scholarly journals Sexual dimorphism in Amphisbaena nigricauda (Reptilia, Squamata, Amphisbaenidae) from Southeastern Brazil

2014 ◽  
Vol 104 (3) ◽  
pp. 299-307 ◽  
Author(s):  
Francco A. N. de Souza e Lima ◽  
João Luiz Gasparini ◽  
Antonio de Padua Almeida ◽  
Marcos V. C. Vital ◽  
Tamí Mott

Amphisbaena nigricauda Gans, 1966 is a small, poorly known amphisbaenid endemic to the restinga of the states of Espírito Santo and Bahia, Brazil. We analyze 178 specimens collected in Vitória municipality, state of Espírito Santo, Brazil, to investigate whether this species show sexual dimorphism in pre-cloacal pores and in morphological characters. Sex was determined by a ventral incision and direct inspection of gonads. A PCA analysis was performed to generate a general body size measurement. A T test and the non-parametric Mann-Whitney test were used to assess whether this species show sexual dimorphism on five morphometric and five meristic characters, respectively. Sex could not be determined in 36 specimens because they were mutilated in the posterior portion of their bodies. The diagnosis of the species is redefined based on this sample size: the smallest number of body annuli changes from 222 to 192, the number of dorsal and ventral segments in an annulus in the middle of the body changes to 9-11/13-16 (instead of 10/16), and the autotomic tail annulus lies between annulus 7-10 (instead of 6-9). The number of tail annuli remained within the known range of variation of the species (19-24). None of the 80 females analyzed showed pre-cloacal pores, whereas within males 59 out of 62 specimens displayed four and two specimens displayed five pre-cloacal pores. A single male did not possess pre-cloacal pores, but showed irregular scales on its cloacal region. Sex-based difference based on presence or absence of pre-cloacal pores as well as males with wider head was seen in other Neotropical amphisbaenids. However, a pattern of body size differences between males and females has not been identified so far in the few amphisbaenid species studied in this regard. Further studies on this taxonomic group are still needed to elucidate the existence of general patterns of sexual dimorphism and to identify the selective pressures driving these patterns.

2019 ◽  
Vol 44 (4) ◽  
pp. 832-837
Author(s):  
Rafaela Alves Pereira-Silva ◽  
Sarah Maria Athiê-Souza ◽  
André Laurênio de Melo ◽  
W. Scott Armbruster

Abstract—A new species of Dalechampia from southeastern Brazil, belonging to Dalechampia sect. Dioscoreifoliae, is described and illustrated here. Dalechampia margarethiae is a twining vine occurring exclusively in Espírito Santo state. Its pseudanthia are similar to those of D. peckoltiana and D. pentaphylla, but D. margarethiae differs in a set of important characters, including having cylindrical, down-curved style tips, staminate flowers at anthesis having unreflexed sepals with stamens born on unelongated columns, whitish floral resin, and simple, entire, cordate leaves.


Zootaxa ◽  
2021 ◽  
Vol 5068 (4) ◽  
pp. 517-532
Author(s):  
DIEGO ALMEIDA-SILVA ◽  
THIAGO SILVA-SOARES ◽  
MIGUEL TREFAUT RODRIGUES ◽  
VANESSA KRUTH VERDADE

We describe a new species of dull-colored flea-toad, genus Brachycephalus, from the Atlantic Forest of Caparaó mountains in southeastern Brazil. The new species is characterized by its diminutive size, “leptodactyliform” body, brownish color with an inverted V-shaped dark mark on dorsum, skin smooth, hyperossification and dorsal shield absent, linea masculinea absent, Fingers I and IV vestigial, Toe I externally absent, Toe II reduced but functional, Toes III and IV with pointed tips, Toe V vestigial, and ventral color uniformly brown. It is a leaf litter dweller, known only from type locality in the humid forests on the eastern slopes of Parque Nacional do Caparaó mountains, a protected area in the states of Espírito Santo and Minas Gerais, southeastern Brazil. It is the third flea-toad occurring in the state of Espírito Santo recovered as sister to all other Brachycephalus distributed from the state of São Paulo northward in the Atlantic Forest.  


Phytotaxa ◽  
2015 ◽  
Vol 224 (3) ◽  
pp. 291 ◽  
Author(s):  
Luiz Armando De Araújo Góes-Neto ◽  
Gustavo Heringer ◽  
Alexandre Salino

 A species of Selaginella from Parque Nacional do Caparaó, in Espírito Santo State, southeastern Brazil, is described as new to the science: Selaginella salinoi grows on rocks in Atlantic Rainforest vegetation at ca. 1200 m. The description includes photos of live plants and, scanning electron micrographs.


Check List ◽  
2014 ◽  
Vol 10 (2) ◽  
pp. 411-413 ◽  
Author(s):  
João Paulo Maires Hoppe ◽  
Mariana Brandão Simões ◽  
Vinícius Teixeira Pimenta ◽  
Narcisa Imaculada Brant Moreira ◽  
Karina Miranda Marinho ◽  
...  

Check List ◽  
2010 ◽  
Vol 6 (4) ◽  
pp. 481 ◽  
Author(s):  
Juliana Peres ◽  
José Eduardo Simon ◽  
Denise S. Nascimento ◽  
Renato Neves Feio

We provide the first record of Leptodactylus cupreus out of its type locality, as well the first record of this species in the State of Espírito Santo, southeastern Brazil. The record of Leptodactylus cupreus from municipality Santa Teresa extends in approximately 220 km to the northeastern of its geographic distribution and establishes the inferior limit of 800 m in its altitudinal distribution in the Serra da Mantiqueira.


Zootaxa ◽  
2021 ◽  
Vol 4948 (2) ◽  
pp. 275-286
Author(s):  
RODOLFO CORRÊA DE BARROS ◽  
ROSANA MOREIRA DA ROCHA

Two new species of the genus Styela are described, with very rare characteristics in this genus: both are shallow-water and tropical, with more than two gonads in each side of the body. Styela panamensis sp. nov. is described from specimens collected in Bocas del Toro, Atlantic coast of Panama, and Styela multicarpa sp. nov. from specimens collected in Espírito Santo, Brazil and Margarita Island, Venezuela. They are probably native to the south Caribbean and S. multicarpa sp. nov. is introduced in Brazil. 


Zootaxa ◽  
2021 ◽  
Vol 5076 (1) ◽  
pp. 7-20
Author(s):  
THAYNA DA SILVA RAYMUNDO ◽  
TAÍS BARBOSA ALMEIDA ◽  
JEANE M. C. DO NASCIMENTO ◽  
FREDERICO FALCÃO SALLES

Based on material collected during the past 10 years in the State of Espírito Santo and adjacent areas in Minas Gerais, Southeastern Brazil, we identified three species of the genus Thraulodes: T. itatiajanus Traver & Edmunds, for which we present new records and description of the female imago; T. luisae Souto, Da-Silva & Nessimian, first recorded for the state and for which we describe the nymphal stage; and T. alegre sp. nov., described based on male and female imago. The main diagnostic characteristics of the new species are: color of abdominal terga I–VI whitish translucent, terga II–VI with subrectangular dark brown mark near posterior margin and with midway spot; styliger plate triangular and whitish; penes light yellow, with lateral pouch and penes spines long and tapered, with robust bases.  


2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Jane C. F. Oliveira ◽  
Juliane Pereira-Ribeiro ◽  
Arthur Favalessa ◽  
Carlos Frederico D. Rocha

Zootaxa ◽  
2006 ◽  
Vol 1334 (1) ◽  
pp. 1 ◽  
Author(s):  
ANTONIO DE PADUA ALMEIDA ◽  
ARIADNE ANGULO

Adults and tadpoles of a new species of the genus Leptodactylus are described from southeastern Brazil. Leptodactylus thomei sp.nov. can be found amidst the leaf litter within cocoa plantations along the northern coastal region of the state of Espírito Santo. It can be distinguished from other species of the Leptodactylus marmoratus group by its advertisement call, which is described, together with agonistic calls, and compared to advertisement calls of other species of the group that occur in southern and southeastern Brazil. The systematics of associated populations is discussed.


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