scholarly journals A new genus and species of uncertain phylogenetic position within the family Hydrobiidae (Caenogastropoda: Truncatelloidea) discovered in Tunisian springs

2017 ◽  
Author(s):  
Noureddine KHALLOUFI ◽  
Mustapha BÉJAOUI ◽  
Diana DELICADO
Keyword(s):  
North Africa ◽  
New Genus ◽  
Shell Shape ◽  
Phylogenetic Position ◽  
New Taxon ◽  
New Genus And Species ◽  
Bayesian Approaches ◽  
Anatomical Structures ◽  
Comprehensive Literature Review ◽  
The Family

The species richness of the aquatic (non-marine) gastropod family Hydrobiidae Stimpson, 1865 reaches its peak in the European region partly because other areas, such as North Africa, remain to be extensively surveyed. Most of the hydrobiid species described in North Africa have been ascribed to the subfamilies Pseudamnicolinae, Hydrobiinae and the genus Mercuria. Little is known about the presence of other hydrobiid subfamilies. This study examines several specimens of gastropods collected from two springs in Tunisia. Based on a comprehensive literature review and rigorous anatomical and molecular comparisons with known species from North Africa, Europe and Asia Minor of similar morphology, we here describe a new genus, Bullaregia gen. nov., and new species Bullaregia tunisiensis gen. et sp. nov. Although the shell shape of this Tunisian species resembles that of European hydrobiid genera such as Belgrandiella, it differs in other anatomical structures (i.e., penis with a glandular strap-like lobe, and two seminal receptacles, SR1 pedunculate, SR2 sessile and less developed). Using maximum likelihood and Bayesian approaches, phylogenetic relationships inferred from mtCOI sequences point to an independent evolutionary lineage for this new taxon outside Belgrandiella and other known hydrobiid subfamilies.

A new genus and species of groundwater isopod of the family Protojaniridae (Isopoda: Asellota: Gnathostenetroidoidea) from southern Chile

Zootaxa ◽  
2021 ◽  
Vol 4966 (5) ◽  
pp. 550-562
Author(s):  
JORGE PÉREZ-SCHULTHEISS ◽  
GEORGE D. F. WILSON
Keyword(s):  
New Genus ◽  
South American ◽  
New Taxon ◽  
Southern Chile ◽  
New Genus And Species ◽  
The Third ◽  
The Family ◽  
Apical Lobe ◽  
Antennal Scale ◽  
Freshwater Springs

A new asellotan isopod of the family Protojaniridae Fresi, Idato & Scipione, 1980 is described from freshwater springs in the Osorno province, Los Lagos region, southern Chile. Wiyufiloides osornoensis gen. & sp. n. is the third South American protojanirid species and the first known groundwater isopod in Chile. The new genus and species is principally characterized by the presence of a vestigial antennal scale, a strongly subchelate pereiopod I and the absence of an apical lobe on the protopod of pleopod II. The new taxon is described in detail and figures are given. 

scholarly journals Undiscovered Biodiversity of the European Moss Flora: Neodicranella hamulosa (Aongstroemiaceae), a New Genus and Species from SW Portugal

Plants ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2289
Author(s):  
Ronald D. Porley ◽  
Vladimir Fedosov ◽  
Vítězslav Plášek ◽  
Alina Fedorova
Keyword(s):  
New Genus ◽  
Novel Species ◽  
Molecular Data ◽  
New Taxon ◽  
New Genus And Species ◽  
The Family ◽  
Bioclimatic Zone ◽  
Morphological And Molecular Data ◽  
Sw Portugal

A new genus is described to accommodate Neodicranella hamulosa, a novel species resolved in the family Aongstroemiaceae, from the Monchiquense district in SW Portugal. Characterized by its small size, erect spreading to subsecund non-sheathing leaves, plane bistratose leaf margins, and rhizoidal gemmae with slightly protruberant cells, it differs from all other European Dicranellaceae in the uniquely patterned distal peristome segments with backward-pointing papillae resembling hooked barbs. The species appears to be endemic to the sub-Mediterranean bioclimatic zone, in wooded biomes where humidity remains relatively high throughout the year. Morphological and molecular data strongly support the singularity of this new taxon. The species is illustrated by photomicrographs and SEM, and its ecology and conservation are discussed.

A new thylacosmilid (Mammalia, Metatheria, Sparassodonta) from the Miocene of Patagonia, Argentina

Zootaxa ◽  
2010 ◽  
Vol 2552 (1) ◽  
pp. 55 ◽  
Author(s):  
ANALÍA M. FORASIEPI ◽  
ALFREDO A. CARLINI
Keyword(s):  
Middle Miocene ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Dental Morphology ◽  
New Taxon ◽  
Single Specimen ◽  
New Genus And Species ◽  
The West ◽  
Rio Negro ◽  
The Family

A new genus and species, Patagosmilus goini, of the family Thylacosmilidae (Mammalia, Metatheria, Sparassodonta) is described here. The new taxon is based on a single specimen collected from the west margin of the Río Chico, in Río Negro Province, Argentina, from the middle Miocene Colloncuran SALMA. Until now, two formally recognized species were encompassed in the family Thylacosmilidae: Thylacosmilus atrox, from the late Miocene-late Pliocene Huayquerian to Chapadmalalan SALMAof Argentina and probably Uruguay; and Anachlysictis gracilis, from the middle Miocene Laventan SALMA of Colombia. Recognition of the Patagonian taxon, Patagosmilus, provides new anatomical data, likely to be included in future phylogenetic analyses. The overall morphology of Patagosmilus suggests that it has a more generalized anatomy than Thylacosmilus. The dental morphology suggests the new Patagonian taxon was probably closer to Thylacosmilus than Anachlysictis. Saber-tooth thylacosmilids have several autapomorphic features in the skull that differentiate them from other sparassodonts, including the delayed replacement or non-replacement of the deciduous last premolar.

The centipede family Anopsobiidae new to North America, with the description of a new genus and species and notes on the Henicopidae of North America and the Anopsobiidae of the Northern Hemisphere (Chilopoda, Lithobiomorpha)

Zootaxa ◽  
2018 ◽  
Vol 4422 (2) ◽  
pp. 259 ◽  
Author(s):  
WILLIAM A. SHEAR
Keyword(s):  
North America ◽  
Northern Hemisphere ◽  
New Genus ◽  
New Taxon ◽  
New Genus And Species ◽  
Lava Tubes ◽  
The Family ◽  
North America North

Speleopsobius weaveri, n. gen., n. sp., is described from lava tubes in southern Idaho, USA. The new taxon, and species of the genera Buethobius Chamberlin, 1911 and its probable synonym Yobius Chamberlin, 1945, are members of the family Anopsobiidae, not previously reported from North America. All known species of Henicopidae and Anopsobiidae from North America north of México are listed and briefly noted, along with all known anopsobiids from the northern hemisphere. Anopsobiella dawidoffi Attems, 1938 (Vietnam) is likely not a member of the family Anopsobiidae. 

A new genus and species of cockroach (Blattida: Phyloblattidae) from the Permian/Triassic boundary beds of Tunguska Basin in eastern Siberia, Russia

Zootaxa ◽  
2010 ◽  
Vol 2353 (1) ◽  
pp. 55 ◽  
Author(s):  
PETER VRŠANSKÝ
Keyword(s):  
Volcanic Ash ◽  
New Genus ◽  
New Taxon ◽  
Eastern Siberia ◽  
New Genus And Species ◽  
Triassic Boundary ◽  
The Family ◽  
Tunguska Basin ◽  
Permian Triassic Boundary

Macroscopic fossils of terrestrial animals originating directly from deposits close to the Permian/Triassic boundary are very scarce. Volcanic ash sediments in Eastern Siberia were found to hold the cockroach Sobytie tungusicum gen. et sp. n. This new taxon belongs to the predominantly Palaeozoic family Phyloblattidae, but has many advanced features characteristic of the Mesozoic family Caloblattinidae, and also of the basal Liberiblattinidae. These connections provide an indication of the origin of the family Liberiblattinidae and thus all the Mesozoic cockroach lineages from such Phyloblattidae – precursors of the Caloblattinidae.

scholarly journals Dallasaurus turneri, a new primitive mosasauroid from the Middle Turonian of Texas and comments on the phylogeny of Mosasauridae (Squamata)

2005 ◽  
Vol 84 (3) ◽  
pp. 177-194 ◽  
Author(s):  
G.L. Bell ◽  
M.J. Polcyn
Keyword(s):  
Phylogenetic Analysis ◽  
New Genus ◽  
Body Plan ◽  
Current Concept ◽  
New Taxon ◽  
New Genus And Species ◽  
North Central ◽  
The Family ◽  
Central Texas ◽  
Continued Use

AbstractA new genus and species of primitive-limbed mosasauroid, Dallasaurus turneri, from the Middle Turonian (∼92 Ma) of north-central Texas, is described on the basis of two incomplete skeletons. The new taxon retains plesiomorphic characters such as facultatively terrestrial limbs (plesiopedal) but also exhibits certain characters shared with derived mosasaurs of the subfamily Mosasaurinae. In phylogenetic analysis, the new taxon reconstructs as the basal member of that clade. Other plesiopedal taxa previously included in the family Aigialosauridae reconstruct in basal positions within three different, major clades that include members that achieved the derived (hydropedal) fin-like limb condition. In addition, Opetiosaurus and Aigialosaurus reconstruct as successive outgroup taxa to all other mosasauroids, thereby demonstrating the paraphyletic nature of the current concept of Aigialosauridae. Interpretation of our phylogenetic analysis suggests that three different lineages of mosasauroids independently achieved the derived mosasaur body plan, including fully marine limb modifications culminating in the development of flippers or paddle-like appendages. The inclusion of plesiopedal forms within lineages of well-established hydropedal clades requires a reorganisation of our concepts of Mosasauridae to include these basal forms. In order to avoid continued use of the paraphyletic taxon ‘Aigialosauridae’ as currently defined, we recommend ‘Aigialosauridae’ as a formal taxonomic name be used only for inclusion of Aigialosaurus dalmaticus and potential members of its own independent lineage. This also avoids the implicit polyphyletic use of ‘Mosasauridae’. Additionally, the diagnosis of Mosasauridae should be modified to exclude limb characters that discriminate between more terrestrial versus more aquatic adaptations.

Ensigeropus, a new genus of the family Platyischnopidae (Amphipoda: Amphilochidea) from Northern Chile

Zootaxa ◽  
2017 ◽  
Vol 4311 (3) ◽  
pp. 399
Author(s):  
JORGE PÉREZ-SCHULTHEISS
Keyword(s):  
Posterior Margin ◽  
New Genus ◽  
New Taxon ◽  
Northern Chile ◽  
New Genus And Species ◽  
Upper Lip ◽  
The North ◽  
Mandibular Molar ◽  
The Family

A new genus and species of Platyischnopidae from the sandy intertidal of two localities in the north of Chile are described. Ensigeropus cachinalito n. gen., n. sp. is similar to Eudevenopus Thomas & Barnard, 1983 in most characters; however, it presents characters hitherto not reported in the family, as the lobate upper lip and the absence of a mandibular molar. The new taxon is easily recognized among all American Platyischnopidae by the presence of a conspicuous tooth on the posterior margin of the basis of pereopod 7, a character present also in species of the Australian genus Tomituka Barnard & Drummond, 1979. 

scholarly journals Description and relationships of Otothyropsis marapoama, a new genus and species of hypoptopomatine catfish (Siluriformes: Loricariidae) from rio Tietê basin, southeastern Brazil

2005 ◽  
Vol 3 (4) ◽  
pp. 489-498 ◽  
Author(s):  
Alexandre C. Ribeiro ◽  
Murilo Carvalho ◽  
Alex L. A. Melo
Keyword(s):  
New Genus ◽  
Sister Group ◽  
Headwater Stream ◽  
Southeastern Brazil ◽  
Phylogenetic Position ◽  
New Taxon ◽  
New Genus And Species ◽  
Paraná Basin ◽  
Parana Basin

Otothyropsis marapoama, a new genus and species, is described based on specimens recently collected in a headwater stream of the middle stretch of the rio Tietê, a river from the upper rio Paraná basin in southeastern Brazil. The new taxon belongs to a clade also encompassing the genera Schizolecis, Otothyris and Pseudotothyris. Otothyropsis marapoama is hypothesized to be the sister-group of Pseudotothyris and Otothyris based mainly on the presence of several derived characters of the swimbladder capsule and associated bones. Several paedomorphic characters shared by Pseudotothyris and Otothyris and their significance for the phylogenetic position of the new genus are discussed.

New genus and species of the family Niphargidae (Crustacea: Amphipoda: Senticaudata), Chaetoniphargus lubuskensis gen. nov., sp. nov. from Croatia

Zootaxa ◽  
2019 ◽  
Vol 4545 (2) ◽  
pp. 249
Author(s):  
GORDAN S. KARAMAN ◽  
BORIS SKET
Keyword(s):  
New Genus ◽  
New Taxon ◽  
New Genus And Species ◽  
The Family ◽  
Subterranean Waters

New genus and species of the family Niphargidae (Crustacea: Amphipoda: Senticaudata), Chaetoniphargus lubuskensis gen. nov., sp. nov. from the subterranean waters of cave Lubuška jama near Hajdučki Kukovi in the western part of Velebit Mt. in Croatia, is described and figured, and its relations to other genera and species of the family Niphargidae is discussed. The new taxon is a small niphargid, similar to Niphargobates. The list of all known genera of family Niphargidae is given and key to the genera of this family is presented. 

scholarly journals A new genus and species of characid fish from the Amazon basin: the recognition of a relictual lineage of characid fishes (Ostariophysi: Cheirodontinae: Cheirodontini)

2008 ◽  
Vol 6 (4) ◽  
pp. 663-678 ◽  
Author(s):  
Cristina M. Bührnheim ◽  
Tiago P. Carvalho ◽  
Luiz R. Malabarba ◽  
Stanley H. Weitzman
Keyword(s):  
Amazon Basin ◽  
New Genus ◽  
Abdominal Cavity ◽  
Phylogenetic Position ◽  
New Taxon ◽  
New Genus And Species ◽  
Caudal Fin ◽  
Caudal Vertebrae ◽  
Fin Rays ◽  
Close Relationship

Amazonspinther dalmata, a new miniature characid from the streams of rio Purus and rio Madeira, right bank tributaries of the rio Amazonas, is described as a new genus and species of the subfamily Cheirodontinae. The unique characters of the new genus and species are the three remarkable black blotches on the base of the dorsal, anal, and caudal fins, the anteriormost proximal radial of the anal fin with an anteriorly extended lamina entering the abdominal cavity, and the extremely elongate caudal peduncle. The reduced number of ventral procurrent caudal-fin rays (7-9), and the hemal spines of only posterior one, two, or sometimes three caudal vertebrae directly articulating with the ventral procurrent caudal-fin rays further diagnoses the new taxon from remaining genera of the tribe Cheirodontini. The results of a phylogenetic analysis strongly support a close relationship between A. dalmata and Spintherobolus in the tribe Cheirodontini on the basis of fifteen unambiguous synapomorphies. Ten of these characters, previously hypothesized as exclusive synapomorphies for Spintherobolus, were now also identified in Amazonspinther, such as the pattern of exposed neuromasts on the head, the presence of a second pseudotympanum anterior to the first pleural rib, and the nearly discoidal coracoid bone. A discussion about the phylogenetic position of the closely related fossil †Megacheirodon to Spintherobolus and Amazonspinther is also provided. Convergent characters shared between Amazonspinther and the characid Priocharax are discussed in relation to miniaturization. Biogeographical implications of the diversification of Amazonspinther, Spintherobolus, and Megacheirodon lineages are discussed.

Sign in / Sign up

Export Citation Format

Share Document