scholarly journals A new genus for Pericera septemspinosa Stimpson, 1871 and Pericera heptacantha Bell, 1836 (Crustacea, Brachyura, Majoidea), based on morphology and molecular data

2020 ◽  
Vol 96 (1) ◽  
pp. 205-216
Author(s):  
Jessica Colavite ◽  
Amanda M. Windsor ◽  
William Santana
Keyword(s):  
New Genus ◽  
Molecular Data ◽  
Small Subunit ◽  
Mitochondrial Genes ◽  
Eastern Pacific ◽  
Spider Crab ◽  
Small Subunit Rrna ◽  
Western Atlantic ◽  
Nuclear Locus

A new genus of majoid spider crab, Pohleusgen. nov. is established for Pericera septemspinosa Stimpson, 1871 and Pericera heptacantha Bell, 1836, based on morphology and molecular data from the partial sequences of the 12S and 16S mitochondrial genes and the 18S small subunit rRNA nuclear locus. The species are re-described and illustrated, based on material from several localities of the western Atlantic and eastern Pacific oceans. The carapace, antennal and pterygostomial spines, male thoracic sternum and first gonopods are distinctive characters, distinguishing Pohleusgen. nov. from species assigned to Macrocoeloma Miers, 1879, where P. septemspinosus and P. heptacanthus are currently included.

scholarly journals Molecular and morphological systematics of hypogean schizomids (Schizomida:Hubbardiidae) in semiarid Australia

2008 ◽  
Vol 22 (2) ◽  
pp. 167 ◽  
Author(s):  
Mark S. Harvey ◽  
Oliver Berry ◽  
Karen L. Edward ◽  
Garth Humphreys
Keyword(s):  
Type Species ◽  
New Genus ◽  
Molecular Data ◽  
Small Subunit ◽  
Small Subunit Rrna ◽  
Cytochrome Oxidase Subunit ◽  
Genetic Structuring ◽  
Phylogenetic Status ◽  
Mtdna Lineages ◽  
Morphological Differences

We used molecular and morphological techniques to study troglobitic schizomids inhabiting a variety of subterranean landforms in semiarid Western Australia. The study was designed to explore the taxonomic and phylogenetic status of newly discovered populations of subterranean schizomids. Molecular sequences of the mitochondrial DNA (mtDNA) cytochrome oxidase subunit 1 (COI) and small subunit rRNA (12S) were obtained from a total of 73 schizomid specimens. Populations sampled from boreholes within mesa landforms in the Robe Valley were highly genetically distinct from species of Draculoides Harvey, 1992 found elsewhere in the Pilbara (Cape Range and Barrow Island). Pronounced genetic structuring was also evident at a fine spatial scale within the Robe Valley, with populations from each of the mesas examined exhibiting unique and highly divergent mtDNA lineages. These molecular data were generally supported by small but significant morphological features, usually in the secondary male structures, but some species were represented only by female specimens that possessed more conservative morphologies. The molecular data defined two major in-group clades, which were supported by morphological differences. One clade was widespread and included the type species of Draculoides, D. vinei (Harvey), along with D. bramstokeri Harvey & Humphreys, D. brooksi Harvey, D. julianneae Harvey, D. mesozeirus, sp. nov. and D. neoanthropus, sp. nov. The second clade was restricted to the Robe Valley and deemed to represent a new genus, Paradraculoides, which included four new species P. anachoretus, sp. nov., P. bythius, sp. nov., P. gnophicola, sp. nov. and P. kryptus, sp. nov. (type species).

scholarly journals Three new species and a new genus of majoid crabs from the eastern Pacific (Decapoda, Brachyura)

ZooKeys ◽  
2019 ◽  
Vol 825 ◽  
pp. 1-24 ◽  
Author(s):  
Jessica Colavite ◽  
Amanda Windsor ◽  
William Santana
Keyword(s):  
New Species ◽  
New Genus ◽  
Molecular Data ◽  
Eastern Pacific ◽  
Western Atlantic ◽  
Deep Waters ◽  
Morphological And Molecular Data ◽  
Three New Species ◽  
A New Species ◽  
General Appearance

Three new species and a new genus of majoid crabs from deep waters in the eastern Pacific are described and illustrated using morphological and molecular data. A new species of inachoidid, Collodesanartiussp. n. is described from Peru, which resembles C.tenuirostris Rathbun, 1893, in the general appearance of the carapace, but is distinguished by the details of tubercles on the carapace and thoracic sternum, proportions of the pereopod articles, and bathymetric distribution. A new epialtid, Nibiliamachalasp. n., is described from Ecuador; Nibilia A Milne-Edwards, 1878 has, until now, been considered to be monotypic, occurring only in the western Atlantic. This new species, from the eastern Pacific, closely resembles N.antilocapra (Stimpson, 1871) in the general morphology, but can be distinguished by the number of spines on the carapace and pereopods. Another epialtid, Solincaaulixgen. n. et sp. n, is establish for material collected from Ecuador and Peru, and can be easily identified from other taxa by the presence of a deep furrow between the very inflated branchial regions.

scholarly journals Description of Eurystomatella sinica n. gen., n. sp., with establishment of a new family Eurystomatellidae n. fam. (Protista, Ciliophora, Scuticociliatia) and analyses of its phylogeny inferred from sequences of the small-subunit rRNA gene

2010 ◽  
Vol 60 (2) ◽  
pp. 460-468 ◽  
Author(s):  
Miao Miao ◽  
Yangang Wang ◽  
Weibo Song ◽  
John C. Clamp ◽  
Khaled A. S. Al-Rasheid
Keyword(s):  
New Genus ◽  
Phylogenetic Analyses ◽  
Sister Group ◽  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
New Family ◽  
Small Subunit Rrna Gene ◽  
The Family ◽  
Great Divergence

Recently, an undescribed marine ciliate was isolated from China. Investigation of its morphology and infraciliature revealed it as an undescribed species representing a new genus, Eurystomatella n. gen., the type of the new family Eurystomatellidae n. fam. The new family is defined by close-set, apically positioned oral membranelles and a dominant buccal field that is surrounded by an almost completely circular paroral membrane. The new genus is defined by having a small oral membranelle 1 (M1), bipartite M2 and well-developed M3, a body surface faintly sculptured with a silverline system in a quadrangular, reticulate pattern and a cytostome located at the anterior third of a large buccal field. The type species of the new genus, Eurystomatella sinica n. sp., is a morphologically unique form that is defined mainly by the combination of a conspicuously flattened body, several caudal cilia, extremely long cilia associated with the buccal apparatus and a contractile vacuole located subcaudally. According to phylogenetic analyses of small-subunit (SSU) rRNA gene sequences, Eurystomatella clusters with the genus Cyclidium, as a sister group to the family Pleuronematidae. The great divergence in both buccal and somatic ciliature between Eurystomatella and all other known scuticociliates supports the establishment of a new family for Eurystomatella.

Kootenaia burkei, a new genus and species of slug from northern Idaho, United States (Gastropoda: Pulmonata: Arionidae)

Zootaxa ◽  
2003 ◽  
Vol 355 (1) ◽  
pp. 1 ◽  
Author(s):  
WILLIAM P. LEONARD ◽  
LYLE CHICHESTER ◽  
JIM BAUGH ◽  
THOMAS WILKE
Keyword(s):  
United States ◽  
New Genus ◽  
Molecular Data ◽  
Mitochondrial Genes ◽  
New Genus And Species ◽  
Molecular Analyses ◽  
The Family ◽  
Taxonomic Decision ◽  
Northern Idaho ◽  
High Degree

A new genus and species of arionid slug, Kootenaia burkei n. gen. et n. sp., are formally described from northern Idaho, United States. This taxonomic decision is based on comparative anatomical and molecular data involving representatives of a total of ten species and three additional genera (Hemphillia, Prophysaon, and Zacoleus) of the family Arionidae. The anatomical analyses show that the new genus is characterized by a major autapomorphy, the complete absence of an epiphallus, which is found in all other arionids. The molecular analyses using two mitochondrial genes and the anatomical data produce congruent topologies. Overall, there is a high degree of concordance between the anatomical and molecular datasets.

Morphological studies and molecular data on a new marine ciliate, Apokeronopsis sinica n. sp. (Ciliophora: Urostylida), from the South China Sea

Zootaxa ◽  
2009 ◽  
Vol 2005 (1) ◽  
pp. 57-66 ◽  
Author(s):  
WEIWEI LIU ◽  
JIQIU LI ◽  
SHAN GAO ◽  
CHEN SHAO ◽  
JUN GONG ◽  
...  
Keyword(s):  
Molecular Data ◽  
Small Subunit ◽  
Rrna Gene ◽  
Small Subunit Rrna ◽  
Cortical Granules ◽  
Marine Ciliate ◽  
Morphological Studies ◽  
Small Subunit Rrna Gene ◽  
Morphological And Molecular Data

The morphology of a new marine urostylid ciliate, Apokeronopsis sinica n. sp., collected from the Clear Water Bay, Hong Kong, was investigated. Additionally, the SSrRNA gene was sequenced in order to make a comparison at molecular level. Based on both morphological and molecular data, descriptions and comparisons with its congeners are provided. Apokeronopsis sinica is characterized by: body size about 150–200 × 50–65 µm in vivo; two kinds of cortical granules; about 20 cirri in frontal area which form the non-typical bicorona; 2 frontoterminal, ca. 4 buccal and 10 transverse cirri; midventral complex consists of 21–32 pairs of cirri; on average 35 right and 30 left marginal cirri; about 50 membranelles; invariably 3 dorsal kineties. A key to the identification of the known Apokeronopsis species was suggested. The small subunit rRNA gene sequence differences between Apokeronopsis sinica and its congeners range from 1.64% to 3.72%.

Revision of theAlpheus cristulifronsspecies complex (Crustacea: Decapoda: Alpheidae), with description of a new species from the tropical eastern Atlantic

2008 ◽  
Vol 88 (3) ◽  
pp. 543-562 ◽  
Author(s):  
Arthur Anker ◽  
Carla Hurt ◽  
Nancy Knowlton
Keyword(s):  
Gulf Of California ◽  
Molecular Data ◽  
Sensu Stricto ◽  
Eastern Pacific ◽  
Gulf Of Guinea ◽  
Western Atlantic ◽  
Sister Clade ◽  
The Caribbean ◽  
Colour Patterns ◽  
A New Species

The taxonomy of the snapping shrimpAlpheus cristulifronsRathbun, 1900, previously reported from the eastern Pacific and western and eastern Atlantic, is reviewed based on molecular data (COI), morphology and colour patterns. Three species are recognized in theA. cristulifronsspecies complex.Alpheus cristulifrons sensu strictois restricted to the western Atlantic, ranging from Florida and the Caribbean Sea to southern Brazil. The eastern PacificA. cristulifrons sensuKim & Abele, 1988 corresponds toA. utriensisRamos & Von Prahl, 1989, ranging from the Gulf of California to Colombia; this species can be separated fromA. cristulifronsby the absence of balaeniceps setae on the male minor chela and the presence of bands on the antennular and antennal flagella. The eastern AtlanticA. cristulifronssensuCrosnier & Forest, 1966 is described asA. xanthocarpussp. nov. based on recently collected material from the island of São Tomé in the Gulf of Guinea; this species differs fromA. cristulifronsby the posteriorly more extending rostral carina and the presence of conspicuous yellow spots on the carpus and chela of the second pereiopod. Molecular data suggest thatA. utriensisis the eastern Pacific sister clade to the amphi-Atlntic clade that includesA. cristulifronsandA. xanthocarpussp. nov.

A new genus for Chlorodiella longimana (H. Milne Edwards) supported by morphology and molecular data, with a preliminary phylogeny of the Chlorodiellinae (Crustacea : Decapoda : Xanthidae)

2013 ◽  
Vol 27 (4) ◽  
pp. 379 ◽  
Author(s):  
Robert M. Lasley ◽  
Joelle C. Y. Lai ◽  
Brent P. Thoma
Keyword(s):  
Phylogenetic Analysis ◽  
Atlantic Ocean ◽  
New Genus ◽  
Histone H3 ◽  
Antennal Segment ◽  
Molecular Data ◽  
Nuclear Marker ◽  
Western Atlantic ◽  
Mitochondrial Markers ◽  
General Appearance

Chlorodiella longimana is the only chlorodielline species presently known from the western Atlantic Ocean. Although C. longimana superficially resembles other species of the genus in general appearance of the carapace, morphological analyses revealed a suite of characters that separate it from all other known species of Chlorodiella – in particular, ambulatory legs having dactyli with a single tip and a basal antennal segment with a lateral flange that extends halfway into the orbital hiatus, excluding the antennal flagellum. In addition, a phylogenetic analysis of the Chlorodiellinae inferred from three mitochondrial markers (12S, 16S, COXI) and a nuclear marker (histone H3), confirms that C. longimana is genetically distinct from its congeners. A new genus, Ratha, is proposed to accommodate C. longimana. In addition, a phylogenetic analysis of six chlorodielline genera indicates that the subfamily is polyphyletic as presently defined.

scholarly journals The phylogeny of the Schistosomatidae based on three genes with emphasis on the interrelationships of Schistosoma Weinland, 1858

Parasitology ◽  
2003 ◽  
Vol 126 (3) ◽  
pp. 203-224 ◽  
Author(s):  
A. E. LOCKYER ◽  
P. D. OLSON ◽  
P. ØSTERGAARD ◽  
D. ROLLINSON ◽  
D. A. JOHNSTON ◽  
...  
Keyword(s):  
Ribosomal Subunit ◽  
Good Deal ◽  
Sister Group ◽  
Morphological Characters ◽  
Molecular Data ◽  
Small Subunit ◽  
Small Subunit Rrna ◽  
Asian Origin ◽  
The Family ◽  
Veterinary Importance

Schistosomes are digenean flukes, parasitic of birds, mammals and crocodiles. The family Schistosomatidae contains species of considerable medical and veterinary importance, which cause the disease schistosomiasis. Previous studies, both morphological and molecular, which have provided a good deal of information on the phylogenetics of this group, have been limited in the number of species investigated or the type or extent of molecular data used. This paper presents the most comprehensive phylogeny to date, based on the sequences of 3 genes, complete ribosomal small subunit rRNA and large ribosomal subunit rRNA, and mitochondrial cytochrome oxidase 1, sequenced from 30 taxa including at least 1 representative from 10 of the 13 known genera of the Schistosomatidae and 17 of the 20 recognized Schistosoma species. The phylogeny is examined using morphological characters, intermediate and definitive host associations and biogeography. Theories as to the origins and spread of Schistosoma are also explored. The principal findings are that Ornithobilharzia and Austrobilharzia form a sister group to the Schistosoma; mammalian schistosomes appear paraphyletic and 2 Trichobilharzia species, T. ocellata and T. szidati, seem to be synonymous. The position of Orientobilharzia within the Schistosoma is confirmed, as is an Asian origin for the Schistosoma, followed by subsequent dispersal through India and Africa.

Lollipopaia minuta from Thailand, a new genus and species of the Diaporthales (Ascomycetes, Fungi) based on morphological and molecular data

2001 ◽  
Vol 79 (9) ◽  
pp. 1099-1106 ◽  
Author(s):  
Patrik Inderbitzin ◽  
Mary L Berbee
Keyword(s):  
Dna Sequences ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Small Subunit ◽  
Bootstrap Support ◽  
New Genus And Species ◽  
Tropical Mycology ◽  
Close Relationship ◽  
Morphological And Molecular Data

In this paper, we describe the new genus and species Lollipopaia minuta from a tropical rain forest in Thailand. The ascomata were long beaked and seated on a pseudoparenchymatous stroma that was erumpent through the bark of a decaying branch. Mature ascomata were readily formed under laboratory conditions. Lollipopaia minuta had ascomatal walls forming a textura intricata in surface view and deliquescent paraphyses. The asci floated freely at maturity and had a nonstaining apical ring. These characters are found in the Diaporthales. However, the habit of the stroma combined with the filiform ascospores distinguished L. minuta from all known genera of the Diaporthales. Thus, a close relationship to taxa outside the Diaporthales was considered. Lollipopaia minuta was similar to Ophioceras or Pseudohalonectria in shape of the ascomata, asci, and ascospores. However, phylogenetic analyses based on small subunit ribosomal DNA sequences confirmed the placement of L. minuta within the Diaporthales with 100% bootstrap support. A closest relative within the Diaporthales was not determined.Key words: Magnaporthaceae, microfungi, taxonomy, tropical mycology.

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