Naso mcdadei, a new species of unicornfish (Perciformes : Acanthuridae), with a review of the Naso tuberosus species complex

2002 ◽  
Vol 50 (3) ◽  
pp. 293 ◽  
Author(s):  
J. W. Johnson
Keyword(s):  
South Africa ◽  
New Species ◽  
Indian Ocean ◽  
Species Complex ◽  
Western Indian Ocean ◽  
Body Depth ◽  
Southern Taiwan ◽  
Chagos Archipelago ◽  
The Western Pacific ◽  
A New Species

An immaculate square-nosed acanthurid fish of the genus Naso, previously misidentified as N. tuberosus, is described as a new species, N. mcdadei. The species is widespread, but appears uncommon, being known from only 10 specimens and five underwater photographs. It is described from specimens from tropical eastern and western Australia, southern Indonesia, Mauritius, and Natal, South Africa. Its occurrence is confirmed from off western Sumatra, the Maldives, Chagos Archipelago and southern Taiwan by photographs. It differs from N. tuberosus (Lacèpede, 1801) and N. tonganus (Valenciennes, 1835) most notably through smaller, more numerous teeth and a generally uniform greyish colouration. The head, body and fins all lack numerous small dark spots that are variously present in the latter two species. In adults, it also differs through a squarish rather than rounded tuberosity on the snout, a shorter straighter nasal groove, lack of a discernible hump in the dorsal profile, smaller-scale tubercles, non-prominent jaws, and first rather than last dorsal spine longest.The species previously recognised as N. tuberosus is split into two closely related taxa, N. tonganus (Valenciennes) from the western Pacific and Indian Oceans and N. tuberosus Lac�pede from the central and western Indian Ocean. These species differ mainly in the size and shape of the nasal tuberosity, dorsal profile, body depth, and colouration.

scholarly journals A new species of Tortanus (Atortus) (Copepoda: Calanoida: Tortanidae) from Rodrigues Island, Mauritius

2003 ◽  
Vol 83 (2) ◽  
pp. 355-360 ◽  
Author(s):  
Susumu Ohtsuka ◽  
David V.P. Conway
Keyword(s):  
South Africa ◽  
New Species ◽  
Indian Ocean ◽  
Species Complex ◽  
Arabian Gulf ◽  
Coastal Region ◽  
Western Indian Ocean ◽  
Species Group ◽  
Faunal Element ◽  
A New Species

A new species of the copepod genus Tortanus (Atortus) (Copepoda: Calanoida), T. (A.) insularis, is described from the coastal region of Rodrigues Island, Mauritius, an isolated island in the south-western Indian Ocean. This new species can be assigned to an Indian faunal element, the recticauda species group, in the Indo-West Pacific recticauda species complex. It exhibits the closest relationship to T. (A.) recticauda recorded from the southern Red Sea and Arabian Gulf, rather than the closer distributed T. (A.) capensis, recorded from off South Africa.

Callogobius winterbottomi, a new species of goby (Teleostei: Gobiidae) from the Western Indian Ocean

Zootaxa ◽  
2013 ◽  
Vol 3630 (1) ◽  
pp. 155-164 ◽  
Author(s):  
NAOMI R. DELVENTHAL ◽  
RANDALL D. MOOI
Keyword(s):  
South Africa ◽  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
Caudal Peduncle ◽  
Additional Specimen ◽  
Group A ◽  
Urogenital Papilla ◽  
A New Species

Callogobius winterbottomi new species is described from the 33.8 mm SL holotype and two paratypes (32.2 mm SL and 22.9 mm SL) from the Comoros, Western Indian Ocean. It is distinguished from all other known Callogobius species by the following combination of characters: sensory pores absent, 23–26 scales in lateral series, and sensory papillae pre-opercular row not continuous with transverse opercular row. One additional specimen of Callogobius winterbottomi was located from South Africa. A new standardized naming system for Callogobius sensory papillae rows is presented for identification and clarification of character states among Callogobius species. The new species is tentatively placed among what we term the “sclateri group”, a clade including C. sclateri (Steindachner) and three other species that exhibit a modified female urogenital papilla with lateral distal flaps and elongate ctenii on the caudal peduncle scales. Callogobius tutuilae (Jordan & Seale) is removed from synonymy with C. sclateri because it has partially united pelvic fins (vs separate) and the preopercular sensory papillae row is continuous with the transverse opercular row (vs separate).

A review of the gobiid fish genus Trimma from the Chagos Archipelago, central Indian Ocean, with the description of seven new species

1984 ◽  
Vol 62 (4) ◽  
pp. 695-715 ◽  
Author(s):  
Richard Winterbottom
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
Western Pacific ◽  
Valid Species ◽  
Gobiid Fish ◽  
Central Indian Ocean ◽  
The Pacific ◽  
Chagos Archipelago ◽  
The Western Pacific

The genus Trimma contains 17 nominal and 13 valid species. Five of these are here reported from the Chagos Archipelago: T. eviotops, T. macrophthalma, T. mendelssohni. T. nauclei, and T. taylori. An additional 7 species arc described as new and another is described but not named, for a total of 13 species known from these islands. The biogeographic affinities of Chagos species of Trimma appear to lie with the western Indian Ocean rather than the western Pacific, but the evidence is weak because of the lack of knowledge of the Pacific Trimma fauna.

scholarly journals The species of Moloha Barnard, 1946, from the western Indian Ocean, with the description of a new species from India (Crustacea: Brachyura: Homolidae)

2015 ◽  
Author(s):  
Peter K.L. Ng ◽  
Appukuttannair Biju Kumar
Keyword(s):  
South Africa ◽  
New Species ◽  
Indian Ocean ◽  
Deep Water ◽  
Western Indian Ocean ◽  
Southern India ◽  
First Time ◽  
A New Species

The taxonomy of the deep-water homolid crabs Moloha grandperrini Guinot & Richer de Forges, 1995 and M. alisae Guinot & Richer de Forges, 1995 is re-examined, and the types redescribed and figured. Moloha alisae is reported from South Africa for the first time. A new species with an inflated carapace, M. tumida sp. nov., is also described from southern India and compared with its closest congeners.

scholarly journals Prognathodes geminus, a new species of butterflyfish (Teleostei, Chaetodontidae) from Palau

ZooKeys ◽  
2019 ◽  
Vol 835 ◽  
pp. 125-137 ◽  
Author(s):  
Joshua M. Copus ◽  
Richard L. Pyle ◽  
Brian D. Greene ◽  
John E. Randall
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Genetic Divergence ◽  
Western Indian Ocean ◽  
Color Pattern ◽  
Body Width ◽  
Body Depth ◽  
Dorsal Fin ◽  
Fin Rays ◽  
A New Species

A new species of the butterflyfish genus Prognathodes (Chaetodontidae) is described from two specimens collected at a depth of 116 m off Ngemelis Island, Palau. Prognathodesgeminussp. n. is similar to P.basabei Pyle & Kosaki, 2016 from the Hawaiian archipelago, and P.guezei (Maugé & Bauchot, 1976) from the western Indian Ocean, but differs from these species in the number of soft dorsal-fin rays, size of head, body width, and body depth. There are also subtle differences in life color, and substantial differences in the mtDNA cytochrome oxidase I sequence (d ≈ 0.08). Although genetic comparisons with P.guezei are unavailable, it is expected that the genetic divergence between P.guezei and P.geminus will be even greater than that between P.geminus and P.basabei. It is named for the strikingly similar color pattern it shares with P.basabei.

On the identities of Pinnotheres villosissimus Doflein, 1904, P. dofleini Lenz, in Lenz & Strunck, 1914, and P. pilumnoides Nobili, 1906 (Decapoda, Brachyura, Pinnotheridae) from the western Indian Ocean

Crustaceana ◽  
2018 ◽  
Vol 91 (5) ◽  
pp. 611-633 ◽  
Author(s):  
Peter K. L. Ng
Keyword(s):  
South Africa ◽  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
The Third ◽  
A New Species

Abstract Doflein (1904) accidentally transposed the figures for the third maxillipeds of two species of pinnotherid crabs he described, a mistake which has taxonomic consequences. The species he described, Pinnotheres villosissimus Doflein, 1904, from Sumatra, is here referred to its own genus, Trichobezoares n. gen. The specimen Doflein identified as “Pinnotheres sp.” from South Africa was referred to a new species, Pinnotheres dofleini by Lenz (in Lenz & Strunck, 1914) partly based on Doflein’s (1904) incorrect figure of the third maxilliped. To stabilize the taxonomy of this species, Doflein’s specimen is selected as the lectotype; fixing the species as a member of Afropinnotheres Manning, 1993. Pinnotheres pilumnoides Nobili, 1906 (Djibouti) was differentiated from the taxon T. villosissimus partially on differences in the third maxilliped. It is redescribed, figured and shown to be a second species of Trichobezoares. The correct authorship for the species established in Lenz & Strunck (1914) is also discussed.

scholarly journals A new species of Tortanus (Atortus) (Copepoda: Calanoida: Tortanidae) from the Seychelles, Mauritius and Madagascar

2005 ◽  
Vol 85 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Susumu Ohtsuka ◽  
David V.P. Conway
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Species Complex ◽  
Western Indian Ocean ◽  
Species Group ◽  
Planktonic Copepod ◽  
Number Of Species ◽  
The Indian Ocean ◽  
A New Species ◽  
High Diversity

A new species of the planktonic copepod Tortanus (Atortus) (Calanoida: Tortanidae), T. (A.) magnonyx is described from the Seychelles, Mauritius and Madagascar. This is the sixth species of the Indian Ocean recticauda species group, of the Indo-West Pacific recticauda species complex, that has been described from the western Indian Ocean. The inshore areas where these copepods are found have been poorly surveyed, so the number of species found implies a high diversity.

Patterns of morphological and genetic variation in western Indian Ocean members of the Chaerephon 'pumilus' complex (Chiroptera: Molossidae), with the description of a new species from Madagascar

Zootaxa ◽  
2010 ◽  
Vol 2551 (1) ◽  
pp. 1 ◽  
Author(s):  
STEVEN M. GOODMAN ◽  
WAHEEDA BUCCAS ◽  
THESHNIE NAIDOO ◽  
FANJA RATRIMOMANARIVO ◽  
PETER J. TAYLOR ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Indian Ocean ◽  
Species Complex ◽  
Arabian Peninsula ◽  
Molecular Genetic ◽  
Western Indian Ocean ◽  
D Loop ◽  
Indian Ocean Island ◽  
The Individual ◽  
A New Species

The species delimitations of African, Arabian Peninsula, and western Indian Ocean island members of the Molossidae bat species complex Chaerephon pumilus remain largely unresolved. Based on genetic analyses this group is paraphyletic, with C. leucogaster nested within C. pumilus sensu lato, and the latter is composed of several distinct clades. DNA was isolated from a specimen of C. p. pumilus obtained at the type locality (Massawa, Eritrea). Although incomplete, this sequence allowed us to clearly define which clade is referable to nominate pumilus, a critical step in resolving the systematics of this species complex. Using morphological and molecular genetic (cytochrome b and D-loop sequences) characters, we establish that C. leucogaster and C. 'pumilus' on Madagascar represent two different lineages and that the Malagasy population referred to C. 'pumilus' is specifically distinct from those on Africa, the islands and mainland Africa. The population of C. pusillus from the western Seychelles atoll of Aldabra cluster with that of the Comoros, rather than Madagascar. For numerous other species of volant vertebrates (bats and birds), the origin of the Aldabra fauna is mixed between the Comoros and Madagascar (e.g., Goodman & Ranivo 2008; O'Brien et al. 2009; Pasquet et al. 2007; Warren et al. 2003). Hence, in the case of these 9-17 g Chaerephon bats, these water barriers have been associated with the isolation and subsequent differentiation of populations after successful dispersal and colonization events. In contrast, within the Comoros, there is no apparent genetic structure between with the individual islands, which are separated by 40 and 80 km, indicating that this distance is regularly traversed by these bats and giving rise to intra-archipelago panmixia of populations.

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