New species of Chimaera (Chondrichthyes: Holocephali: Chimaeriformes: Chimaeridae) from the Southwestern Indian Ocean

Zootaxa ◽  
2017 ◽  
Vol 4312 (1) ◽  
pp. 1 ◽  
Author(s):  
PAUL J. CLERKIN ◽  
DAVID A. EBERT ◽  
JENNY M. KEMPER
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Large Body ◽  
First Record ◽  
Ventral Surface ◽  
Body Color ◽  
Long Tail ◽  
Dorsal Fin ◽  
Three New Species ◽  
Southwestern Indian Ocean

Three new species of Chimaera are described from the Southwestern Indian Ocean. Chimaera willwatchi sp. nov. is distinguished by its large body, blocky head with square snout, well-defined suborbital ridges, and a strong dorsal spine exceeding first dorsal apex; body brown-purple in color, slight iridescent sheen, heavily mottled around mouth and ventral surface, posterior edge of pelvic fins and first dorsal fin with prominent white margin, and anterior edge of second dorsal fin with white margin. Chimaera didierae sp. nov. can be distinguished by its light tan body color, slender body, short trunk, long tail, relatively robust spine, very small unpaired fins, and extremely deciduous skin. Chimaera buccanigella sp. nov. is distinguished by its light tan body color, stocky body, short trunk, tapering rapidly into a long tail, long, very straight spine, skin not deciduous. The three Chimaera species were collected from seamounts of Walters Shoal, the Madagascar Ridge, and the Southwestern Indian Ridge in an area within 34o30’S–44o05’E and 39o30’S–58o15’E. This is the first record of the genus in the Southwestern Indian Ocean, and brings the global total to 19 species. The new species presented here are distinguishable from their congeners by a combination of coloration, morphology, meristic, and structure of the mitochondrial NADH2 gene. 

scholarly journals Three new species of the fangblenny genus Meiacanthus from Indonesia, with color photographs and comments on other species (Teleostei: Blenniidae: Nemophini)

Zootaxa ◽  
2011 ◽  
Vol 3046 (1) ◽  
pp. 39 ◽  
Author(s):  
William F. SMITH-VANIZ ◽  
GERALD R. ALLEN
Keyword(s):  
New Species ◽  
Undescribed Species ◽  
Body Color ◽  
Caudal Fin ◽  
Black Stripe ◽  
Dorsal Fin ◽  
Yellow Body ◽  
Deep Water Species ◽  
Three New Species ◽  
Water Species

Three new species of fangblennies are described from Indonesia. Meiacanthus abruptus is described based on two specimens, 31.4–36.6 mm SL, from Komodo Island and color photographs of others from Bali. The combination of a white or yellow body color and a single dark mid-lateral stripe that is bluntly rounded at its terminus on the caudal-fin base distinguishes it from other single striped species. This new species closely resembles the allopatric M. vicinus, which has the mid-lateral stripe extending farther onto the caudal fin and tapering to a point. Meiacanthus erdmanni is described from the only known specimen, 35.8 mm SL, photographed and collected in 65–70 m in Cenderawasih Bay, western New Guinea. One of the deepest known species of Meiacanthus, it has two dark mid-lateral stripes and differs from other doublestriped species in having a series of dark blotches on the base of the dorsal fin and only 24 segmented dorsal-fin rays. Meiacanthus cyanopterus, another deep-water species, is described from seven specimens, 19.8–45.3 mm SL, collected in 40–65 m at three sites in Alor Strait. In life this species has a dorsal fin with a blue-violet stripe bordered above by a wide black stripe. An identification key is provided for all the striped species of Meiacanthus, including at least one additional undescribed species previously confused with M. abditus. Color photographs of other Meiacanthus species and some new distributional records are also given.

A new deepwater gurnard of the genus Pterygotrigla (Scorpaeniformes: Triglidae) from the southwestern Indian Ocean

Zootaxa ◽  
2019 ◽  
Vol 4706 (1) ◽  
pp. 189-200
Author(s):  
TAKUJI YATO ◽  
ELAINE HEEMSTRA
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Dorsal Surface ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Fin Rays ◽  
Black Blotch ◽  
Opercular Spine ◽  
A New Species ◽  
Southwestern Indian Ocean

A new species of deepwater gurnard, Pterygotrigla (Otohime) madagascarensis sp. nov. is described, based on two specimens collected on the upper continental slope south of Madagascar, in the southwestern Indian Ocean. The new species belongs to the tropical Indo-Pacific subgenus Otohime in having a short rostral projection, short posttemporal spine, long opercular spine and no cleithral spine. It is most similar to P. (O.) multipunctata, and P. (O.) urashimai, in having no large blotch on the first dorsal fin, a jet-black blotch and no white ocellus on the inner pectoral-fin surface, with no scales on the breast and front of the pectoral-fin base. However, the new species differs from the latter two species by the combination of the following characters: first dorsal-fin spines 7, second dorsal-fin rays 12, dusky rays on the inner pectoral-fin surface, one row of blackish botches on second dorsal fin, and no papillae on the dorsal surface of oral cavity. A key is provided for the twelve Pterygotrigla species now in the subgenus Otohime. 

The identity of Schizothorax griseus Pellegrin, 1931, with descriptions of three new species of schizothoracine fishes (Teleostei: Cyprinidae) from China

Zootaxa ◽  
2009 ◽  
Vol 2006 (1) ◽  
pp. 23-40 ◽  
Author(s):  
JIAN YANG ◽  
XIAOYONG CHEN ◽  
JUNXING YANG
Keyword(s):  
New Species ◽  
Ventral Surface ◽  
Posterior Chamber ◽  
Lower Lip ◽  
Pectoral Fins ◽  
Dorsal Fin ◽  
Black Spots ◽  
Fin Ray ◽  
Eye Diameter ◽  
Three New Species

The identity of Schizothorax griseus Pellegrin, 1931, is clarified and the species redescribed. Three new species previously identified as S. griseus are described: S. nudiventris, from the Lancang Jiang, China; S. heterophysallidos, from the Nanpan Jiang, China; and S. beipanensis, from the upper Beipan Jiang, China. The group comprising Schizothorax griseus, S. nudiventris, S. heterophysallidos and S. beipanensis can be diagnosed from other members of this genus by the absence of an obvious horny sheath on the lower jaw; lower lip developed with three labial lobes in mature individuals; postlabial groove continuous, with a small labial lobe present in the middle of the lower lip; last unbranched dorsal-fin ray strong, its posterior edge with numerous serrae; and scales absent on ventral surface between pectoral fins in adults (except in S. griseus). Schizothorax griseus differs from S. nudiventris, S. heterophysallidos and S. beipanensis by the presence (vs. absence) of concealed scales in the skin on the ventral surface between the pectoral fins in adults; the presence (vs. absence) of a shallow ethmoidal groove before the nostrils; and having barbels much longer than eye diameter (eye diameter 33.4–93.7 % (vs. 57.2–160.0) of maxillary-barbel length). Schizothorax nudiventris is distinguished from S. heterophysallidos and S. beipanensis in having only the proximal ¾ (vs. entirety) of the last unbranched dorsal-fin ray strong; pelvic-fin origin opposite or posterior (vs. opposite or anterior) to vertical through dorsal-fin origin; and irregular black spots present (vs. absent) on side of body. Schizothorax heterophysallidos is distinguished from S. griseus, S. nudiventris and S. beipanensis in having a larger posterior chamber of the air bladder (vs. posterior chamber as large as, or slightly larger than, anterior one), length of posterior chamber 3–6 (vs. 2) times length of anterior chamber. Schizothorax beipanensis is distinguished from S. griseus by the absence (vs. presence) of scales on the thorax in mature individuals; absence (vs. presence) of black spots on side of body; and having the maxillary barbel 58.5–120.1 % SL (vs. 33.4–93.7 % SL).

Rhinobatos austini n. sp., a new species of guitarfish (Rhinopristiformes: Rhinobatidae) from the Southwestern Indian Ocean

Zootaxa ◽  
2017 ◽  
Vol 4276 (2) ◽  
pp. 204 ◽  
Author(s):  
DAVID A. EBERT ◽  
OFER GON
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Depth Distribution ◽  
Dorsal Surface ◽  
Ventral Surface ◽  
Colour Pattern ◽  
Coastal Species ◽  
Kwazulu Natal ◽  
A New Species ◽  
Southwestern Indian Ocean

Rhinobatos austini sp. n. is described from the southwestern Indian Ocean based on four specimens collected from the KwaZulu-Natal Province, South Africa and from Mozambique. The new species, with one exception, can be distinguished from all other members of this genus by a prominent teardrop-shaped dark blotch on the ventral surface of its snout. Its closest congener, R. holcorhynchus, also has a prominent teardrop-shaped blotch on its snout, but the new species differs from it by a lack of prominent thorns and tubercles on it dorsal disc surface and a very striking dorsal surface colour pattern of paired spots, some forming darker transverse bands across its back. Geographically, these two species broadly overlap, but R. austini appears to be a shallow, more coastal species (<1–107 m) compared to R. holcorhynchus that has a mostly offshore (75–254 m) depth distribution. 

Taxonomic review of the genus Argyrops (Perciformes; Sparidae) with three new species from the Indo-West Pacific

Zootaxa ◽  
2018 ◽  
Vol 4438 (3) ◽  
pp. 401 ◽  
Author(s):  
YUKIO IWATSUKI ◽  
PHILLIP C. HEEMSTRA
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Valid Species ◽  
Nominal Species ◽  
Geographic Variations ◽  
West Pacific ◽  
Dorsal Fin ◽  
The Indian Ocean ◽  
Three New Species ◽  
Fin Spines

The Indo-West Pacific sparid genus Argyrops is reviewed, with four valid species and three new species: A. bleekeri Oshi-ma, 1927, A. filamentosus (Valenciennes, 1830), A. megalommatus (Klunzinger, 1870), A. spinifer (Forsskål, 1775), A. caeruleops n. sp., A. flavops n. sp. and A. notialis n. sp. The above seven species can be differentiated on meristic values, ontogenetic and morphological characters, and coloration. Argyrops bleekeri from the western Pacific and A. notialis n. sp. from Western Australia both have only one rudimentary dorsal-fin spine on the first dorsal pterygiophore (which defines the Argyrops bleekeri complex), while the five other congeners have two rudimentary dorsal-fin spines, both associated with the first dorsal pterygiophore. Argyrops filamentosus, A. megalommatus, and A. caeruleops n. sp. have the 3rd dorsal-fin spine filamentous and longest, the defining character of the A. filamentosus complex. Argyrops spinifer (from the Indian Ocean) and A. flavops n. sp. (from the Middle East to Pakistan, but not the Red Sea and probably rare in the Persian Gulf) differ from other complexes in having 4–6 elongated or filamentous dorsal-fin spines (usually 3rd–6th [four spines] or 3rd–8th [six spines]) in juveniles and subadults, with the first 2 dorsal-fin spines rudimentary, the characteristic of the A. spinifer complex. The above three complexes include the seven Argyrops species that are defined and supported by morphological and color differences, genetic distinctions (partial cytochrome b genes, 1,116 bp), and distribution. The nominal species are discussed, together with several geographic variations of A. spinifer from the Indian Ocean, and a key to the species is provided. 

The congrid eel genus Bathycongrus of Taiwan, with descriptions of three new species (Anguilliformes: Congridae)

Zootaxa ◽  
2018 ◽  
Vol 4454 (1) ◽  
pp. 118
Author(s):  
DAVID G. SMITH ◽  
HSUAN-CHING HO
Keyword(s):  
New Species ◽  
Rare Species ◽  
Body Color ◽  
Small Species ◽  
Dorsal Fin ◽  
Three New Species

Ten species of the congrid eel genus Bathycongrus are recognized from Taiwanese waters. Diagnoses and full descriptions of eight species are provided in present work. Three species are described as new. Bathycongrus bimaculatus sp. nov. is a small species with a pale body color, two black patches on dorsal fin, and 109–111 total vertebrae. Bathycongrus graciliceps sp. nov. is a moderately elongate species with a small, slender head and long trunk, and 163 total vertebrae. Bathycongrus castlei sp. nov. is a slender species with a relatively short trunk, dorsal half of body deep brownish, and 160–162 total vertebrae. Two rare species, B. bleekeri Fowler, 1934 and B. macroporis (Kotthaus, 1968), are newly reported from Taiwan. A key to all species in Taiwan is provided.

A new species of the genus Isoperla (Plecoptera: Perlodidae) from TIANMU MOUNTAIN NATURE RESERVE, China

Zootaxa ◽  
2018 ◽  
Vol 4504 (2) ◽  
pp. 276
Author(s):  
QING-BO HUO ◽  
YU-ZHOU DU
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
First Record ◽  
Ventral Surface ◽  
Zhejiang Province ◽  
The Family ◽  
A New Species ◽  
Coastal China

A species of the genus Isoperla Banks, 1906, I. oncocauda Huo & Du, sp. nov. is described as new to science and is the first record for the family Perlodidae from the Tianmu Mountain Nature Reserve, Zhejiang Province of eastern coastal China. Both sexes of the new species are characterized by tergum 10 with a developed process. The partially extruded aedeagus of the male is membranous without conspicuous larger sclerites and with the ventral surface covered with dense scale-like and nail-shaped spines. 

scholarly journals Three new species of the genus Stephos Scott, 1892 (Crustacea, Copepoda, Calanoida, Stephidae) from Jeju Island, Korea

ZooKeys ◽  
2020 ◽  
Vol 944 ◽  
pp. 1-30
Author(s):  
Seong Yong Moon ◽  
Ho Young Soh ◽  
Dae Hyun Cho
Keyword(s):  
New Species ◽  
Body Length ◽  
Ventral Surface ◽  
Jeju Island ◽  
Shallow Waters ◽  
Terminal Complex ◽  
Field Surveys ◽  
General Field ◽  
Three New Species ◽  
Female Genital

During general field surveys carried out recently to collect benthopelagic copepods from near the substrate of the shallow waters off Jeju Island, Korea, a few specimens of three new species of Stephos Scott, 1892, were collected. The new species are placed in the genus Stephos because of the following combination of features: absence of seta on the basal exite of maxillule, and male right leg 5 ending in an unarmed claw-like and/or mitten-like segment. Stephos jejuensissp. nov. can be distinguished from its congeners by body length 0.92 mm, left side of the female genital double-somite with protruding lobes, antennule that extends beyond the distal area of the genital double-somite, and the male leg 5 terminal complex. Stephos concavussp. nov. can be distinguished from its congeners by the genital double-somite with protruding lobes on both sides, and the presence of larger spinules on the distomedial margin of leg 5. Stephos fortipessp. nov. can be distinguished from its congeners by its longer body length, 1.12 mm long in the female, antennules that extend to the end of the genital double-somite, and the presence of a covered row of minute spinules on the ventral surface of the genital operculum in the female. Until now, 35 species of stephids were known worldwide.

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