Taxonomic review of the slender mouse opossums of the “Parvidens” group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species

Zootaxa ◽  
2020 ◽  
Vol 4890 (2) ◽  
pp. 201-233
Author(s):  
CLAUDILÍVIA FERREIRA ◽  
ANA CRISTINA MENDES DE OLIVEIRA ◽  
LUAN GABRIEL LIMA-SILVA ◽  
ROGÉRIO VIEIRA ROSSI
Keyword(s):  
New Species ◽  
Molecular Data ◽  
Southeastern Brazil ◽  
Left Bank ◽  
Multivariate Statistical ◽  
Xingu River ◽  
Taxonomic Review ◽  
The North ◽  
Madeira River ◽  
A New Species

The genus Marmosops comprises small marsupials of the family Didelphidae (≤ 200 g), widely distributed in a variety of lowland rainforest and montane forest habitats, extending from Panama to southern Bolivia and southeastern Brazil. The smallest species of the genus are included in the “Parvidens” group, which includes M. pakaraimae, M. parvidens and M. pinheiroi. Although the monophyly of this group and species relationships are well defined, molecular studies have indicated that M. pinheiroi may represent a species complex, which has never been tested based on morphological analysis. In this study, we present the taxonomic review of M. pinheiroi based on the largest sample ever analyzed of this species. The external and craniodental morphology of 613 specimens of M. parvidens and M. pinheiroi from the northern, eastern, central and southern Brazilian Amazonia and northern Cerrado were examined. Besides, 28 craniodental dimensions were measured from adult specimens to support univariate and multivariate statistical analyses. Our results corroborate the validity of M. parvidens and indicate that M. pinheiroi is a complex formed by three species – M. pinheiroi (s. s.), distributed to the north of the Amazon River, from eastern Venezuela to the state of Amapá in Brazil; M. woodalli, which occurs east of the Xingu river and in the Marajó Island, state of Pará, extending to the east in the states of Tocantins and Maranhão; and a new species that occurs from the left bank of the Madeira River to the left bank of the Xingu River, herein described. Although the great morphometric similarity, species of the M. pinheiroi complex tended to be more different from each other than to M. parvidens in both univariate and multivariate analyses. Morphologically, these species may be positively distinguished by unique combinations of characters, such as dorsal and ventral fur coloration, arrangement of gray based hairs on the venter, supraoccipital shape, development of anterior and posterior portions of the M3 stylar shelf, continuity or not between the preprotocrista and anterior labial cingulum along the anterior margin of the upper molars, development of the metaconule in the upper molars, and number of cusps of the m4 talonid. The present work provides new perspectives for studies based on molecular data in order to test the species hypotheses recognized here and evaluate to what extent the Tapajós, Madeira, and Araguaia-Tocantins rivers actually isolate Marmosops populations. 

Spelaeogammarus uai (Bogidielloidea: Artesiidae): a new troglobitic amphipod from Brazil 

Zootaxa ◽  
2017 ◽  
Vol 4231 (1) ◽  
pp. 38 ◽  
Author(s):  
RAFAELA BASTOS-PEREIRA ◽  
RODRIGO L. FERREIRA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Statistical Approach ◽  
Southeastern Brazil ◽  
Apical Margin ◽  
Multivariate Statistical ◽  
Multivariate Statistical Approach ◽  
Length Width ◽  
A New Species

A new species was recently found in a cave from Southeastern Brazil, in the state of Minas Gerais, which is here described. Considering all the species of the genus, Spelaeogammarus uai sp. nov. is very similar to S. santanensis and S. sanctus, although the new species differs mainly in relation to the number of plumose setae in the apical margin of maxilliped inner plate, number of setae in the anterior margin of gnathopod 1 basis and number of setae in the posterior margin of gnathopod 2 basis. Furthermore, the ratio “length/width” of several articles of the new species is higher than in other species. An identification key of the Spelaeogammarus genus is provided, as well as a complemented multivariate statistical approach of the morphometry of the genus based on a previous work of the genus. 

Sporolithon yoneshigueae sp. nov. (Sporolithales, Corallinophycidae, Rhodophyta), a new rhodolith-forming coralline alga from the southwest Atlantic

Phytotaxa ◽  
2015 ◽  
Vol 224 (2) ◽  
pp. 140 ◽  
Author(s):  
Ricardo G. Bahia ◽  
Gilberto M. Amado-Filho ◽  
Gavin W. Maneveldt ◽  
Walter H. Adey ◽  
Gabriel Johnson ◽  
...  
Keyword(s):  
New Species ◽  
Genetic Divergence ◽  
Pore Diameter ◽  
Molecular Data ◽  
Southeastern Brazil ◽  
Coralline Alga ◽  
Southwest Atlantic ◽  
Alga Species ◽  
Herbarium Collections ◽  
A New Species

The aim of this study was to describe the new rhodolith-forming coralline alga species, Sporolithon yoneshigueae sp. nov., based on both morpho-anatomical and molecular data. Specimens were collected in rhodolith beds between 28 and 66 m depths in northeastern and southeastern Brazil. The new species can be distinguished from all other species of the genus Sporolithon by its wide tetrasporangial compartment pore diameter (35–43 µm) and the correspondingly large number (19–24) of rosette cells surrounding the tetrasporangial compartment pore. Phylogenies inferred from psbA and SSU markers support it as a new species within Sporolithon with interspecific genetic divergence varying from 8.86–10.94 %, and 3.67–4.63%, respectively. Observations from recent gathering and from herbarium collections show that specimens previously designated as Sporolithon mediterraneum in Brazil correspond to Sporolithon yoneshigueae.

A new species of Ischnocnema (Anura: Brachycephalidae) from the mountainous region of Atlantic Forest, southeastern Brazil, with a new phylogeny and diagnose for Ischnocnema parva series

Zootaxa ◽  
2021 ◽  
Vol 5082 (3) ◽  
pp. 201-222
Author(s):  
THIAGO SILVA-SOARES ◽  
RODRIGO BARBOSA FERREIRA ◽  
IAGO SILVA ORNELLAS ◽  
CÁSSIO Z. ZOCCA ◽  
ULISSES CARAMASCHI ◽  
...  
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Molecular Data ◽  
Amphibian Conservation ◽  
Southeastern Brazil ◽  
Antipredator Mechanisms ◽  
Microhabitat Preferences ◽  
New Diagnosis ◽  
A New Species ◽  
Montane Rainforest

We describe a new species of Rain Frog from Brazil’s Atlantic Forest, which harbors high richness, endemism and threatened species of anurans. Ischnocnema crassa sp. nov. is a leaf litter breeder from the montane rainforest of Santa Teresa, state of Espírito Santo, southeastern Brazil. Remarkably, the new species is so far unique amongst Ischnocnema for having moderate hand webbing between fingers. Ischnocnema crassa sp. nov. is the third species belonging to I. parva series and we present a new phylogeny based on molecular data and propose a new diagnosis for the series. We provide field and laboratory observations regarding amplexus, antipredator mechanisms, microhabitat preferences and conservation remarks.  Although Santa Teresa is one of the most sampled areas in Brazil, new species are often discovered. Santa Teresa is a priority for amphibian conservation because it harbors 109 species of anurans (9% of Brazil’s species).  

The genus Zelentia is an amphi-boreal taxon expanded to include three new species from the North Pacific and Atlantic oceans (Gastropoda: Nudibranchia: Trinchesiidae)

Zootaxa ◽  
2018 ◽  
Vol 4482 (2) ◽  
pp. 297 ◽  
Author(s):  
TATIANA KORSHUNOVA ◽  
KARIN FLETCHER ◽  
KENNET LUNDIN ◽  
BERNARD PICTON ◽  
ALEXANDER MARTYNOV
Keyword(s):  
New Species ◽  
Haplotype Network ◽  
Molecular Data ◽  
Sympatric Species ◽  
Morphological Data ◽  
The North ◽  
Northeastern Pacific ◽  
Morphological And Molecular Data ◽  
Pacific Species ◽  
A New Species

The taxonomy of Zelentia Korshunova, Martynov & Picton, 2017, a genus of aeolidacean nudibranchs recently separated from Trinchesia Ihering, 1879, is reviewed. Using previous and novel data, including the defining morphological characters of a supplementary gland inserted into the penis, which is also armed with stylet, it is demonstrated that the genus Zelentia is a well-established amphi-boreal taxon. A phylogenetic tree and haplotype network for species of the genus Zelentia are provided. A new species from the Northeastern Pacific, Zelentia willowsi sp. nov. and a second Northeastern Pacific species, Zelentia nepunicea sp. nov., previously thought to be “Cuthona” pustulata (Alder & Hancock, 1854), are described using morphological and molecular data. A new species from the North Atlantic and sub-Arctic White Sea, Zelentia roginskae sp. nov., is also described using morphological and molecular data. The Northeastern Pacific Zelentia nepunicea sp. nov. and“Cuthona” punicea Millen, 1986, which externally share a similar reddish colouration, are shown to belong to two different families since “Cuthona” punicea possesses a supplementary gland inserted into the vas deferens and an unarmed penis, characters of the genus Cuthonella Bergh, 1884, belonging to the Cuthonellidae family. Despite belonging to different families and having significant internal differences, externally Cuthonella punicea and Zelentia nepunicea sp. nov. appear similar, thus the new sympatric species of Zelentia is given the name Z. nepunicea sp. nov. which means non punicea. To facilitate identification and avoid further confusion we provide a comparative table which encompasses diagnostic morphological data for Northeastern Pacific species of the families Cuthonidae, Cuthonellidae and Trinchesiidae which are externally similar to the described new taxa. 

scholarly journals A new genus and new species of macronyssid mite (Mesostigmata: Gamasina: Macronyssidae) from Brazilian caves including molecular data and key for genera occurring in Brazil

Acarologia ◽  
2021 ◽  
Vol 61 (3) ◽  
pp. 501-526
Author(s):  
Brenda K. Gomes-Almeida ◽  
Almir R. Pepato
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
New Genus ◽  
Large Subunit ◽  
Molecular Data ◽  
Southeastern Brazil ◽  
Sternal Gland ◽  
Dorsal Shield ◽  
Minas Gerais State ◽  
A New Species

A new genus and a new species of macronyssid mites is described based on material collected from caves in Minas Gerais state, Southeastern Brazil, and additional occurrences from caves in Rio de Janeiro (Southeast) and Pará (Eastern Amazon region). The new genus may be distinguished from other Macronyssidae genera by the combination of sternal shield with a distinct X-shaped area; sternal shield bearing three pairs of setae and two pairs of pores; sternal gland absent; anterior spur on coxa II lacking; adults with dorsal shield entire and j and J series complete; adults and protonymphs with setae J5 minute; males with strong-pores on dorsal shield and peritrema short extending from posterior margin of coxae II to the anterior margin of coxae IV. A key for genera occurring in Brazil is provided, as well sequences from the mitochondrial large subunit of ribosome (16S).

Evidence of cryptic speciation in a fossorial reptile: description of a new species of Blanus (Squamata: Amphisbaenia: Blanidae) from the Iberian Peninsula

Zootaxa ◽  
2009 ◽  
Vol 2234 (1) ◽  
pp. 56-68 ◽  
Author(s):  
EVA M. ALBERT ◽  
ADRIÁN FERNÁNDEZ
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Nuclear Dna ◽  
Morphological Differentiation ◽  
Morphological Characters ◽  
Molecular Data ◽  
Cryptic Speciation ◽  
Multivariate Statistical ◽  
Show Evidence ◽  
A New Species

A recent phylogeographic study using mitochondrial and nuclear DNA revealed the presence of two well defined allopatric clades of Blanus cinereus in the Iberian Peninsula. Using both univariate and multivariate statistical analyses, we show evidence of morphological differentiation between the two clades. Despite the lack of visually diagnosable morphological characters, the morphological and molecular data suggest that differentiation between the two clades was significantly enough to prevent in the past gene flow and therefore to warrant a specific status for each of the two clades. We suggest that the constraints of the subterranean life could increase the chances of experiencing cryptic speciation in worm lizards. In order to establish a taxonomic re-arrangement for the Iberian Blanus we designate a lectotype for B. cinereus from populations of central Iberia and describe a new species; Blanus mariae sp. nov. from southwestern regions of the Iberian Peninsula.

Taxonomic review of Sibaria Stål, 1872 (Heteroptera: Pentatomidae: Pentatominae: Carpocorini), with description of a new species

Zootaxa ◽  
2020 ◽  
Vol 4779 (3) ◽  
pp. 391-408
Author(s):  
VERÔNICA KREIN ◽  
FILIPE M. BIANCHI ◽  
DAVID A. RIDER ◽  
JOCELIA GRAZIA
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Data ◽  
Neotropical Region ◽  
Valid Species ◽  
Taxonomic Review ◽  
Internal Genitalia ◽  
Heteroptera Pentatomidae ◽  
Morphological And Molecular Data ◽  
A New Species

Sibaria Stål is a genus of Pentatomidae occurring exclusively in the Neotropical region. Since its description, little information has been added to the knowledge of the taxon. The hypothesis of monophyly of Sibaria was recently supported by a phylogenetic analysis based on morphological and molecular data. The purpose of this study is to provide a review of Sibaria, redescribe the valid species, and describe a new species. The genus includes four species: S. andicola Breddin, S. armata (Dallas), S. englemani Rolston, and S. amazonica sp. nov.. Diagnoses, macrophotographs (habitus, external and internal genitalia), an identification key, and distribution records of the species are also provided. 

A new species of butterfly (Lepidoptera: Nymphalidae) from the highlands of Southeastern Brazil

Zootaxa ◽  
2020 ◽  
Vol 4819 (1) ◽  
pp. 128-142
Author(s):  
EDUARDO P. BARBOSA ◽  
TAMARA M. C. AGUIAR ◽  
AUGUSTO H. B. ROSA ◽  
THAMARA ZACCA ◽  
ANDRÉ V. L. FREITAS
Keyword(s):  
New Species ◽  
High Altitude ◽  
Molecular Analysis ◽  
Molecular Data ◽  
Systematic Position ◽  
Southeastern Brazil ◽  
Immature Stages ◽  
Male And Female ◽  
Wet Grasslands ◽  
A New Species

A new species of the butterfly satyrine subtribe Euptychiina is described: Carminda surpresa sp. nov. This species is apparently restricted to high altitude wet grasslands in southeastern Brazil. The description is based on morphological features, mainly from the wings, and male and female genitalia, and molecular data were also obtained and are used to validate the new species. Information about the geographic distribution, habitat and immature stages morphology is also provided. The systematic position of C. surpresa sp. nov. is discussed based on a molecular analysis which includes all described species of Carminda in addition to other species of Satyrinae.

A new species of Aphanoblastella Kritsky, Mendoza-Franco and Scholz, 2000 (Monogenea, Dactylogyridae) parasitic on heptapterid catfish (Siluriformes) in the Neotropical region

2018 ◽  
Vol 63 (4) ◽  
pp. 772-780 ◽  
Author(s):  
Fabio H. Yamada ◽  
Aline A. Acosta ◽  
Priscilla de O. F. Yamada ◽  
Tomáš Scholz ◽  
Reinaldo J. da Silva
Keyword(s):  
New Species ◽  
Gene Sequence ◽  
Male Copulatory Organ ◽  
Accessory Piece ◽  
Copulatory Organ ◽  
Molecular Data ◽  
Neotropical Region ◽  
Fish Host ◽  
Southeastern Brazil ◽  
A New Species

Abstract Aphanoblastella magna n. sp. is described from the gills of the heptapterid catfish Pimelodella avanhandavae Eigenmann, 1917 in southeastern Brazil (Paraná River Basin). This new species most closely resembles Aphanoblastella chagresii Mendoza-Franco, Aguirre-Macedo and Vidal-Martínez, 2007 described from a congeneric fish host in Panama, but can be distinguished by the shape of the accessory piece and shape and size of the ventral and dorsal bars. From the other species of the genus, A. magna n. sp. differs mainly in the shape of the male copulatory organ (MCO), which is sinuous, versus spirally coiled in other species of the genus, except for A. travassosi (Price, 1938), and by the accessory piece which resembles a ‘shoehorn’. Aphanoblastella magna n. sp. is the seventh species of the genus and the first dactylogyrid described from P. avanhandavae. A partial 28S rDNA gene sequence of the new species is also provided; it forms a monophyletic clade with two congeners for which molecular data are available.

Taxonomic review of Aegla marginata Bond-Buckup & Buckup, 1994 (Decapoda, Anomura, Aeglidae) with description of a new species

Zootaxa ◽  
2017 ◽  
Vol 4323 (4) ◽  
pp. 519 ◽  
Author(s):  
JULIANA CRISTINA BERTACINI MORAES ◽  
MARCOS TAVARES ◽  
SÉRGIO LUIZ DE SIQUEIRA BUENO
Keyword(s):  
New Species ◽  
Molecular Data ◽  
Sao Paulo ◽  
Type Locality ◽  
Morphological Data ◽  
Paulo State ◽  
Taxonomic Review ◽  
Data Support ◽  
A New Species ◽  
Previous Assumption

The taxonomy of Aegla marginata Bond-Buckup & Buckup, 1994 from three disjunct hydrographic basins is revised using morphological data. Aegla marginata is redescribed from the type-locality (Morretes, Paraná State, Brazil) and a new species, Aegla quilombola n. sp., is described (from Intervales State Park, São Paulo State, Brazil). Both species are illustrated in detail. Morphological data support and confirm a previous assumption based on molecular data of a paraphyletic relationship between populations previously known as Aegla marginata. 

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