scholarly journals Morphological and molecular characterization of a new species of Atlantic stalked barnacle (Scalpelliformes: Pollicipedidae) from the Cape Verde Islands

2011 ◽  
Vol 91 (7) ◽  
pp. 1537-1545 ◽  
Author(s):  
Javier Quinteiro ◽  
Jorge Rodríguez-Castro ◽  
Pedro López ◽  
Luis F. López-Jurado ◽  
Nieves González-Henríquez ◽  
...  
Keyword(s):  
New Species ◽  
Charles Darwin ◽  
Taxonomic Status ◽  
Molecular Data ◽  
Cape Verde ◽  
Eastern Pacific ◽  
Cape Verde Islands ◽  
The North ◽  
North Eastern ◽  
Central Eastern

The taxonomy of pedunculate cirripedes belonging to the genus Pollicipes has essentially remained unchanged since Charles Darwin described them in his exhaustive work on the Cirripedia. This genus includes three species of stalked barnacles: Pollicipes pollicipes in the north-eastern Atlantic, P. polymerus in the north-eastern Pacific and P. elegans in the central-eastern Pacific. However, a population genetics analysis of P. pollicipes suggested the presence of a putative cryptic species collected from the Cape Verde Islands in the central-eastern Atlantic. This study examines the morphology of these genetically divergent specimens and compares them with that of representative Atlantic samples of the biogeographically closely related P. pollicipes and with the poorly described P. elegans. Molecular data, including mitochondrial COX1 and nuclear ribosomal interspaces sequences, were obtained for all species of the genus Pollicipes. Morphological distinctiveness, diagnostic characters, congruent divergence level and monophyletic clustering, at both nuclear and mitochondrial loci support the taxonomic status of this new species, Pollicipes darwini.

scholarly journals On the taxonomic status of Holothuria (Holothuria) tubulosa (s.s.) from the Algerian coast with the description of a new Mediterranean species, Holothuria (Holothuria) algeriensis n. sp. (Echinodermata: Holothuroidea: Holothuriidae)

Zootaxa ◽  
2021 ◽  
Vol 4981 (1) ◽  
pp. 89-106
Author(s):  
KARIM MEZALI ◽  
AHMED S. THANDAR ◽  
IHCENE KHODJA
Keyword(s):  
New Species ◽  
Discriminant Analysis ◽  
Linear Discriminant Analysis ◽  
Taxonomic Status ◽  
Mediterranean Species ◽  
Linear Discriminant ◽  
The North ◽  
North Eastern ◽  
Algerian Coast ◽  
A New Species

In this study we redescribe the taxonomy of some holothuriid species collected from different localities of the Algerian coastal waters. Morphological (anatomical and endoskeletal) and previous molecular studies show the presence of two distinct morphotypes of Holothuria (Holothuria) tubulosa “A” & “B”. Morphotype “A” corresponds to the classical Holothuria (Holothuria) tubulosa Gmelin 1791, described by Koehler (1921) and hereafter referred to as H. (H.) tubulosa (s.s.), while morphotype “B”, we believe, represents a new species, herein named H. (Holothuria) algeriensis n. sp. with characteristics significantly different from those of Holothuria (H.) tubulosa (s.s.). Both morphology and statistical analysis (Linear Discriminant Analysis) confirm significant differences between these two morphotypes. To visualize these differences, measurements made on ossicles of Holothuria (H.) tubulosa (s.s.) and Holothuria (H.) algeriensis n. sp. were compared with other species present in our collections, including the north-eastern Atlantic and Mediterranean Holothuria (Roweothuria) arguinensis Koehler & Vaney, 1906, recently recorded from Algerian waters, the Mediterranean Holothuria (Roweothuria) poli Delle Chiaje, 1824 and Holothuria (Holothuria) stellati Delle Chiaje, 1824. We conclude that the two morphotypes of H. (H.) tubulosa are significantly different to warrant the recognition of a new species, H. (H.) algeriensis n. sp. and the linear discriminant analysis (LDA) of the five species demonstrate this. 

A new fossil frog crab (Brachyura, Raninoidea) from the Paleogene of northeastern Pacific

2020 ◽  
Vol 298 (1) ◽  
pp. 87-101
Author(s):  
Torrey Nyborg ◽  
Giovanni Pasini ◽  
Alessandro Garassino ◽  
Barry W.M. van Bakel ◽  
Francisco J. Vega ◽  
...  
Keyword(s):  
British Columbia ◽  
New Species ◽  
New Genus ◽  
Washington State ◽  
Eastern Pacific ◽  
The North ◽  
North Eastern ◽  
Two New Species ◽  
Northeastern Pacific ◽  
Upper Paleogene

One new genus and two new species of fossil frog crabs from the Eocene to Oligocene deposits of Washington State (USA) and Vancouver Island (British Columbia, Canada) of the north-eastern Pacific are described, based upon several well- preserved specimens. The studied specimens are herein described as Amphoranina blandi n. gen., n. sp. and A. multispinata n. gen, n. sp. (Raninidae De Haan, 1839) respectively. Amphoranina n. gen. appears to be endemic to the middle to upper Paleogene of the northeastern Pacific.

Review of Cape Verde Pselactus Broun, 1886 (Coleoptera: Curculionidae: Cossoninae) with description of a new species, larvae and notes on biology

Zootaxa ◽  
2017 ◽  
Vol 4317 (2) ◽  
pp. 225 ◽  
Author(s):  
JIŘÍ SKUHROVEC ◽  
PETER HLAVÁČ ◽  
JAN BATELKA
Keyword(s):  
New Species ◽  
Short Note ◽  
Systematic Position ◽  
Cape Verde ◽  
Immature Stages ◽  
Larval Morphology ◽  
Cape Verde Islands ◽  
Current State ◽  
A New Species

The genus Pselactus in the Cape Verde Islands is reviewed. Pselactus obesulus (Wollaston, 1867) from São Vicente is redescribed and P. strakai sp. nov. from São Nicolau is described. Both species are diagnosed and illustrated; their larvae are described, larval morphology is discussed and the current state of knowledge about immature stages of Cossoninae is summarized. The systematic position of the genus within Onycholipini is reviewed, and the placement of genus in Cossoninae is discussed. A short note on biogeography of Pselactus is provided. 

scholarly journals Gracilaria phuquocensis sp. nov., a new flattened Gracilaria species (Gracilariales, Rhodophyta), previously recognized as G. mammillaris, from the southern coast of Vietnam

2020 ◽  
Author(s):  
HN Le ◽  
N Muangmai ◽  
S Kheauthong ◽  
Z Sun ◽  
Giuseppe Zuccarello
Keyword(s):  
New Species ◽  
South China Sea ◽  
South China ◽  
Taxonomic Status ◽  
Molecular Data ◽  
The South China Sea ◽  
The South ◽  
Western Atlantic ◽  
China Sea ◽  
Coast Of Vietnam

© 2019 Japanese Society of Phycology Flattened Gracilaria species are widely distributed along the coasts of the South China Sea with more than 20 species recorded. Within the South China Sea, Gracilaria mammillaris has only been reported from Vietnam, but this species is likely restricted to the western Atlantic. This study aimed to reevaluate the taxonomic status of Vietnamese specimens of ‘G. mammillaris’ using combined morphological and molecular data. Our data clearly indicated that Vietnamese specimens were morphologically and genetically distinct from authentic G. mammillaris from the western Atlantic, and also other described flat Gracilaria species. We, therefore, propose that specimens from Vietnam originally identified as G. mammillaris be designated as a new species, Gracilaria phuquocensis sp. nov. Morphologically, G. phuquocensis can be distinguished from other flat Gracilaria species by its small thallus size, narrower blades, many medullary layers, abundant basal nutritive filaments within mature cystocarps, and tetrasporangial nemathecium. Our rbcL sequence analyses showed that the new species was sister to Gracilaria rhodymenioides from Thailand, and these two species formed a clade with cylindrical Gracilaria species. Our study contributes to clarification of the taxonomic status of misidentified specimens attributed to the flattened Gracilaria species in the South China Sea.

scholarly journals Gracilaria phuquocensis sp. nov., a new flattened Gracilaria species (Gracilariales, Rhodophyta), previously recognized as G. mammillaris, from the southern coast of Vietnam

2020 ◽  
Author(s):  
HN Le ◽  
N Muangmai ◽  
S Kheauthong ◽  
Z Sun ◽  
Giuseppe Zuccarello
Keyword(s):  
New Species ◽  
South China Sea ◽  
South China ◽  
Taxonomic Status ◽  
Molecular Data ◽  
The South China Sea ◽  
The South ◽  
Western Atlantic ◽  
China Sea ◽  
Coast Of Vietnam

© 2019 Japanese Society of Phycology Flattened Gracilaria species are widely distributed along the coasts of the South China Sea with more than 20 species recorded. Within the South China Sea, Gracilaria mammillaris has only been reported from Vietnam, but this species is likely restricted to the western Atlantic. This study aimed to reevaluate the taxonomic status of Vietnamese specimens of ‘G. mammillaris’ using combined morphological and molecular data. Our data clearly indicated that Vietnamese specimens were morphologically and genetically distinct from authentic G. mammillaris from the western Atlantic, and also other described flat Gracilaria species. We, therefore, propose that specimens from Vietnam originally identified as G. mammillaris be designated as a new species, Gracilaria phuquocensis sp. nov. Morphologically, G. phuquocensis can be distinguished from other flat Gracilaria species by its small thallus size, narrower blades, many medullary layers, abundant basal nutritive filaments within mature cystocarps, and tetrasporangial nemathecium. Our rbcL sequence analyses showed that the new species was sister to Gracilaria rhodymenioides from Thailand, and these two species formed a clade with cylindrical Gracilaria species. Our study contributes to clarification of the taxonomic status of misidentified specimens attributed to the flattened Gracilaria species in the South China Sea.

scholarly journals A NEW SPECIES OF THE Pareas hamptoni COMPLEX (SQUAMATA, SERPENTES, PAREIDAE) FROM THE GOLDEN TRIANGLE

2020 ◽  
pp. 174-193
Author(s):  
Li Ding ◽  
Zening Chen ◽  
Chatmongkon Suwannapoom ◽  
Tan Van Nguyen ◽  
Nikolay A. Poyarkov ◽  
...  
Keyword(s):  
New Species ◽  
Yunnan Province ◽  
Southern China ◽  
Taxonomic Status ◽  
Distinct Species ◽  
Molecular Data ◽  
Lower Number ◽  
Actual Distribution ◽  
Golden Triangle ◽  
Morphological And Molecular Data

An investigation of the taxonomic status of Pareas hamptoni (Hampton's Slug snake) based on morphological and molecular data revealed a new distinct species from the Golden Triangle region (comprising parts of southern China, and adjacent Laos and Thailand). The new species is shown to be a sister species to P. hamptoni but can be separated from the latter by having 3–5 dorsal scale rows at midbody slightly keeled (vs 5–9 scales strongly keeled); a lower number of ventrals, 170–188 (vs 185–195); and a lower number of subcaudals, 67–91 (vs 91–99). The new species is currently known from northwestern Thailand, northern Laos, and the southern part of Yunnan Province in China at elevations of 1,160–2,280 m a.s.l. We suggest that the new species to be considered of Least Concern (LC) in the IUCN‘s Red List categories. Problems of taxonomy and actual distribution of the P. hamptoni complex are briefly discussed; our results show P. hamptoni is now reliably known only from Myanmar and Vietnam, but its occurrence in Yunnan Province of China is likely.

Sign in / Sign up

Export Citation Format

Share Document