Two new sympatric Knipowitschia species (Teleostei: Gobiidae) from an eastern Mediterranean coastal lake—examples of different dispersal patterns?

Zootaxa ◽  
2011 ◽  
Vol 3114 (1) ◽  
pp. 22 ◽  
Author(s):  
HARALD AHNELT
Keyword(s):  
New Species ◽  
Mediterranean Region ◽  
Eastern Mediterranean ◽  
Canal System ◽  
Coastal Lake ◽  
Dispersal Patterns ◽  
The West ◽  
Brackish Lake ◽  
Caudal Peduncle ◽  
Two New Species

Two new species of the genus Knipowitschia, Knipowitschia byblisia sp. nov. and Knipowitschia caunosi sp. nov., are described from the coastal Lake Köycegiz, southwest Turkey. Knipowitschia byblisia sp.nov. is placed in a group of species with reduced cephalic lateral-line canals and reduced squamation. This species is characterized by the presence of axillary and caudal peduncular patches of scales, by a distinct reduced head canal system with only the postorbital section of the supraorbital canal developed and with longitudinal and transversal rows of free neuromasts in the interorbit. Knipowitschia caunosi sp. nov. is placed in a group of species with a fairly complete head canal system and with scales continuously extending along lateral midline from the axilla to the caudal peduncle. This species is characterized by long transverse rows of free neuromasts on the nape and on the cheek, by a characteristic pattern of the preorbital series of free neuromasts with the anteriormost row lacking and with a reduced number of transverse suborbital rows. Both species are isolated and their distributions restricted to a small brackish lake in the west of the Anatolian south coast. This record represents the southern and easternmost of the genus Knipowitschia in the Mediterranean region. The origin of these two species is discussed.

The Islamia  spp. from Greece (Gastropoda: Hydrobiidae) with the description of two new species

2020 ◽  
Vol 32 ◽  
pp. 42-45
Author(s):  
Peter Glöer ◽  
Robert Reuselaars
Keyword(s):  
New Species ◽  
Mediterranean Region ◽  
The West ◽  
The Balkans ◽  
Two New Species ◽  
The Mediterranean

The hydrobiid genus Islamia Radoman, 1973 (Gastropoda: Hydrobiidae) comprises 47 species known from the Mediterranean region of which most are distributed in the west and central part, whereas 11 species are known from the Balkans. In this article we described two new Islamia species from Greece. The type localities of four Islamia species hitherto known from Greece are presented on a map.

Chorthippus brunneus subgroup (Orthoptera, Gomphocerinae) in Anatolia with description of two new species: data suggest an Anatolian origin for the lineage

Zootaxa ◽  
2010 ◽  
Vol 2410 (1) ◽  
pp. 1 ◽  
Author(s):  
DENIZ SIRIN ◽  
OTTO VON HELVERSEN ◽  
BATTAL CIPLAK
Keyword(s):  
New Species ◽  
Glacial Refugia ◽  
Biodiversity Hotspot ◽  
Ancestral Population ◽  
The West ◽  
East Europe ◽  
South East Europe ◽  
Two New Species ◽  
Chorthippus Biguttulus ◽  
A New Species

The Chorthippus biguttulus group distributed in the west Palaearctic, while intensively examined in Europe, is poorly known in the glacial refugia such as Anatolia. This produces constraints in making accurate statements about evolution and the biogeography of the group. The C. brunneus subgroup of this lineage is examined using large amounts of morphological and song data from Anatolia (Asian Turkey) and representatives from Europe. Song and morphology in combination suggested three species to be found in Anatolia. The first is C. bornhalmi Harz which is also known from south-east Europe. The other two are new species: Chorthippus antecessor sp. n. and Chorthippus relicticus sp. n.. Morphologically, C. antecessor sp. n. is the most aberrant species of the C. brunneus subgroup, but is similar to C. bornhalmi in song. The specific song and morphology (the aberrant number of stridulatory pegs) define C. relicticus as a new species and both also indicate that it is closely related to C. brunneus and C. jacobsi. A song and morphology based phyloylogenetic assumption for C. brunneus subgroup suggests C. antecessor, C. bornhalmi and C. miramae to constitute one clade and C. brunneus, C. jacobsi and C. relicticus another. The scenario suggested for their evolution assume the following steps: (i) divergence of C. bornhalmi from a C. antecessor like ancestor, (ii) derivation of an ancestral population (which later give rise to C. brunneus + C. jacobsi + C. relicticus) from a C. bornhalmi like ancestor, and (iii) later fragmentation of this ancestral population to result in the present three species (C. brunneus + C. jacobsi + C. relicticus). All of these events seem to be correlated with the climatic cycles during Pleistocene. The conclusion is that the two new species are range-restricted, vulnerable species as is the case for many other taxa present in the Mediterranean Taurus biodiversity hotspot.

Two new species of Pseudecheneis, rheophilic catfishes (Teleostei: Sisoridae) from Nepal

Zootaxa ◽  
2005 ◽  
Vol 1047 (1) ◽  
pp. 1 ◽  
Author(s):  
HEOK HEE NG ◽  
DAVID R. EDDS
Keyword(s):  
New Species ◽  
The Body ◽  
Unique Combination ◽  
Ganges River ◽  
Caudal Peduncle ◽  
Fin Ray ◽  
Two New Species ◽  
Eye Diameter ◽  
Adipose Fin ◽  
The Ganges

Two new species of sisorid catfish of the genus Pseudecheneis are described from tributaries of the Ganges River in Nepal: Pseudecheneis crassicauda and P. serracula. Pseudecheneis crassicauda can be distinguished from congeners by a unique combination of 38–39 vertebrae, caudal peduncle depth 6.0–6.6% SL, eye diameter 7.5–8.3% HL, length of adipose-fin base 20.3–24.3% SL, pelvic fins reaching the base of the first anal-fin ray, and the presence of pale spots on the body. Pseudecheneis serracula can be distinguished from congeners in having a unique combination of 36–38 vertebrae, strongly elevated neural spines of the last 2–3 preanal and first 6–7 postanal vertebrae, length of adipose-fin base 26.8–30.4% SL, pelvic fins reaching the base of the first analfin ray, and the presence of pale spots on the body.

Two new species of Bargmannia (Pyrostephidae, Physonectae, Siphonophorae)

Zootaxa ◽  
2019 ◽  
Vol 4686 (1) ◽  
pp. 74-82
Author(s):  
P. R. PUGH
Keyword(s):  
New Species ◽  
West Coast ◽  
Distal Part ◽  
The West ◽  
Two New Species ◽  
Living Species

Two new deep-living species of the genus Bargmannia (Siphonophorae, Physonectae, Pyrostephidae) are described based, almost exclusively, on the nectophores of single specimens collected by ROVs off the west coast of California. The nectophores of B. stenotes sp. nov. were relatively small, up to 11.4 mm in length and, in the preserved condition had very narrow nectosacs. There was a marked bend in the distal part of the preserved nectophore, resulting in the ostium opening upwards. The mature nectophores of B. profunda sp. nov. were almost twice as long as those of B. stenotes and were characterised by the fact that the lower lateral ridges did not join, distally, with the meso-lateral ones. This feature also was present in smaller nectophores of B. amoena but those of B. stenotes, at that stage, did not have a mouth-plate. 

Lower Cambrian (Branchian) trilobites and biostratigraphy of the Hanford Brook Formation, southern New Brunswick

2000 ◽  
Vol 74 (5) ◽  
pp. 858-878 ◽  
Author(s):  
Stephen R. Westrop ◽  
Ed Landing
Keyword(s):  
New Species ◽  
Nova Scotia ◽  
North America ◽  
New Brunswick ◽  
Lower Cambrian ◽  
Early Cambrian ◽  
The West ◽  
Middle Cambrian ◽  
Sequence Stratigraphic ◽  
Two New Species

The Hanford Brook Formation, one of the classic Cambrian units of Avalonian North America, contains at least eight species of endemic trilobites, including Berabichia milleri Westrop n. sp., that are assigned to seven genera. The vertical succession of faunas is far more complex than has been recognized previously, with each member containing a lithofacies-specific assemblage. These are, in ascending order: a bradoriid-linguloid Association without trilobites in the nearshore St. Martin's Member, a Protolenus Association in dysaerobic siltstones and sandstones of the Somerset Street Member, and a Kingaspidoides-Berabichia Association in hummocky cross-stratified sandstones of the Long Island Member that overlie a parasequence boundary at Hanford Brook. Due to the breakdown of biogeographic barriers in the late Early Cambrian, two new species-based zones, the Protolenus elegans and Kingaspidoides cf. obliquoculatus zones, share trilobite genera with the Tissafinian Stage of Morocco. This generic similarity has been the basis for correlation of this upper Lower Cambrian interval on the Avalon continent with the West Gondwanan lowest Middle Cambrian. However, the clear facies control on the occurrence of genera in the Hanford Brook Formation and the presence of an abrupt faunal break and unconformity at the base of the Tissafinian in Morocco makes this correlation questionable. The Hanford Brook Formation may represent a late Early Cambrian interval unknown in Gondwana. Sequence-stratigraphic criteria even raise the possibility that the Protolenus Association is the biofacies equivalent of Callavia broeggeri Zone faunas of the Brigus Formation of Newfoundland, Nova Scotia and Massachusetts.

scholarly journals On the Species of the Dugesia Gonocephala Group (Platyhelminthes, Turbellaria, Tricladida) from Greece

1984 ◽  
Vol 54 (1) ◽  
pp. 101-126 ◽  
Author(s):  
Elizabeth J. de Vries
Keyword(s):  
New Species ◽  
Related Species ◽  
Mediterranean Region ◽  
Eastern Mediterranean ◽  
Eastern Mediterranean Region ◽  
Species Group ◽  
Closely Related Species ◽  
Dugesia Gonocephala Group

Dugesia gonocephala is a species group, comprising numerous closely related species, which differ from each other in morphological and karyological aspects. In this paper known and presently described species, of the group from the eastern Mediterranean region, are reviewed. Hitherto the triclads of this region have been poorly known in comparison with their western counterparts. Yet there is a wealth of species in the area. Six well-delimited new species of the Dugesia gonocephala group are described and one further species is rescued from synonymy. The wealth of material available has also made possible an assessment of the taxonomic validity of many characters usually considered to be of importance within this difficult group.

Two more new species of the Cyrtodactylus peguensis group (Squamata: Gekkonidae) from the fringes of the Ayeyarwady Basin, Myanmar

Zootaxa ◽  
2019 ◽  
Vol 4577 (2) ◽  
pp. 274 ◽  
Author(s):  
L. LEE GRISMER ◽  
PERRY L. JR. WOOD ◽  
MYINT KYAW THURA ◽  
NAY MYO WIN ◽  
EVAN S. H. QUAH
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Mitochondrial Gene ◽  
Color Pattern ◽  
Wildlife Sanctuary ◽  
The West ◽  
Two New Species

Two new species of Bent-toed Geckos of the Cyrtodactylus peguensis group are described from foothill areas occurring on opposite sides of the Ayeyarwady Basin. Cyrtodactylus nyinyikyawi sp. nov. from the Shwe Settaw Wildlife Sanctuary, Magway Region in the east and C. pyadalinensis sp. nov. from the Panluang-Pyadalin Wildlife Sanctuary, Shan State in the west bear unique suits of morphological and color pattern character states separating them from all species in the peguensis group. Additionally, a molecular phylogeny based on the mitochondrial gene ND2 indicates that neither species is nested within, nor sister to any known species in the group. This study augments recent and ongoing studies showing that the Ayeyarwady Basin is herpetologically more diverse than previously considered and should be incorporated into ongoing discussions concerning conservation efforts in Myanmar. 

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