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. 

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 ◽  
2017 ◽  
Vol 4294 (1) ◽  
pp. 71 ◽  
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. 

A new species of Phylloicus Müller, 1880 (Trichoptera: Calamoceratidae), from southeastern Brazil, including descriptions of larval and pupal stages

Zootaxa ◽  
2011 ◽  
Vol 2748 (1) ◽  
pp. 38 ◽  
Author(s):  
FABIO B. QUINTEIRO ◽  
ADOLFO R. CALOR ◽  
CLAUDIO G. FROEHLICH
Keyword(s):  
New Species ◽  
Central America ◽  
Posterior Margin ◽  
Southeastern Brazil ◽  
Diagnostic Characters ◽  
A New Species

The cosmopolitan family Calamoceratidae Ulmer, 1906, has 8 living genera, among them Phylloicus Müller, 1880, with species distributed from South to Central America. This genus is characterized by its dark-colored adults (brown to black) with diurnal to crepuscular habits. In this paper, the adults, pupae, and larvae of Phylloicus camargoi n. sp. are described and illustrated. The new species is easily diagnosed by male tergum X bearing a short, digitate, setose, basodorsal process; 2 short, digitate, hairless, lateral processes; and 2 pairs of very short processes on the posterior margin: a pair of digitate, hairless, posterolateral processes, and a pair of posteromesal processes. Additional diagnostic characters are the presence of 3 color bands on the forewings, 2 golden longitudinal bands and a white transversal one.

Acrochordonichthys gyrinus, a new species of akysid catfish (Teleostei: Siluriformes) from Thailand

Zootaxa ◽  
2003 ◽  
Vol 183 (1) ◽  
pp. 1 ◽  
Author(s):  
CHAVALIT VIDTHAYANON ◽  
HEOK HEE NG
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Species Group ◽  
Unique Combination ◽  
Maximum Width ◽  
Body Depth ◽  
Adipose Fin ◽  
Chao Phraya River ◽  
A New Species

Acrochordonichthys gyrinus, a new species of akysid catfish belonging to the A. ischnosoma species group, is described from the Chao Phraya River drainage in Thailand. It can be distinguished from congeners by a concave posterior margin of the pectoral fin and the unique combination of the following characteristics: head depth 9.8–11.4% SL; dorsal to adipose distance 7.4–8.6% SL; body depth at anus 8.3–10.5% SL; maximum width of humeral process 16.3% its length; and anterior margin of anal fin and posterior margin of adipose fin straight. This species represents the northernmost distribution of the genus.

The presence of Homoeoneuria s.s. (Ephemeroptera: Oligoneuriidae) in South America with the description of a new species

Zootaxa ◽  
2009 ◽  
Vol 2146 (1) ◽  
pp. 53-60 ◽  
Author(s):  
F. F. SALLES ◽  
C. N. FRANCISCHETTI ◽  
E. D. G. SOARES
Keyword(s):  
New Species ◽  
South America ◽  
Anterior Margin ◽  
Adult Stage ◽  
Color Pattern ◽  
The Other ◽  
Southeastern Brazil ◽  
Compound Eyes ◽  
Stage 1 ◽  
A New Species

In the present work a new species of Homoeoneuria is described based on nymphs and adults from Southeastern Brazil. Based on cladistics, the new species belongs to the subgenus Homoeoneuria.s.s. Homoeoneuria (H). watu sp. n., besides being the second species of the genus reported from South America, is the first representative of the subgenus from the region. The new species can be distinguished from the other described species of the genus by the following combination of characters: In the adult stage, (1) pronotum with prominent posteromedian pale yellow spot almost reaching anterior margin; (2) abdominal color pattern; (3) shape of penes. In the nymph, (1) head heavily washed with brownish-orange between compound eyes and ocelli; (2) antennal pedicels with short, thick setae; (3) small paired tubercles present on vertex and anterior margin of pronotum; (4) galea-lacinia of maxillae with submarginal row of 20–21 long, spinous setae; (5) abdominal color pattern. Comments on the biology of the new species are also provided.

New species and new report of Hyalella S. I. Smith, 1874 (Crustacea: Amphipoda: Dogielinotidae) from Minas Gerais state, Southeastern Brazil

Zootaxa ◽  
2012 ◽  
Vol 3350 (1) ◽  
pp. 58 ◽  
Author(s):  
RAFAELA BASTOS-PEREIRA ◽  
ALESSANDRA ANGÉLICA DE PÁDUA BUENO
Keyword(s):  
New Species ◽  
Species Identification ◽  
Posterior Margin ◽  
Minas Gerais ◽  
The State ◽  
Southeastern Brazil ◽  
Diverse Group ◽  
Minas Gerais State ◽  
A New Species ◽  
Janeiro State

At present, 13 species of Hyalella are recorded from Brazilian hydrographic basins. A new species of the genus was foundin the municipality of Arcos, Minas Gerais state and it is described here. Curved seta on inner ramus of male uropod 1,posterior margin of gnathopod 2 propodus shorter than palm, telson longer than wide are some of the diagnostic charatctersof this new species. The articles of maxillipod palp and propodus of gnathopod 2 are elongated as observed in H.longistila,but the new species differs from it because of the curved seta on uropod 1. Despite being large and diverse group, Hyalellais represented only by two species in the state of Minas Gerais (Southeastern Brazil), H. warminig and H. gracilicornis.The distribution of H. longistila, previously recorded in Rio de Janeiro state, was extended to Minas Gerais state. Thiswork, therefore, contributes for the knowledge of Amphipoda fauna from Brazil, describing a new species and providing a key to the species identification. From this work, the number of Hyalella species found in Brazil to 14.

scholarly journals A new species of Amblyseius Berlese (Acari: Phytoseiidae) from Brazil

Zootaxa ◽  
2007 ◽  
Vol 1445 (1) ◽  
pp. 65-68 ◽  
Author(s):  
PETERSON R. DEMITE ◽  
ANTONIO C. LOFEGO ◽  
REINALDO J.F. FERES
Keyword(s):  
New Species ◽  
Deciduous Forest ◽  
Neotropical Region ◽  
Species Group ◽  
Southeastern Brazil ◽  
Width Ratio ◽  
Phytoseiid Mites ◽  
Protected Natural Area ◽  
Length Width ◽  
A New Species

Phytoseiid mites have received considerable world wide attention because of their potential as natural enemies of phytophagous mites (McMurtry, 1984). The Amblyseius obtusus group Chant  is the largest species group in the genus Amblyseius. Chant & McMurtry (2004) divided the group into seven subgroups based on spermathecal morphology. The andersoni subgroup of Chant & McMurtry, 2004 is characterized by a spermatheca with the calyx dish-, cup-, bell-, or V-shaped, with the length/width ratio at the mid-point of the calyx < 3:1. A total of 24 species of the andersoni subgroup are known from the Neotropical region, 13 of these from Brazil (Moraes et al., 2004). A new species of this subgroup, Amblyseius paulofariensis sp. nov., is described and illustrated in this paper, from specimens collected in the semi-deciduous forest area of “Estação Ecológica de Paulo de Faria”, a protected natural area in the State of São Paulo, southeastern Brazil, on three species of Euphorbiaceae: Acalypha diversifolia Jacq., Actinostemon communis (Müll. Arg.) and Alchornea glandulosa Poepp. & Endl.. In the region where this mites was found, the climate is of the type Cwa-Aw of Köppen, with two distinct seasons: one wet, from October to March, and the other dry, from April to September. The annual mean temperature is 25°C, with a maximum mean of 30°C and a minimum mean of 20°C (Barcha & Arid, 1971; Arid & Barcha, 1973).

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. 

A new Species of Lygus infesting Potatoes in Java (Rhynchota, Capsidae)

1923 ◽  
Vol 13 (4) ◽  
pp. 447-447
Author(s):  
W. E. China
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Pale Yellow ◽  
The Third ◽  
Orange Yellow ◽  
Brownish Black ◽  
Lateral Margins ◽  
Surrounding Areas ◽  
A New Species

Head 0·83 mm. long, shiny orange-yellow, with the clypeus and the adjoining portion of the frons shiny black. Eyes black, prominent, extending laterally beyond the anterior lateral margins of the pronotum. Rostrum brownish black, extending to, but not surpassing, the posterior coxae; lengths of the joints: first 0·53 mm., second 0·76 mm., third 0·4 mm., and fourth 0·6 mm. Antennae brownish black, the third and fourth joints somewhat paler; first joint slightly incrassated, length 0·83 mm., second 2·0 mm., third 1·83 mm., fourth 1 mm. Pronotum shiny orange-yellow, posteriorly somewhat suffered with dark brown; length in middle 1·4 mm., breadth at anterior margin 0·8 mm., at posterior margin 2·0 mm.; sides straight, posterior margin moderately convex. Scutellum shiny black, finely rugosely punctate and regularly covered with pale depressed hairs; length in the middle 1·3 mm. Corium and cuneus similar in colour and pilosity to the scutellum; membrane dark smoky brown, veins shiny black, passing the apex of the abdomen. Sternum: mesostethium and metastethium black, the metastethial orifices and the surrounding areas very pale yellow: undersides of abdomen shiny black, covered with very fine pale hairs. Legs: coaxae blackish brown; femora dirty orange-yellow, suffused at base and apex with brown; tibiae dark brown, armed with fine black spines; tarsi black, strongly pilose.

scholarly journals A new nektaspid euarthropod from the Lower Ordovician strata of Morocco

2020 ◽  
pp. 1-9 ◽  
Author(s):  
Francesc Pérez-Peris ◽  
Lukáš Laibl ◽  
Lorenzo Lustri ◽  
Pierre Gueriau ◽  
Jonathan B Antcliffe ◽  
...  
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Anterior Margin ◽  
Rare Occurrence ◽  
Marine Communities ◽  
Lower Ordovician ◽  
Low Diversity ◽  
A New Species ◽  
Digestive Glands

Abstract Nektaspids are Palaeozoic non-biomineralized euarthropods that were at the peak of their diversity during the Cambrian Period. Post-Cambrian nektaspids are a low-diversity group with only a few species described so far. Here we describe Tariccoia tazagurtensis, a new species of small-bodied nektaspid from the Lower Ordovician Fezouata Shale of Morocco. The new species differs from the type (and only other known) species from the Ordovician strata of Sardinia (Italy), Tariccoia arrusensis, in possessing more pointed genal angles, a cephalon with marginal rim, a pygidium with anterior margin curved forwards, a rounded posterior margin, and longer and more curved thoracic tergites. The two specimens of T. tazagurtensis sp. nov. show remains of digestive glands that are comparable to those seen in the Cambrian nektaspid Naraoia. The rare occurrence of T. tazagurtensis sp. nov. in the Fezouata Shale and the distribution of other liwiids suggest that these liwiids were originally minor members of open-marine communities during the Cambrian Period, and migrated into colder brackish or restricted seas during the Ordovician Period.

A new species of Mydrosoma Smith with a key to Brazilian species of the genus and a discussion on the classification of the Dissoglottini (Hymenoptera: Colletidae)

Zootaxa ◽  
2009 ◽  
Vol 2105 (1) ◽  
pp. 32-42 ◽  
Author(s):  
FERNANDO A. SILVEIRA ◽  
RODERIC B. MARTINES
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Anterior Margin ◽  
Minas Gerais ◽  
The State ◽  
Southeastern Brazil ◽  
Predominantly Black ◽  
Transverse Band ◽  
A New Species

Mydrosoma sabarensis sp. n. is described from the Atlantic Forest Domain of southeastern Brazil. Two females and one male were collected on flowers of Serjania sp. (Sapindaceae) in the state of Minas Gerais. An additional female is from Domingos Martins, Espírito Santo state. The female M. sabarensis is about 12 mm long, robust, with predominantly black pubescence but with a wide transverse band of white hairs on the anterior margin of the mesoscutum and yellow lateral bands on T2–T4. The male, about 11 mm long, has pale-fulvous pilosity on the mesosoma and marginal bands on T1–T4, with terga blackish pubescent basally. A key to the five species of Mydrosoma known to occur in Brazil is presented and the classification of the Dissoglottini is discussed. Aspects of foraging and of possible mimicry are also discussed.

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