A revision of the Monodelphis glirina group (Didelphidae: Marmosini), with a description of a new species from Roraima, Brazil

Abstract Short-tailed opossums of the nominotypical subgenus Monodelphis occur throughout most of the cis-Andean lowlands of tropical South America. Among its member species, a monophyletic group that includes M. glirina (Amazonian red-sided opossum), M. sanctaerosae (Santa Rosa short-tailed opossum), and an unnamed taxon, herein referred to as the Monodelphis glirina group, is the focus of this paper. I provide an emended diagnosis for species of the group, information about geographic variation in M. glirina (including M. maraxina [Marajó short-tailed opossum]), and a formal description for the unnamed taxon mentioned above. The new species, known from two savanna localities in northeastern Roraima, is geographically disjunct from its closer relatives, M. glirina and M. sanctaerosae, only known to occur south of the Amazon. The new species differs from other congeneric taxa by a set of morphological characters and by DNA sequences. Cuícas-de-cauda-curta do subgênero nominotípico Monodelphis ocorrem na maior parte das planícies cis-Andinas da América do Sul tropical. Dentre as espécies membro, o grupo monofilético que inclui M. glirina, M. sanctarosae, e um táxon ainda não descrito, referido como grupo Monodelphis glirina, é o foco do presente estudo. Aqui são fornecidas diagnoses emendadas para as espécies do grupo, informações sobre variação geográfica em M. glirina (incluindo M. maraxina), e descrição formal para o novo táxon mencionado acima. A nova espécie, conhecida de duas localidades de savana no nordeste de Roraima, encontra-se geograficamente disjunta das espécies mais proximamente relacionadas, M. glirina e M. sanctaerosae, somente conhecidas para a porção sul da Amazônia. A nova espécie difere das demais espécies congenéricas por um conjunto de características morfológicas e por sequências de DNA.

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A new species of Pseudocalotes (Squamata: Agamidae) from the Bukit Barisan Range of Sumatra with an Estimation of its phylogeny

Zootaxa ◽

10.11646/zootaxa.4276.2.4 ◽

2017 ◽

Vol 4276 (2) ◽

pp. 215 ◽

Cited By ~ 4

Author(s):

MICHAEL B. HARVEY ◽

KYLE SHANEY ◽

AMIR HAMIDY ◽

NIA KURNIAWAN ◽

ERIC N. SMITH

Keyword(s):

Phylogenetic Analysis ◽

New Species ◽

Dna Sequences ◽

Morphological Characters ◽

Monophyletic Group ◽

Western Coast ◽

Montane Forests ◽

Its Phylogeny ◽

Fifth Toe ◽

A New Species

We describe a new species of Pseudocalotes from montane forests of the central, western coast of Sumatra. The combination of 3 or 4 interoculabials, slightly enlarged and heavily keeled scales on the lower flanks, a white scapular spot, a relatively long fifth toe, bicarinate lamellae at the base of Toe III, absence of a postrictal modified scale, and three rows of paravertebrals directed dorsally and posteriorly distinguishes the new species from its congeners on Sumatra and Java. Among the new characters defined in this study, counts of subdigital lamellae within the “span of Toe V” proved particularly useful for diagnosing species of Pseudocalotes. Phylogenetic analysis of DNA sequences identified a monophyletic group containing the Sumatran and Javan Pseudocalotes. Based on the phylogeny, we define a P. cybelidermus Group containing P. cybelidermus and P. guttalineatus and a P. tympanistriga Group containing P. tympanistriga, P. rhammanotus, and the new species. Combinations of five morphological characters define each of these two clades. As currently defined, Pseudocalotes is polyphyletic; Javan and Sumatran species are more closely related to other draconines such as Dendragama boulengeri than they are to some mainland species.

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Salicornia cuscoensis (Amaranthaceae/Chenopodiaceae), a new species from Peru (South America)

Phytotaxa ◽

10.11646/phytotaxa.319.3.4 ◽

2017 ◽

Vol 319 (3) ◽

pp. 254 ◽

Cited By ~ 1

Author(s):

M. ÁNGELES ALONSO ◽

MANUEL B. CRESPO ◽

HELMUT FREITAG

Keyword(s):

New Species ◽

South America ◽

Morphological Characters ◽

Tierra Del Fuego ◽

South American ◽

Habitat Distribution ◽

Closely Related Species ◽

Molecular Analyses ◽

Southern Patagonia ◽

A New Species

The name Salicornia cuscoensis given to a plant from high Andean saltmarshes near Cusco [Cuzco] and Ayacucho, Peru (South America) is validated by a diagnosis and description. The main morphological characters that separate S. cuscoensis from other closely related species are creeping habit, delicate branches, inflorescence of short and thin spikes, and seed indumentum. The new species clearly differs from other perennial Salicornia taxa growing in high Andean saltmarshes such as S. pulvinata and S. andina. The former forms small compact cushions producing very short, few-flowered inflorescences. The latter shows woody stems and forms larger rounded carpets. Morphologically, S. cuscoensis is also similar to S. magellanica, a species growing along the seashore in southern Patagonia and Tierra del Fuego, but the latter has shorter and wider inflorescences and larger seeds with a different type and arrangement of indumentum. Molecular analyses also supported the separation of S. cuscoensis. Data on habitat, distribution and phylogenetic relationships are presented for the new species and its relatives, and an identification key is given for the South American taxa of the genus Salicornia.

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Leptolejeunea nigra (Lejeuneaceae), a new species with brownish black ocelli based upon morphology and DNA sequences

Phytotaxa ◽

10.11646/phytotaxa.427.1.4 ◽

2019 ◽

Vol 427 (1) ◽

pp. 31-42

Author(s):

LEI SHU ◽

RUI-LIANG ZHU

Keyword(s):

New Species ◽

Molecular Phylogeny ◽

Dna Sequences ◽

Phylogenetic Analyses ◽

Morphological Characters ◽

Time Span ◽

Molecular Dating ◽

Molecular Phylogenetic ◽

Brownish Black ◽

A New Species

Based on molecular phylogenetic analyses and morphological characters, a new species from Bangladesh, northern Vietnam, and southwestern China, Leptolejeunea nigra, is described. It is mostly similar to L. balansae but remarkable for having brownish black ocelli in its leaf lobes. In the molecular phylogeny, the samples of L. nigra are not nested within any clade and form an independent lineage. In particular, the molecular dating suggested that the divergence of L. nigra happened in time span of the formation of the Himalayas.

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A new species of Deltamys Thomas, 1917 (Rodentia: Cricetidae) endemic to the southern Brazilian Araucaria Forest and notes on the expanded phylogeographic scenario of D. kempi

Zootaxa ◽

10.11646/zootaxa.4294.1.3 ◽

2017 ◽

Vol 4294 (1) ◽

pp. 71 ◽

Cited By ~ 4

Author(s):

FERNANDO MARQUES QUINTELA ◽

FABRÍCIO BERTUOL ◽

ENRIQUE MANUEL GONZÁLEZ ◽

PEDRO CORDEIRO-ESTRELA ◽

THALES RENATO OCHOTORENA DE FREITAS ◽

...

Keyword(s):

New Species ◽

South America ◽

Dna Sequences ◽

Posterior Margin ◽

Southeastern Brazil ◽

Patos Lagoon ◽

Araucaria Forest ◽

Phylogeographic Break ◽

Skull Measurements ◽

A New Species

Deltamys is a monotypic sigmodontine rodent from the Pampas of South America. In addition to the formally recognized D. kempi that inhabits lowlands, an undescribed form Deltamys sp. 2n=40 was recently found in the highlands of southeastern Brazil. In the present study, we perform a phylogeographic reassessment of Deltamys and describe a third form of the genus, endemic to the Brazilian Araucaria Forest. We describe this new species based on an integrative analysis, using complete cytochrome b DNA sequences, karyology and morphology. Bayesian tree recovered two allopatric clades (lowlands vs. highlands) and three lineages: (i) the lowland D. kempi, (ii) the highland Deltamys sp. 2n=40, and (iii) Deltamys araucaria sp. n. Deltamys araucaria sp. n. is karyotypically (2n=34) and morphologically distinguishable from D. kempi (2n=37-38), showing a tawnier dorsum/flank pelage, presence of a protostyle, M1 alveolus positioned anteriorly to the posterior margin of the zygomatic plate, and several other distinguishing characteristics. A phylogeographic assessment of D. kempi recovered two haplogroups with significant differences in skull measurements. This phylogeographic break seems to have been shaped by the Patos Lagoon estuarine channel. The diversification in Deltamys might have been triggered by dispersal of older lineages over different altitudinal ranges in the Paraná geological basin.

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Description of a new genus and two new species of killifish (Cyprinodontiformes: Nothobranchiidae) from West Africa, with a discussion of the taxonomic status of Aphyosemion maeseni Poll, 1941

Zootaxa ◽

10.11646/zootaxa.2294.1.1 ◽

2009 ◽

Vol 2294 (1) ◽

pp. 1-22 ◽

Cited By ~ 3

Author(s):

RAINER SONNENBERG ◽

ECKHARD BUSCH

Keyword(s):

New Species ◽

Dna Sequences ◽

New Genus ◽

Nuclear Dna ◽

Taxonomic Status ◽

Morphological Characters ◽

Color Pattern ◽

Monophyletic Group ◽

Morphological Data ◽

Adult Males

The phylogeny of the West African genus Archiaphyosemion was studied with mitochondrial and nuclear DNA sequences. The results of the combined dataset presented here did not support a monophyletic group. After the exclusion of the type species of the genus, A. guineense, the remaining species form a well-supported monophyletic group. Based on these molecular results and supported by morphological data, we suggest a new name for this group, Nimbapanchax, new genus. Additionally, based on a recent collection in Guinea, two new Nimbapanchax species were described. The taxon Nimbapanchax leucopterygius, new species, is described for a nothobranchiid fish formerly misidentified as Archiaphyosemion maeseni (Poll, 1941). Nimbapanchax melanopterygius, new species, is described from the Mount Nimba region in southeastern Guinea. Both new Nimbapanchax species are clearly distinguished from their congeners by the coloration pattern of adult males. The results of the DNA data support the assumption based on color pattern and morphological characters that the new described species are sister taxa. The type of Aphyosemion maeseni Poll, 1941 was reexamined and transferred to the genus Epiplatys, a decision based on diagnostic morphological characters.

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Morphological characters and molecular data reveal a new species of Rhodonia (Polyporales, Basidiomycota) from China

Phytotaxa ◽

10.11646/phytotaxa.328.2.8 ◽

2017 ◽

Vol 328 (2) ◽

pp. 175

Author(s):

YUAN YUAN ◽

LU-LU SHEN

Keyword(s):

New Species ◽

Rna Polymerase Ii ◽

Dna Sequences ◽

Large Subunit ◽

Morphological Characteristics ◽

Northwest China ◽

Morphological Characters ◽

Molecular Data ◽

Molecular Evidence ◽

A New Species

A new polypore, Rhodonia tianshanensis, collected from West Tianshan Nature Reserve in Xinjiang Autonomous Region (northwest China), is described and illustrated based on morphological characteristics and molecular evidence. It is characterized by having resupinate basidiomata with an oblique tube layer, fusoid cystidioles in the hymenium, and cylindrical basidiospores. Based on multiple loci DNA sequences including the internal transcribed spacer (ITS), the large subunit (nLSU), and the second subunit of RNA polymerase II (RPB2) regions, our phylogeny strongly supported R. tianshanensis as a new species belonging to the genus Rhodonia.

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Michaelshaffera gen. n. - a pyraloid taxon lacking an abdominal tympanal organ (Lepidoptera: Pyralidae)

Insect Systematics & Evolution ◽

10.1163/187631297x00268 ◽

1997 ◽

Vol 28 (4) ◽

pp. 391-402 ◽

Cited By ~ 3

Author(s):

M. Alma Solis

Keyword(s):

New Species ◽

South America ◽

Type Species ◽

French Guiana ◽

Morphological Characters ◽

New Combination ◽

Immature Stages ◽

Tympanal Organ ◽

Lepidoptera Pyralidae ◽

A New Species

AbstractMichaelshaffera gen. n. is comprised of two species, M. maidoa (Schaus), new combination, the type species, described from French Guiana, and a new species, M. beckeri, here described from South America. The assignment of taxa to the Pyraloidea is based primarily on characters of the tympanal organs and immature stages. Michaelshaffera lacks a tympanal organ and the immatures are unknown. The rationale for the placement of this genus in the Pyraloidea and lower hierarchical ranks is discussed based on other morphological characters.

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A new species of manakin (Aves: Pipridae; Machaeropterus) from Peru with a taxonomic reassessment of the Striped Manakin (M. regulus) complex

Zootaxa ◽

10.11646/zootaxa.4320.2.11 ◽

2017 ◽

Vol 4320 (2) ◽

pp. 379 ◽

Cited By ~ 1

Author(s):

DANIEL F. LANE ◽

ANDREW W. KRATTER ◽

JOHN P. O’NEILL

Keyword(s):

New Species ◽

South America ◽

Atlantic Forest ◽

Morphological Characters ◽

Biological Species ◽

New Taxon ◽

Colombian Andes ◽

New Form ◽

San Martín ◽

A New Species

We describe a new taxon of manakin in the Machaeropterus regulus complex, from the foothills of southwestern Loreto and northern San Martín departments, Peru. This new form appears to be almost identical morphologically to the Tepui form M. regulus aureopectus but differs strongly from that and all other members of the M. regulus complex in voice. Therefore, we conclude that this population represents a new biological species that we here name Machaeropterus eckelberryi. Based on voice and some morphological characters, we concur with several previous authors (e.g., Whittaker & Oren 1999; Snow 2004; Ridgely & Tudor 2009) that nominate M. regulus (Eastern Striped Manakin), of the Atlantic Forest of Brazil, should be separated as a biological species from the polytypic Machaeropterus striolatus of western South America (Western Striped Manakin), including M. s. striolatus of Amazonia, M. r. obscurostriatus and M. r. zulianus of the Venezuelan Andes, M. r. antioquiae of the Colombian Andes, and M. r. aureopectus of the tepuis region.

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First molecular phylogeny of Laevicaudata (Crustacea: Branchiopoda) with description of a new species of Lynceus from Chile and an updated key to species in the Americas

Invertebrate Systematics ◽

10.1071/is18073 ◽

2019 ◽

Author(s):

Zandra M. S. Sigvardt ◽

D. Christopher Rogers ◽

Patricio De los Ríos ◽

Ferran Palero ◽

Jørgen Olesen

Keyword(s):

New Species ◽

South America ◽

Molecular Phylogeny ◽

Dna Sequences ◽

Cross Contamination ◽

Key To Species ◽

Australian Species ◽

Morphological Studies ◽

America South ◽

A New Species

The first molecular phylogeny of Lynceus (Crustacea: Branchiopoda: Laevicaudata) is presented together with a description of a new species of laevicaudatan branchiopod from Chile, Lynceus huentelauquensis, sp. nov. DNA sequences were obtained from six species of Lynceus using freshly collected specimens from Europe, North America, South America, and Australia and combined with GenBank sequences from previous studies. Specimens of the new species were collected from a pool on the Huentelauquén Plains near Huentelauquén City. Our molecular analyses placed L. huentelauquensis, sp. nov. within Lynceus and close to a cluster of Australian species, and revealed morphological misidentifications, cross-contamination, or incorrect upload in earlier GenBank sequences. L. huentelauquensis, sp. nov. is separated from other Lynceus primarily by the morphology of the rostrum and the male claspers. L. huentelauquensis, sp. nov. is the first described laevicaudatan from Chile, the sixth from South America, and the 13th from the Americas. The morphology of laevicaudatans from the Americas is reviewed and an updated key to the (male) Lynceidae of the region is provided. Our study highlights the necessity of a revision of Laevicaudata using multiple genetic markers as well as thorough morphological studies on a greater number of taxa. urn:lsid:zoobank.org:pub:9A783D96-B270-40DF-8361-11BA063C9A0F

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Morphology and Molecular Phylogeny of the East and Southeast Asian Meghimatium slugs (Gastropoda: Pulmonata: Philomycidae) and description of a new species

Zootaxa ◽

10.11646/zootaxa.2890.1.1 ◽

2011 ◽

Vol 2890 (1) ◽

pp. 1 ◽

Cited By ~ 2

Author(s):

CHI-LI TSAI ◽

CHUNG-CHENG LU ◽

HSIAO-WEI KAO

Keyword(s):

New Species ◽

Molecular Phylogeny ◽

Ribosomal Rna ◽

Dna Sequences ◽

Phylogenetic Analyses ◽

Monophyletic Group ◽

Medium Size ◽

Evolutionary Trend ◽

Rna Genes ◽

A New Species

Meghimatium is a group of terrestrial slugs distributed in Asia. 185 specimens were collected from Taiwan, China, Okinawa (Japan), Thailand and Malaysia. Phylogenetic analyses using concatenated DNA sequences of cytochrome C oxidase subunit I, 16S ribosomal RNA and nuclear 28S ribosomal RNA genes revealed that clades in the resulting molecular phylogeny of Meghimatium are largely congruent with taxa identified on the basis of their genitalia. Four monophyletic groups, i.e., the M. fruhstorferi, M. burchi, M. uniforme and M. striatum complexes, with moderate to strong statistical supports (86/53/0.98/66, 100/100/1.00/100, 100/100/1.00/100, 100/100/1.00/100) were identified. M. pictum is paraphyletic and is clustered with M. bilineatum to constitute an additional monophyletic group (100/100/1.00/100). Body size does not show an evolutionary trend either from small to large or vice versa, based on the phylogenetic tree. A new species, M. baoshanense sp. nov., is named based on the included specimens constituting a monophyletic group, its medium size (40.1–52.7 mm in body length) and its genitalia with 10–18 papillae at the lower end of the spermathecal duct where it connects to the uterus and vagina.

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