◽  
NAÉRCIO A. MENEZES ◽  
MAURO NIRCHIO
Keyword(s):  
Pacific Ocean ◽  
Pacific Coast ◽  
The Third ◽  
Dorsal Fin ◽  
The Pacific ◽  
Fin Rays ◽  
The Pacific Ocean ◽  
The Western Pacific ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

Mugil setosus Gilbert 1892 was originally described by Gilbert based on specimens from Clarion Island, in the western and most remote of the Revillagigedo Islands, about 1,000 km off the western Pacific coast of Mexico. Examination of the type of material and recently collected specimens from Ecuador and Peru, resulted in the redescription provided herein. Diagnostic characters of the species were mainly: tip of the pelvic fin reaching beyond the vertical through the base of the third dorsal-fin spine, the pectoral-fin rays with ii+13–14 rays, the anterodorsal tip of second (soft) dorsal fin uniformly dark, and an external row of larger teeth, and more internally a patch of scattered smaller teeth, visible mainly in adults 150 mm SL. The expansion of geographic distribution of Mugil setosus and occurrence of Mugil curema Valenciennes 1836 in the Pacific Ocean are discussed. 

scholarly journals Description of Cathorops manglarensis, a new species from the Colombian Pacific, with redescription of Cathorops multiradiatus (Siluriformes; Ariidae)

Zootaxa ◽  
2007 ◽  
Vol 1529 (1) ◽  
pp. 33-48 ◽  
Author(s):  
ALEXANDRE P. MARCENIUK
Keyword(s):  
Posterior Margin ◽  
Pacific Coast ◽  
Sympatric Species ◽  
Nominal Species ◽  
Key To Species ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
The Pacific ◽  
Fin Rays ◽  
A New Species

Since it was described, Cathorops multiradiatus has been differentiated from congeners through the large number of anal-fin rays ( 25 - 27). In this study, C. multiradiatus is redescribed and a new sympatric species with similar number of anal-fin rays is described and intersexual differences of both species evaluated. Cathorops manglarensis differs from C. multiradiatus by possessing few gill rakers on the first arch ( 13 - 16 vs. 16 - 19), a longer maxillary barbel (28.4 - 38.2 vs. 22.9 - 27.7% SL), longer pectoral-fin spine (18.5 - 22.5 vs. 16.9 - 18.7% SL), posterior margin of pectoral-fin spine with short and inconspicuous serrations ( vs. posterior margin of pectoral-fin spine with long and conspicuous serrations), dorsal-fin spine shorter than pectoral-fin spine ( vs. dorsal-fin spine longer than pectoral-fin spine), and large accessory tooth plates with large and numerous molariform teeth ( vs. small accessory tooth plates with small and few molariform teeth). The nominal species Tachysurus emmelane and Tachysurus equatorialis are considered junior synonyms of C. multiradiatus and a key to species of Cathorops from the Pacific coast of Central and South America is provided.

A new species of Hyphessobrycon (Teleostei: Characiformes: Characidae) from the San Juan River drainage, Pacific versant of Colombia

Zootaxa ◽  
2010 ◽  
Vol 2349 (1) ◽  
pp. 55 ◽  
Author(s):  
CARLOS A. GARCÍA–ALZATE ◽  
CÉSAR ROMÁN–VALENCIA ◽  
DONALD C. TAPHORN
Keyword(s):  
New Species ◽  
Lateral Line ◽  
San Juan ◽  
River Drainage ◽  
Dorsal Fin ◽  
The Pacific ◽  
Fin Rays ◽  
San Juan River ◽  
A New Species ◽  
Pectoral Fin Rays

We describe a new species, Hyphessobrycon sebastiani, from the San Juan River drainage of the Pacific versant of Colombia. This new species of Hyphessobrycon is distinguished from all congeners that share two humeral spots and no caudal blotch by having: five unbranched and 25 to 28 branched anal–fin rays; 12–13 branched pectoral–fin rays; 35–37 scales in the longitudinal series; eight scales between the lateral line and the dorsal–fin origin; 12–13 predorsal scales; 13–18 pored lateral–line scales and three pairs of large bony hooks on anal fin of mature males.

scholarly journals Otocinclus batmani, a new species of hypoptopomatine catfish (Siluriformes: Loricariidae) from Colombia and Peru

2006 ◽  
Vol 4 (4) ◽  
pp. 379-383 ◽  
Author(s):  
Pablo Lehmann A.
Keyword(s):  
New Species ◽  
New Taxon ◽  
Caudal Fin ◽  
Dorsal Midline ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Posterior Extension ◽  
Black Pigmentation ◽  
A New Species ◽  
Ventral Border

A new species of the hypoptopomatine catfish genus Otocinclus is described from two localities in the upper Río Amazonas basin: a tributary of the Río Puré in Colombia and two tributaries to the Río Amazonas near Iquitos in Peru. The new taxon can be easily distinguished from all congeners, except Otocinclus cocama, by having a single, intensely pigmented, vertical W-shaped caudal fin spot and by having three discrete dark bands on dorsum, between the dorsal-fin base and the caudal fin. Otocinclus batmani differs from O. cocama by the absence of vertically elongated blotches from the dorsal midline to the ventral border of flanks, and by lacking a posterior extension of black pigmentation on the base of two central caudal-fin rays. Phylogenetic relationships of the new species are investigated and it is possibly more closely related to a clade formed by O. huaorani, O. mariae, O. bororo, O. mura, and O. cocama.

scholarly journals Hazeus ingressus sp. nov. a new goby species (Perciformes: Gobiidae) and a new invasion in the Mediterranean Sea

2018 ◽  
pp. 316
Author(s):  
SEMIH ENGIN ◽  
HELEN LARSON ◽  
ERHAN IRMAK
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Red Sea ◽  
Undescribed Species ◽  
Gill Rakers ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Goby Species ◽  
The Mediterranean ◽  
A New Species

A new species of gobiid, Hazeus ingressus sp. nov. (Teleostei: Gobiidae) is described from the Levantine coast of Turkey. The species probably originates from the Red Sea and represents the 11th alien gobiid species in the Mediterranean Sea. The new species is distinguished from its Indo-Pacific congeners by a combination of the following characters: no dark blotch on the first dorsal fin; caudal fin coloration; scales in lateral series 25-28 (modally 27); second dorsal fin rays I,8; anal fin rays I,8-9; predorsal scales ctenoid 7; short, stout gill rakers 2+8. This finding suggests that the Lessepsian invasion intensely continues with the inclusion of the known species as well as undescribed species. 

scholarly journals Extreme secondary sexual dimorphism in the genus Florarctus (Heterotardigrada: Halechiniscidae)

2021 ◽  
Vol 51 (3) ◽  
Author(s):  
Piotr Gąsiorek ◽  
David Møbjerg Kristensen ◽  
Reinhardt Møbjerg Kristensen
Keyword(s):  
Sexual Dimorphism ◽  
Pacific Ocean ◽  
Barrier Reef ◽  
Queensland Museum ◽  
The Pacific ◽  
Secondary Sexual Dimorphism ◽  
The Pacific Ocean ◽  
A New Species ◽  
Lines Of Evidence ◽  
Secondary Sexual

AbstractSecondary sexual dimorphism in florarctin tardigrades is a well-known phenomenon. Males are usually smaller than females, and primary clavae are relatively longer in the former. A new species Florarctus bellahelenae, collected from subtidal coralline sand just behind the reef fringe of Long Island, Chesterfield Reefs (Pacific Ocean), exhibits extreme secondary dimorphism. Males have developed primary clavae that are much thicker and three times longer than those present in females. Furthermore, the male primary clavae have an accordion-like outer structure, whereas primary clavae are smooth in females. Other species of Florarctus Delamare-Deboutteville & Renaud-Mornant, 1965 inhabiting the Pacific Ocean were investigated. Males are typically smaller than females, but males of Florarctus heimi Delamare-Deboutteville & Renaud-Mornant, 1965 and females of Florarctus cervinus Renaud-Mornant, 1987 have never been recorded. The Renaud-Mornant collection was re-examined, and type series were analysed. Florarctus heimi and F. cervinus were always found together in the coralline sand of Heron Island (Great Barrier Reef). The animals were kept alive and surveyed in the laboratory of the Queensland Museum. All studied individuals of the larger F. heimi (up to ca. 400 μm) were females, and all adults of the smaller F. cervinus (about 170 μm) were males. Males of F. cervinus were observed mating with females of F. heimi. Following those morphological and behavioural lines of evidence, we propose that F. cervinus is a junior synonym of F. heimi. Based on the discovery of dimorphism in F. bellahelenae sp. nov. and the strong sex-related morphological disparities in F. heimi, we suggest that extreme secondary dimorphism may be present in other florarctin arthrotardigrades.

Gaidropsarus mauli a new species of three-bearded rockling (Gadiformes, Gadidae) from the Lucky Strike hydrothermal vent field (Mid-Atlantic Ridge) and the Biscay Slope (Northeastern Atlantic)

Zootaxa ◽  
2018 ◽  
Vol 4459 (2) ◽  
pp. 301
Author(s):  
MANUEL BISCOITO ◽  
LUIZ SALDANHA
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
Valid Species ◽  
Lucky Strike ◽  
Pectoral Fins ◽  
Dorsal Fin ◽  
Fin Ray ◽  
Mid Atlantic Ridge ◽  
A New Species ◽  
Northeastern Atlantic

Gaidropsarus mauli, new species, is described from the Lucky Strike Hydrothermal vent site (Mid-Atlantic Ridge) and from the Bay of Biscay. It is distinguished from congeners by a combination of characters such as the number of vertebrae, the size of the first dorsal-fin ray, the profile of the head and the shape of the snout, in dorsal view, the size and the position of the eyes, the length of the pelvic fins, the shape of the pectoral fins, and the length of the lateral line. A comparison with the other 13 valid species of the genus is presented. 

Navigobius asayake, a new species of ptereleotrine goby (Gobioidei: Microdesmidae) from Kagoshima, southern Japan

Zootaxa ◽  
2018 ◽  
Vol 4526 (3) ◽  
pp. 373
Author(s):  
MAKOTO OKAMOTO ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Dorsal Fin ◽  
Southern Japan ◽  
Fin Rays ◽  
Eye Diameter ◽  
Yellow Stripe ◽  
Fin Length ◽  
A New Species ◽  
Pectoral Fin Rays ◽  
Pelvic Fin

A new species of ptereleotrine dartfish, Navigobius asayake, is described based on four specimens (45.0–52.1 mm in standard length: SL) collected from off the Satsuma Peninsula and Tanegashima island, Kagoshima, southern Japan. It is distinguished from other congeners by the following combination of characters: second dorsal-fin rays I, 18–19; anal-fin rays I, 19; pectoral-fin rays 21–22; gill rakers 5–6 + 13–15; head length 25.1–26.4% SL; eye diameter 8.6–10.0% SL; pelvic-fin length 15.2–16.1% SL; and a well-developed yellow stripe extending from behind upper part of eye to beneath first dorsal fin. 

scholarly journals Euglossa samperi n. sp., a new species of orchid bee from the Ecuadorian Andes (Hymenoptera: Apidae)

Zootaxa ◽  
2006 ◽  
Vol 1272 (1) ◽  
pp. 61 ◽  
Author(s):  
SANTIAGO RAMÍREZ
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
New Taxon ◽  
Orchid Bees ◽  
Orchid Bee ◽  
The Pacific ◽  
A New Species

A new species of orchid bee in the genus Euglossa is here described. Euglossa samperi n. sp. Ramírez occurs on the Pacific foothills of the Ecuadorian Andes. Based on morphological characters, this new taxon is assigned to the subgenus Glossurella, one of the most species-rich, yet poorly known groups of orchid bees.

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