scholarly journals A New Species of Ophioglossolambis Dekkers, 2012 from the Mascarene Islands (Mollusca: Gastropoda: Strombidae)

The Festivus ◽  
2021 ◽  
Vol 53 (3) ◽  
pp. 182-191
Author(s):  
David Lum
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
East Africa ◽  
Coastal Waters ◽  
Western Indian Ocean ◽  
Mascarene Islands ◽  
A New Species

This paper describes a new species of Ophioglossolambis Dekkers, 2012 from the Mascarene Islands (Mauritius, Rodrigues, and Réunion) and Saint Brandon (also known as Cargados Carajos) Shoals in the western Indian Ocean as Ophioglossolambis itsumiae. It is separated from Ophioglossolambis digitata (Perry, 1811), its closest congener from the coastal waters of Madagascar and East Africa, by its typically larger and broader build, longer spines, lighter coloration, a more flared labral flange, and, most especially, very compact and short spire.

A new species of Secutor (Teleostei: Leiognathidae) from the Western Indian Ocean

Zootaxa ◽  
2011 ◽  
Vol 2998 (1) ◽  
pp. 39 ◽  
Author(s):  
ZACHARY H. BALDWIN ◽  
JOHN S. SPARKS
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Coastal Waters ◽  
Western Indian Ocean ◽  
Pectoral Fin ◽  
Pigmentation Pattern ◽  
Shaped Body ◽  
Dorsal Fin ◽  
A New Species

A new species of ponyfish, Secutor mazavasaoka, is described from coastal waters of the Western Indian Ocean. Together, the new species, S. indicius, and S. insidiator are readily distinguished from congeners by more or less oval-shaped elongate bodies (vs. markedly deep and disk-shaped). The new species is distinguished from S. hanedai by the presence of scales on the chest (vs. chest asquamate), and from S. indicius and S. insidiator by a deeper, hatchet-shaped body (vs. uniformly oval) and pigmentation pattern on the dorsal flank comprising eight to eleven well-defined columns of irregular small spots and blotches (vs. 14 to 17 thin columns of spots or vertical lines in S. indicius, or larger irregular blotches arrayed in poorly defined columns in S. insidiator). Additionally, the new species is distinguished from S. insidiator by a strongly upturned mouth and compressed pug-like snout, a pronounced concavity dorsal to the orbit, a dorsally-projecting nuchal spine, and dorsal-fin insertion well posterior to vertical through pectoral-fin base (vs. at about level of pectoral-fin base in S. insidiator).

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 new species of Nemipterus (Pisces: Nemipteridae) from the Western Indian Ocean

Zootaxa ◽  
2013 ◽  
Vol 3630 (1) ◽  
pp. 191-197
Author(s):  
BARRY C. RUSSELL ◽  
DENIS TWEDDLE
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Narrow Band ◽  
Western Indian Ocean ◽  
Colour Pattern ◽  
Upper Lip ◽  
Lower Margin ◽  
Lower Lip ◽  
Posterior Nostril ◽  
A New Species

A new species of threadfin bream, Nemipterus flavomandibularis, from the Western Indian Ocean is described and figured. The new species appears most closely related to N. bipunctatus (Valenciennes), but differs principally in colour pattern: N. flavomandibularis is distinct from N. bipunctatus in having two yellow bands on the snout, the upper lip narrowly edged with yellow; and lower lip and chin beneath lip yellow, this colour extending as a narrow band posteriorly to lower margin of opercle. Also, in N. flavomandibularus the scale rows below the lateral line are more or less horizontal (versus distinctly ascending anteriorly in N. bipunctatus), and the maxillary reaches to between level of posterior nostril and anterior margin of eye (versus reaching to below the anterior half of the eye in N. bipunctatus).

Opistognathus pardus, a new species of jawfish (Teleostei: Opistognathidae) from the Western Indian Ocean

Zootaxa ◽  
2012 ◽  
Vol 3523 (1) ◽  
pp. 20
Author(s):  
WILLIAM F. SMITH-VANIZ ◽  
K. K. BINEESH ◽  
K. V. AKHILESH
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Western Indian Ocean ◽  
Color Pattern ◽  
Single Specimen ◽  
Unique Color ◽  
Fin Ray ◽  
Fourth Species ◽  
A New Species ◽  
Pelvic Fin

A new species of jawfish, Opistognathus pardus, is described based on a single specimen, 98.8 mm SL, recently collectedfrom the Western Indian Ocean off Quilon (Kerala), India. The combination of a rigid maxilla without flexible lamina pos-teriorly, a unique color pattern in which most of the head is covered with small, irregular-shaped, dark spots, dorsal-finrays XI, 11, and the outermost segmented pelvic-fin ray tightly bound to adjacent ray, with the interradial membrane notincised distally distinguishes the new species from other congeners. This is the fourth species of Opistognathus known from the coast of India or Sri Lanka. A range extension for O. macrolepis is also reported.

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