A new species of terrestrial planarian (Platyhelminthes: Tricladida: Terricola) from South Brazil

Carbayo, Fernando; Leal-Zanchet, Ana María

doi:10.1590/s1519-69842001000300013

Cited by 16 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this alignment we included individuals belonging to the new species described here ( Obama nungara sp. nov.), individuals of O. marmorata and other known species [ O. anthropophila Amaral, Leal‐Zanchet & Carbayo, 2015 (Álvarez‐Presas et al ., ), O. burmeisteri (Schultze & Müller, ) , O. carinata (Riester, ), O. decidualis Amaral & Leal‐Zanchet (Álvarez‐Presas et al ., ), O. josefi (Carbayo & Leal‐Zanchet, ), O. ladislavii (Graff, )]. The alignment of the Cox1 dataset for the GMYC analysis has a length of 822 bp and includes 59 Obama sequences, all shown for Cox1 in Table except Lago‐Barcia et al .…”

Section: Resultsmentioning

confidence: 99%

The true identity ofObama(Platyhelminthes: Geoplanidae) flatworm spreading across Europe

et al. 2016

View full text Add to dashboard Cite

Since 2008 there have been many records in Europe (British Isles, Spain, France, Italy) of a large terrestrial planarian morphologically very similar to the Brazilian species Obama marmorata. Sequences of mitochondrial (Cox1) and nuclear (18S, 28S, ITS-1 and EF) genes from European specimens and some from Brazil indicate that they belong to a species different from that of other specimens also collected in Brazil. Moreover, the phylogenetic results show that they are not sister-species. Histological sections of both Brazilian and European specimens reveal subtle morphological differences between the two species. Obama marmorata is confined to Brazil, and the second, herein described new species, Obama nungara sp. nov., is found in Brazil and Europe. These cryptic species may be syntopic in areas in Brazil. The new species occurs in human-modified environments both in Brazil and in Europe. We also conclude that the specimens from Spain and Argentina identified previously as Obama marmorata belong to the new species.

show abstract

Section: Resultsmentioning

confidence: 99%

The true identity ofObama(Platyhelminthes: Geoplanidae) flatworm spreading across Europe

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The systematics of the family Geoplanidae (Stimpson) is still poorly resolved and there are relatively few neotropical species described in the literature. This is illustrated by the fact, that from the type locality of the species herein described, 40 species have been registered but only seven have been described in the literature Carbayo 2000, 2001;Carbayo and Leal-Zanchet 2001).…”

Section: Introductionmentioning

confidence: 96%

Two new genera of geoplaninid land planarians (Platyhelminthes : Tricladida : Terricola) of Brazil in the light of cephalic specialisations

Carbayo¹,

Leal-Zanchet²

2003

Invert. Systematics

Self Cite

View full text Add to dashboard Cite

Two new genera of geoplaninid land planarians are described. Cephalic specialisations, mainly external morphology and musculature development, partially define each genus. Cephaloflexa, gen. nov. shows some peculiar characteristics, such as a gradual narrowing of the anterior third of the body and an upwards roll of the anterior tip, the absence of eyes and sensory pits on the apex, and the existence of a retractor muscle derived from the ventral cutaneous longitudinal musculature. Geoplana bergi Graff, 1899 is allocated to Cephaloflexa and is designated as the type species. The ventral cutaneous longitudinal muscles of Supramontana, gen. nov. (monotypic), are partially sunk into the mesenchyme, thus constituting a cephalic retractor muscle. A new species of each genus is also described. The external morphology and anatomy of the cephalic region of the new genera and of Geoplana Stimpson, 1857, Choeradoplana Graff, 1896 and Issoca C. G. Froehlich, 1955 are analysed. Emendations to the diagnoses of Issoca and Choeradoplana are proposed based on cephalic differentiations. Spanish abstractSe decriben Cephaloflexa, gen. nov. y Supramontana, gen. nov., dos nuevos géneros de planarias terrrestres de la subfamilia Geoplaninae, ambos caracterizados por especializaciones cefálicas, como la morfología externa y el desarrollo muscular. Se describe una nueva especie de cada género. Se transfiere Geoplana bergi Graff, 1899 para el género Cephaloflexa y se la designa especie tipo. Cephaloflexa, gen. nov. presenta características peculiares, como el tercio anterior del cuerpo muy fino, región anterior enrollada hacia el dorso, ausencia de ojos y fosetas sensoriales en el ápice anterior del cuerpo, y un músculo retractor derivado de la musculatura subcutánea longitudinal ventral. Supramontana, gen. nov., género monotípico, tiene parte de la musculatura subcutánea longitudinal ventral hundida en el mesénquima y transformada en la región anterior en un músculo retractor cefálico. Se analiza la morfología externa y la anatomía de la región cefálica de Geoplana Stimpson, 1857, Choeradoplana Graff, 1896 e Issoca Froehlich, 1955 y se proponen enmiendas a las diagnosis de Choeradoplana e Issoca basadas en las diferenciaciones cefálicas.

show abstract

“…n. Obama itatiayana (Schirch, ) comb. n. Obama josefi (Carbayo & Leal‐Zanchet, )* Obama ladislavii (von Graff, )* comb. n. Obama ladislavii (sensu Froehlich, )* comb.…”

unclassified

Molecular phylogeny of Geoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions

et al. 2013

View full text Add to dashboard Cite

Despite likely being the most diverse group within the Tricladida, the systematics of land planarians (Geoplanidae) has received minor attention. The most species‐rich ingroup, the subfamily Geoplaninae, is restricted to the Neotropics. The systematics of Geoplaninae remains uncertain. Unique features supporting the genera are scanty; moreover, parts of the known species have been poorly described, making comparative studies difficult. Likewise the evolutionary relationships among land planarians remain insufficiently understood. In the present study, a phylogenetic hypothesis for selected taxa of Geoplaninae based on the molecular data is presented and discussed in the light of morphological features. Our phylogenetic inference is based on the fragments of three nuclear regions (18S, 28S rDNA and EF‐1α) and a mitochondrial marker (cytochrome oxidase I) for which we considered three optimality criteria (parsimony, maximum likelihood and Bayesian inference). Although our data provide little support for most basal nodes, our phylogenetic trees show a number of well‐supported clades, unveiling morphologically homogeneous groups. According to these results, we propose to separate Geoplana into Barreirana (formerly considered a subgenus), Cratera gen. n., Imbira gen. n., Matuxia gen. n., Obama gen. n. and Paraba gen. n., emend the diagnoses of Barreirana, Geoplana, Notogynaphallia, Pasipha and Xerapoa and review the classification of the species within these genera. For Geoplana goetschi sensu Marcus, (1951), a new name is proposed.

show abstract

A new species of terrestrial planarian (Platyhelminthes: Tricladida: Terricola) from South Brazil

Cited by 16 publications

References 4 publications

The true identity ofObama(Platyhelminthes: Geoplanidae) flatworm spreading across Europe

The true identity ofObama(Platyhelminthes: Geoplanidae) flatworm spreading across Europe

Two new genera of geoplaninid land planarians (Platyhelminthes : Tricladida : Terricola) of Brazil in the light of cephalic specialisations

Molecular phylogeny of Geoplaninae (Platyhelminthes) challenges current classification: proposal of taxonomic actions

Contact Info

Product

Resources

About