New species and records of the genus Syllis Savigny in Lamarck, 1818 (Annelida: Syllidae) from Socotra Archipelago (Indian Ocean)

Zootaxa ◽  
2020 ◽  
Vol 4742 (1) ◽  
pp. 73-88
Author(s):  
YOLANDA LUCAS RODRÍGUEZ ◽  
GUILLERMO SAN MARTÍN ◽  
DIETER FIEGE
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Valid Species ◽  
New Findings ◽  
The Indian Ocean ◽  
Socotra Archipelago ◽  
San Martín ◽  
A New Species

Based on a census of the polychaete fauna of the Socotra Archipelago in the Indian Ocean we report here new findings on the genus Syllis Savigny in Lamarck, 1818. These ten species are newly recorded from this area: Syllis alternata Moore, 1908; Syllis bouvieri Gravier, 1900; Syllis broomensis (Hartmann-Schröder, 1979); Syllis compacta Gravier, 1900; Syllis crassicirrata (Treadwell, 1925); Syllis gerlachi (Hartmann-Schröder, 1960); Syllis hyalina Grube, 1863; Syllis lutea (Hartmann-Schröder, 1960); Syllis schulzi (Hartmann-Schröder, 1960); Syllis ypsiloides Aguado, San Martín & Ten Hove, 2008. Additionally, Syllis qamhiyn sp. nov. is described as a new species, characterized by its conspicuously thick and short dorsal cirri filled with a gelatinous substance and reduced number of compound chaetae from medium to posterior parapodia, with enlarged shafts and short blades which become almost unidentate and do not fuse with shafts. Following an examination of the holotype of S. bouvieri, its status as a valid species and not as synonym of Syllis prolifera Krohn, 1852, as considered by some authors (see Licher 1999) is confirmed, and a redescription is included. 

A new species and nine new records of Syllidae (Annelida) from the Socotra Archipelago (Indian Ocean)

Zootaxa ◽  
2019 ◽  
Vol 4651 (2) ◽  
pp. 235-258
Author(s):  
YOLANDA LUCAS RODRÍGUEZ ◽  
GUILLERMO SAN MARTÍN ◽  
DIETER FIEGE
Keyword(s):  
Indian Ocean ◽  
New Records ◽  
Original Description ◽  
Gulf Of Aden ◽  
The Indian Ocean ◽  
Socotra Archipelago ◽  
A Chain ◽  
San Martín ◽  
A New Species ◽  
Insight Into

In this paper, we report 10 species of Syllidae, collected in the Socotra Archipelago (Indian Ocean). They belong to eight different genera in four subfamilies namely, Syllinae: Haplosyllis Langerhans, 1879, Megasyllis San Martín, Hutchings & Aguado, 2008, Opisthosyllis Langerhans, 1879, Trypanosyllis Claparède, 1864; Eusyllinae: Eusyllis Malmgren, 1867, Odontosyllis Claparède, 1863; Exogoninae: Salvatoria McIntosh, 1885; and Autolytinae: Myrianida Milne Edwards, 1845. Trypanosyllis mercedesae n. sp., is here formally described and distinguished from congeners. Trypanosyllis richardi Gravier, 1900 is re-described, adding important taxonomic information to the original description, based on specimens collected from Djibouti (Gulf of Aden). We provide new insight into the reproduction of Megasyllis heterosetosa (Hartmann-Schröder, 1991) with the description of a specimen with an attached female dicerous stolon, full of oocytes. Odontosyllis polycera (Schmarda, 1861) is described because it is newly recorded for the Indian Ocean. We also provide some remarks about Myrianida pachycera (Augener, 1913), collected with a chain of stolons. 

scholarly journals Dacar Cas/Somali Red Aloe: a new species of Aloe (Asphodelaceae) from Somaliland

PhytoKeys ◽  
2019 ◽  
Vol 117 ◽  
pp. 85-97
Author(s):  
Mary E. Barkworth ◽  
Ahmed Ibrahim Awale ◽  
Faisal Jama Gelle
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Plant Diversity ◽  
Species Density ◽  
Number Of Species ◽  
The Indian Ocean ◽  
Eastern Highlands ◽  
A New Species

A new species of Aloe (Asphodelaceae) is described from Somaliland. It differs from other species in forming large clumps and in having sap that is initially yellow but quickly turns bright red and then dark red or reddish-brown, paniculate red-flowered inflorescences and uniformly coloured leaves with red teeth. Its recognition raises the number of species known from the combined area of Somaliland and Somalia s.s. from 31 to 36. A map portraying species density of Aloe by country, as that genus is now interpreted, shows that Aloe has its highest density on islands in the Indian Ocean but that, within Africa, the greatest density is in countries along the eastern highlands. The data also reinforce the importance of field botanists in determining a country’s known plant diversity.

scholarly journals A new species of the genus Smacigastes Ivanenko & Defaye, 2004 (Tegastidae, Harpacticoida, Copepoda) from the Onnuri Vent Field in the Indian Ocean

2020 ◽  
Vol 96 (2) ◽  
pp. 699-714
Author(s):  
Jong Guk Kim ◽  
Jimin Lee
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
First Record ◽  
Cold Seeps ◽  
Dichotomous Key ◽  
The Family ◽  
The Indian Ocean ◽  
A New Species

The genus Smacigastes Ivanenko & Defaye, 2004 (Harpacticoida, Copepoda) is the most primitive genus in the family Tegastidae Sars, 1904, occurring in deep-sea chemosynthetic environments, such as hydrothermal vents, cold seeps, whale falls and wood falls. Our exploration of the Onnuri Vent Field, the sixth active hydrothermal vent system in the Central Indian Ridge, resulted in the discovery of a new species in the genus Smacigastes. A detailed morphological analysis of S. pumilasp. nov. reveals that it most resembles S. barti Gollner, Ivanenko & Martínez Arbizu, 2008, described from a hydrothermal vent in the East Pacific Ridge; the new species can be distinguished from the existing species by the 8-segmented female antennule, the absence of an abexopodal seta on the antennary basis, the mandibular exopod represented by a single seta and the exopod of the first leg with five setae. This is the first record of Smacigastes in the Indian Ocean. A dichotomous key to species of the genus Smacigastes worldwide is provided.

scholarly journals The genus Chaerilus Simon, 1877 (Scorpiones, Chaerilidae) in the Indian Ocean Islands and description of a new species

Euscorpius ◽  
2011 ◽  
Vol 2011 (110) ◽  
pp. 1-8
Author(s):  
Wilson R. Lourenço ◽  
◽  
Bernard Duhem ◽  
Elise-Anne Leguin ◽  
◽  
...  
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
The Indian Ocean ◽  
A New Species ◽  
Ocean Islands

A new thermosbaenacean of the genus Tethysbaena (Peracarida, Thermosbaenacea, Monodellidae) from Socotra Island, Yemen

Crustaceana ◽  
2021 ◽  
Vol 94 (4) ◽  
pp. 487-506
Author(s):  
H. P. Wagner ◽  
K. Van Damme
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Species Group ◽  
Isolated Populations ◽  
Dry Land ◽  
Tethys Sea ◽  
Socotra Island ◽  
Indian Ocean Island ◽  
Socotra Archipelago ◽  
A New Species

Abstract A new species of the thermosbaenacean genus Tethysbaena Wagner, 1994 (Crustacea: Peracarida: Thermosbaenacea) is described based on females from a freshwater cave lake and a brackish coastal well on Socotra Island (Yemen) as Tethysbaena dioscorida n. sp. It is the first representative of the Thermosbaenacea that is described from the Socotra Archipelago and the first member of the order known from an Indian Ocean island. The new species is the eighth known member of what is considered the “Tethysbaena relicta” species-group, which is known from Oman (four species), Somalia (one species), Israel (two species) and now Socotra Island (one species). The new species shows closest morphological affinities with T. barbatula Wagner, 2020 from Oman. We suggest that the speciation in this well-defined species-group is due to regressions of the Tethys Sea and the appearance of dry land since the Oligocene-Miocene boundary to the present time, forming major barriers and creating isolated populations of the ancestral species. Also the potential biocrisis in Socotra as a result of developmental activities during the last decades is mentioned, which may affect the subterranean faunas in particular in coastal areas, exemplified by the destruction of one of only two localities where the new species was found.

XVI.—On a New Species of Cactogorgia

1910 ◽  
Vol 30 ◽  
pp. 324-326
Author(s):  
Jas. J. Simpson
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Separate Species ◽  
The Indian Ocean ◽  
A New Species

Amongst the unnamed Alcyonaria in the collection of the Royal Scottish Museum, Edinburgh, is a beautiful colony belonging to the genus Cactogorgia, which Mr Eagle Clarke has kindly handed me for identification and description.In 1907 (Trans. Roy. Soc. Edin.) I established the genus Cactogorgia for several small colonies from the Indian Ocean, and referred these to three separate species, viz. celosioides, alciformis, and expansa. Thomson and M'Kinnon, in Trans. Linn. Soc. (Zool.), 1909, have described another species from the Seychelles under the name of Cactogorgia lampas, and the present colony must also be referred to a new species. This we propose to name Cactogorgia agariciformis, n. sp., on account of its very definite mushroom-shape.

A new species of Axinyssa Lendenfeld, 1897 (Porifera, Demospongiae, Halichondrida) from the Senegalese coast

Zootaxa ◽  
2002 ◽  
Vol 117 (1) ◽  
pp. 1 ◽  
Author(s):  
NICOLE BOURY-ESNAULT ◽  
CHRISTIAN MARSCHAL ◽  
JEAN-MICHEL KORNPROBST ◽  
GILLES BARNATHAN
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Type Species ◽  
The Indian Ocean ◽  
Mangrove Roots ◽  
A New Species

Axinyssa djiferi, a new species of Axinyssa Lendenfeld, 1897 (Porifera, Demospongiae, Halichondrida) is described from the mangrove roots along the Senegalese coast. This species is close to the type species of the genus Axinyssa topsenti Lendenfeld, 1897 described from the Indian Ocean. Both share two categories of oxea, presence of fistules with apical oscules, conules in which the choanosomal tracts end in brushes and tangential skeleton between the conules. They differ in the size of the oxea, the shape of the smaller oxeas, the type of spicule in the ectosomal tangential skeleton, and in their respective geographical distributions. The description of this new species gives grounds for reassessing the synonymy between Axinyssa and Pseudaxinyssa Burton, 1931.

First record of Hyalascus (Hexactinellida: Rossellidae) from the Indian Ocean, with description of a new species from a volcanic seamount in the Andaman Sea

Zootaxa ◽  
2010 ◽  
Vol 2667 (1) ◽  
pp. 64 ◽  
Author(s):  
SABYASACHI SAUTYA ◽  
KONSTANTIN R. TABACHNICK ◽  
BABAN INGOLE
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Indian Ocean ◽  
First Record ◽  
Andaman Sea ◽  
The Pacific ◽  
The Indian Ocean ◽  
The Pacific Ocean ◽  
Back Arc ◽  
A New Species

A new species of Hyalascus is described from the submarine volcanic crater seamount of Andaman Back-arc Basin, Indian Ocean. The genus was previously known in the Pacific Ocean only.

A new species of Nyleta Dodd (Hymenoptera: Scelionidae) from Southeast Asia

2016 ◽  
Vol 4 (18) ◽  
pp. 1
Author(s):  
Veenakumari Kamalanathan ◽  
Prashanth Mohanraj
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Southeast Asia ◽  
Type Species ◽  
Tamil Nadu ◽  
Monotypic Genus ◽  
Remote Island ◽  
The Indian Ocean ◽  
First Time ◽  
A New Species

The monotypic genus Nyleta was described by Dodd from Australia in 1926, with Nyleta striaticeps Dodd as the type species. A new species of Nyleta is now described and imaged from the remote island of Little Andaman in the Andaman and Nicobar group of Islands in the Indian Ocean. Variants of the same species were also collected from Tamil Nadu. The images of the holotype of N. striaticeps are also provided for the first time.

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