scholarly journals A new Contradens from Laos (Bivalvia: Unionidae: Contradentini)

2019 ◽  
Vol 24 ◽  
pp. 25-31
Author(s):  
Ekaterina S. Konopleva ◽  
Ivan N. Bolotov ◽  
Vitaly M. Spitsyn ◽  
Alexander V. Kondakov ◽  
Mikhail Yu. Gofarov ◽  
...  
Keyword(s):  
Endemic Species ◽  
Freshwater Mussel ◽  
Type Locality ◽  
Shell Shape ◽  
New Taxon ◽  
Restricted Range ◽  
Nucleotide Substitutions ◽  
Mussel Species ◽  
Mekong Basin ◽  
Rare Endemic

Here, we describe Contradens novoselovi sp. nov. (Bivalvia: Unionidae), a new freshwater mussel species from the Mekong Basin in Laos. Phylogenetic and morphological analyses reveal that the new taxon is closely related to Contradens comptus (Deshayes & Jullien, 1874) but can be distinguished from it by a smaller size, sub-ovate shell shape, tiny wrinkles near umbo, stronger pseudocardinal and lateral teeth, and fixed nucleotide substitutions. Contradens novoselovi sp. nov. is known only from the type locality in northwestern Laos and may represent a rare endemic species with restricted range.

scholarly journals Indonaia rectangularis (Tapparone-Canefri, 1889), comb. nov., a forgotten freshwater mussel species from Myanmar (Bivalvia, Unionidae)

ZooKeys ◽  
2019 ◽  
Vol 852 ◽  
pp. 23-30
Author(s):  
Ivan N. Bolotov ◽  
Ilya V. Vikhrev ◽  
Manuel Lopes-Lima ◽  
Mikhail Y. Gofarov ◽  
Ekaterina S. Konopleva ◽  
...  
Keyword(s):  
Freshwater Mussels ◽  
Freshwater Mussel ◽  
Original Description ◽  
Shell Shape ◽  
Nominal Species ◽  
Restricted Range ◽  
Additional Species ◽  
River Watershed ◽  
Mussel Species

Uniorectangularis Tapparone-Canefri, 1889 is a little-known nominal species of freshwater mussels described from a tributary of the Ayeyarwady River in Myanmar. This taxon was considered a synonym of Gibbosulalaosensis (Lea, 1863), a margaritiferid species. However, the range of Gibbosulalaosensis does not encompass the Ayeyarwady River watershed. Here we re-examine the holotype of Uniorectangularis and provide a conchological re-description of this species. Based on conchological features such as the shell shape, elevated umbo, and the structure of lateral and pseudocardinal teeth, we transfer this taxon to the genus Indonaia Prashad, 1918 and propose I.rectangularis (Tapparone-Canefri, 1889), comb. nov. It appears to be a rare freshwater mussel species with a restricted range, because it has not been found since the original description. Two additional species in this genus are known from Myanmar, i.e. Indonaiaandersoniana (Nevill, 1877) and I.subclathrata (Martens, 1899).

scholarly journals Last two hundred individuals: rediscovery of Scilla mesopotamica Speta (Hyacinthaceae), a threatened endemic species in Turkey

2011 ◽  
Vol 79 (1) ◽  
pp. 31-36
Author(s):  
Ismail Eker ◽  
Hasan Akan
Keyword(s):  
Geographical Distribution ◽  
Endemic Species ◽  
Extinction Risk ◽  
Type Locality ◽  
New Taxon ◽  
Limited Distribution ◽  
Habitat Ecology ◽  
East Anatolia

In this paper, the rediscovery of endemic and long missing species, <em>Scilla mesopotamica</em> Speta which had been only known from the type gathering, is given. The species has not been collected again after Sintenis in 1888, whose specimens served Speta for description of the new taxon. In 2004, the authors found it in a steppic rocky area, near Halfeti in Şanliurfa province, South East Anatolia, Turkey. After analyzing Sintenis' original collection notes, they concluded that this area is identical with the type locality. <em>S. mesopotamica</em> has an extremely limited distribution and is represented by less than 200 specimens in the single known population that covers less than 50 m<sup>2</sup>. Taxonomy of the species, detailed description with illustrations, geographical distribution, habitat, ecology and status of IUCN extinction risk and some comments on conservation of the plant are also presented.

scholarly journals Notes on the extended distribution of Humboldtia bourdillonii (Fabales: Fabaceae), an Endangered tree legume in the Western Ghats, India

2019 ◽  
Vol 11 (14) ◽  
pp. 14886-14890
Author(s):  
Anoop P. Balan ◽  
A. J. Robi ◽  
S. V. Predeep
Keyword(s):  
Endemic Species ◽  
Western Ghats ◽  
Type Locality ◽  
Tree Legume ◽  
Endangered Tree ◽  
Conservation Measures ◽  
Tiger Reserve ◽  
Kerala State ◽  
Periyar Tiger Reserve ◽  
The Western Ghats

Humboldtia bourdillonii is an Endangered tree legume; considered endemic to its type locality in the Periyar Tiger Reserve in Idukki District of Kerala State.  A new population of this highly threatened endemic species is located in the Vagamon Hills of Kottayam District which is about 70km away from its original locality.  The newly located population is drastically affected by the severe floods and landslides that occurred in Kerala state during August 2018.  Urgent conservation measures are needed to protect the population from further loss.  

The middle lower Cambrian (Ovetian)Lunagraulosn. gen. from Spain and the oldest trilobite records

2015 ◽  
Vol 152 (6) ◽  
pp. 1123-1136 ◽  
Author(s):  
ELADIO LIÑÁN ◽  
JOSÉ ANTONIO GÁMEZ VINTANED ◽  
RODOLFO GOZALO
Keyword(s):  
Fossil Record ◽  
Lower Cambrian ◽  
New Genus ◽  
Type Locality ◽  
New Taxon ◽  
Northern Spain ◽  
Central Spain ◽  
Additional Material ◽  
The World ◽  
The Village

AbstractThe type material ofAgraulos antiquusSdzuy, 1961 from the La Herrería Formation, northern Spain, is revised together with additional material and included in the new genusLunagraulos. The stratigraphical range ofLunagraulos antiquus(Sdzuy, 1961) – occurring below that of the trilobite species of the generaLunolenus,MetadoxidesandDolerolenusin the type locality of Los Barrios de Luna in the province of León, northern Spain – and the accompanying ichnofossil assemblage demonstrate an Ovetian age (lower part of Cambrian Stage 3, currently being discussed by the International Subcommission on Cambrian Stratigraphy) for this species. Moreover, the trilobiteLunagraulos tamamensisn. gen. n. sp. is found in the Tamames Sandstone near the village of La Rinconada in the province of Salamanca, central Spain. The biostratigraphical position of this new taxon and its accompanying ichnoassemblage is also analysed and assigned to the lowermost Ovetian Stage. The genusLunagraulosis therefore the oldest agraulid found in the fossil record. The exceptional presence ofLunagraulosin a marine coarse siliciclastic succession – a facies rather typical for the ichnofossilsCruzianaandRusophycus, some of the oldest signs of trilobite activity – suggests that first trilobite representatives may have inhabited high- to middle-energy, marine environments. This hypothesis may also explain both the taxonomic and biostratigraphic heterogeneity of the first trilobite genera appearing across the world, due to preservation problems in this type of facies. Comparison of theLunagraulos biostratigraphy with other coeval Spanish fossil assemblages allows us to propose its intercontinental correlation with the oldest records of currently known trilobites.

Pycreus rubidomontanus (Cyperaceae), a widespread but undescribed species from tropical West Africa

Phytotaxa ◽  
2019 ◽  
Vol 405 (2) ◽  
pp. 83
Author(s):  
FILIP VERLOOVE ◽  
JANE BROWNING ◽  
ATTILA MESTERHÁZY
Keyword(s):  
New Species ◽  
West Africa ◽  
Endemic Species ◽  
Central Africa ◽  
Similar Species ◽  
Undescribed Species ◽  
South Central ◽  
Rare Endemic ◽  
A New Species

Pycreus rubidomontanus is described as a new species. It is relatively widespread in tropical West Africa where it had been confused up to present with P. atrorubidus, a very rare endemic species from Zambia in south-central Africa that probably is known only from the type gathering. Differences between these and other similar species are discussed and the new species is copiously illustrated.

Sign in / Sign up

Export Citation Format

Share Document