Phenetic affinities of males of the army ant genus Dorylus (Hymenoptera: Formicidae: Dorylinae)

1982 ◽  
Vol 60 (11) ◽  
pp. 2652-2658 ◽  
Author(s):  
David Barr ◽  
William H. Gotwald Jr.
Keyword(s):  
Multivariate Analyses ◽  
Single Species ◽  
Morphological Data ◽  
Taxonomic Structure ◽  
Old World ◽  
Army Ant

Multivariate analyses of males of 25 species of the Old World army ant genus Dorylus were used to investigate taxonomic structure inherent in the morphological data gathered. Results were compared both with the current subgeneric classification of this genus and with results from a similar study on the major workers. Males are phenetically more divergent than major workers. The subgenera Rhogmus, Alaopone, and Typhlopone appear deserving of continued individual status, but species of Anomma and Dorylus (s.s.) form one diverse taxon. Although the single species of Dichthadia is relatively distinctive in this study, a conservative classification would place it with species of Dorylus (s.s.).

scholarly journals Sequence data from isolated lichen-associated melanized fungi enhance delimitation of two new lineages within Chaetothyriomycetidae

2021 ◽  
Vol 20 (7) ◽  
pp. 911-927
Author(s):  
Lucia Muggia ◽  
Yu Quan ◽  
Cécile Gueidan ◽  
Abdullah M. S. Al-Hatmi ◽  
Martin Grube ◽  
...  
Keyword(s):  
Sequence Data ◽  
Single Species ◽  
Sister Group ◽  
Asexual Propagation ◽  
Dna Sequence Data ◽  
Wide Range ◽  
The Family ◽  
Rock Inhabiting Fungi ◽  
Stable Habitat

AbstractLichen thalli provide a long-lived and stable habitat for colonization by a wide range of microorganisms. Increased interest in these lichen-associated microbial communities has revealed an impressive diversity of fungi, including several novel lineages which still await formal taxonomic recognition. Among these, members of the Eurotiomycetes and Dothideomycetes usually occur asymptomatically in the lichen thalli, even if they share ancestry with fungi that may be parasitic on their host. Mycelia of the isolates are characterized by melanized cell walls and the fungi display exclusively asexual propagation. Their taxonomic placement requires, therefore, the use of DNA sequence data. Here, we consider recently published sequence data from lichen-associated fungi and characterize and formally describe two new, individually monophyletic lineages at family, genus, and species levels. The Pleostigmataceae fam. nov. and Melanina gen. nov. both comprise rock-inhabiting fungi that associate with epilithic, crust-forming lichens in subalpine habitats. The phylogenetic placement and the monophyly of Pleostigmataceae lack statistical support, but the family was resolved as sister to the order Verrucariales. This family comprises the species Pleostigma alpinum sp. nov., P. frigidum sp. nov., P. jungermannicola, and P. lichenophilum sp. nov. The placement of the genus Melanina is supported as a lineage within the Chaetothyriales. To date, this genus comprises the single species M. gunde-cimermaniae sp. nov. and forms a sister group to a large lineage including Herpotrichiellaceae, Chaetothyriaceae, Cyphellophoraceae, and Trichomeriaceae. The new phylogenetic analysis of the subclass Chaetothyiomycetidae provides new insight into genus and family level delimitation and classification of this ecologically diverse group of fungi.

scholarly journals Relationship between pollen morphology and chromosome numbers in Brazilian species of Lippia L. (Verbenaceae)

2013 ◽  
Vol 85 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Saulo M. Sousa ◽  
Patrícia M.O. Pierre ◽  
Giovana A. Torres ◽  
Lisete C. Davide ◽  
Lyderson F. Viccini
Keyword(s):  
Chromosome Numbers ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Positive Association ◽  
Single Species ◽  
Morphological Data ◽  
Prolate Spheroidal ◽  
Oblate Spheroidal ◽  
Exine Ornamentation ◽  
Different Types

The pollen morphology and exine structure of 17 species of Lippia L. were investigated in this work using light and scanning electron microscopy. Among the species studied, 14 showed tricolporate pollen grains, two had tri- and tetracolporate pollen grains and a single species exhibited, only tetracolporate pollen. The amb ranged from triangular to square, and the shape varied from oblate-spheroidal to prolate-spheroidal. Three different types of exine ornamentation were observed: psilate, scabrate and perforate. In addition to morphological data, we found positive association between the chromosome numbers and size of pollen grains, and also between the length and width of the colpi. The results indicate that the characteristics of pollen grains in Lippia may be used as an additional taxonomic character of the genus.

scholarly journals Studies on aroma of coffee. Part VIII. Classification of various trade varieties of coffee by coupling of sensory data and multivariate analyses.

1987 ◽  
Vol 51 (7) ◽  
pp. 1745-1752 ◽  
Author(s):  
Kouji WADA ◽  
Seiichi OHGAMA ◽  
Hitoshi SASAKI ◽  
Mitsuya SHIMODA ◽  
Yutaka OSAJIMA
Keyword(s):  
Multivariate Analyses ◽  
Sensory Data

scholarly journals Legumes of Kerala, India: a checklist

2021 ◽  
Vol 13 (5) ◽  
pp. 18257-18282
Author(s):  
Anoop P. Balan ◽  
S.V. Predeep
Keyword(s):  
Western Ghats ◽  
Single Species ◽  
Biodiversity Hotspot ◽  
The State ◽  
Field Surveys ◽  
Extensive Field ◽  
Voucher Specimens ◽  
Kerala State ◽  
The Western Ghats

A checklist of the legumes of Kerala State is presented.  This exhaustive checklist is an outcome of extensive field surveys, collection, identification and documentation of family Leguminosae carried out across Kerala State during the period 2006–2019.  A total of 448 taxa were recorded under five subfamilies and 115 genera.  The majority of the legumes are herbs and shrubs, the rest being trees and woody climbers.  About 81 taxa are endemic to India, especially confined to the Western Ghats biodiversity hotspot, out of which 17 are endemic to  Kerala.  The state is home to two Critically Endangered and six Endangered legumes, facing severe threat of extinction.  Crotalaria is the dominant legume genus in the state with 62 taxa followed by Desmodium and Indigofera.  About 57 genera are represented by single species each.  Legumes are treated according to the latest phylogenetic classification of the Legume Phylogeny Working Group (LPWG).  Updated nomenclature, habit, native countries, voucher specimens, and images of endemic and lesser known legumes found in the state are provided.  Crotalaria multiflora var. kurisumalayana (Sibichen & Nampy) Krishnaraj & N. Mohanan is reduced as a synonym to C. multiflora (Arn.) Benth.

scholarly journals Classification of Streptomyces griseus (Krainsky 1914) Waksman and Henrici 1948 and related species and the transfer of ‘Microstreptospora cinerea’ to the genus Streptomyces as Streptomyces yanii sp. nov.

2005 ◽  
Vol 55 (4) ◽  
pp. 1605-1610 ◽  
Author(s):  
Zhiheng Liu ◽  
Yanlin Shi ◽  
Yamei Zhang ◽  
Zhihong Zhou ◽  
Zhitang Lu ◽  
...  
Keyword(s):  
Streptomyces Griseus ◽  
Taxonomic Status ◽  
Morphological Data ◽  
Rrna Gene ◽  
Phenotypic Properties ◽  
Phenotypic Data ◽  
Genus Streptomyces ◽  
Actinomycete Strain ◽  
Soil Actinomycete

A soil actinomycete, strain 80-133T, with the non-validly published name ‘Microstreptospora cinerea’, was the subject of a polyphasic study designed to clarify its taxonomic status. Comparative 16S rRNA gene sequence studies indicated that the organism belonged to the genus Streptomyces, a result in line with previous chemotaxonomic and morphological data. The strain belonged to the Streptomyces griseus clade, but could be distinguished from representatives of species assigned to this taxon by using DNA–DNA relatedness and phenotypic data. In light of these findings, it is proposed that the organism should be recognized as a novel species of the genus Streptomyces. The name proposed for this taxon is Streptomyces yanii sp. nov., with isolate 80-133T (=AS 4.1146T=JCM 3331T) as the type strain. It was also shown that representative strains of Streptomyces argenteolus, Streptomyces caviscabies, S. griseus and Streptomyces setonii belong to the same genomic species and have key phenotypic properties in common. It is proposed that S. caviscabies and S. setonii should be considered as later heterotypic synonyms of S. griseus and that S. argenteolus AS 4.1693T should also be assigned to this taxon.

A molecular phylogeny of Callianassidae and related families (Crustacea : Decapoda : Axiidea) with morphological support

2020 ◽  
Vol 34 (2) ◽  
pp. 113 ◽  
Author(s):  
Rafael Robles ◽  
Peter C. Dworschak ◽  
Darryl L. Felder ◽  
Gary C. B. Poore ◽  
Fernando L. Mantelatto
Keyword(s):  
Bayesian Analysis ◽  
Molecular Analysis ◽  
Single Species ◽  
Molecular Data ◽  
Total Evidence ◽  
Morphological Data ◽  
12S Rrna ◽  
New Genera ◽  
Key Species ◽  
The Family

The axiidean families Callianassidae and Ctenochelidae, sometimes treated together as Callianassoidea, are shown to represent a monophyletic taxon. It comprises 265 accepted species in 74 genera, twice this number of species if fossil taxa are included. The higher taxonomy of the group has proved difficult and fluid. In a molecular phylogenetic approach, we inferred evolutionary relationships from a maximum-likelihood (ML) and Bayesian analysis of four genes, mitochondrial 16S rRNA and 12S rRNA along with nuclear histone H3 and 18S rRNA. Our sample consisted of 298 specimens representing 123 species plus two species each of Axiidae and Callianideidae serving as outgroups. This number represented about half of all known species, but included 26 species undescribed or not confidently identified, 9% of all known. In a parallel morphological approach, the published descriptions of all species were examined and detailed observations made on about two-thirds of the known fauna in museum collections. A DELTA (Description Language for Taxonomy), database of 135 characters was made for 195 putative species, 18 of which were undescribed. A PAUP analysis found small clades coincident with the terminal clades found in the molecular treatment. Bayesian analysis of a total-evidence dataset combined elements of both molecular and morphological analyses. Clades were interpreted as seven families and 53 genera. Seventeen new genera are required to reflect the molecular and morphological phylograms. Relationships between the families and genera inferred from the two analyses differed between the two strategies in spite of retrospective searches for morphological features supporting intermediate clades. The family Ctenochelidae was recovered in both analyses but the monophyly of Paragourretia was not supported by molecular data. The hitherto well recognised family Eucalliacidae was found to be polyphyletic in the molecular analysis, but the family and its genera were well defined by morphological synapomorphies. The phylogram for Callianassidae suggested the isolation of several species from the genera to which they had traditionally been assigned and necessitated 12 new generic names. The same was true for Callichiridae, with stronger ML than Bayesian support, and five new genera are proposed. Morphological data did not reliably reflect generic relationships inferred from the molecular analysis though they did diagnose terminal taxa treated as genera. We conclude that discrepancies between molecular and morphological analyses are due at least in part to missing sequences for key species, but no less to our inability to recognise unambiguously informative morphological synapomorphies. The ML analysis revealed the presence of at least 10 complexes wherein 2–4 cryptic species masquerade under single species names.

Back to the Future? Molecules Take Us Back to the 1925 Classification of the Lembophyllaceae (Bryopsida)

2009 ◽  
Vol 34 (3) ◽  
pp. 443-454 ◽  
Author(s):  
Dietmar Quandt ◽  
Sanna Huttunen ◽  
Ray Tangney ◽  
Michael Stech
Keyword(s):  
Single Species ◽  
Molecular Data ◽  
Nuclear Ribosomal Dna ◽  
New Family ◽  
Morphological Studies ◽  
The Family ◽  
Family Level ◽  
Plastid Markers ◽  
Pleurocarpous Moss

Although the Lembophyllaceae has undergone considerable revision during the last century, the generic and familial level relationships of this pleurocarpous moss family are still poorly understood. To address this problem, a generic revision of the Lembophyllaceae based on molecular data was undertaken. We analyzed two plastid markers, the trnL-trnF and the psbT-psbH region in combination with the ITS2 of nuclear ribosomal DNA. The molecular data reveal that the current circumscription of the family is too narrow and that several genera previously placed in the Lembophyllaceae should be reincluded. The family includes: Bestia, Camptochaete, Dolichomitra, Dolichomitriopsis, Fallaciella, Fifea, Isothecium, Lembophyllum, Looseria stat. nov., Pilotrichella, Rigodium, Tripterocladium, and Weymouthia. Looseria contains a single species: Looseria orbiculata comb. nov. Acrocladium is excluded and provisionally accommodated in the Lepyrodontaceae. Generic limits supported by the molecular data support a return to the early twentieth century family concept of Brotherus. The analyses indicate that the segregate genus Orthostichella is distinct from its parent genus Pilotrichella, probably at the family level. Whereas Pilotrichella is resolved within the Lembophyllaceae, Orthostichella clusters with Porotrichum and Porothamnium forming a clade (OPP-clade) sister to the remaining Neckeraceae and Lembophyllaceae. Hence, the Neckeraceae is paraphyletic. Recognition of the OPP-clade as a new family is desirable but awaits the results of detailed ongoing morphological studies.

New insights on the taxonomy and phylogenetic relationships of the Neotropical genus Phoebis (Pieridae: Coliadinae) revealed by molecular and morphological data

Zootaxa ◽  
2018 ◽  
Vol 4457 (1) ◽  
pp. 179 ◽  
Author(s):  
LEIDYS MURILLO-RAMOS ◽  
RENZO HERNÁNDEZ TORRES ◽  
RAYNER NÚÑEZ ÁGUILA ◽  
ROGER AYAZO
Keyword(s):  
Morphological Characters ◽  
Point Of View ◽  
Morphological Data ◽  
Caribbean Region ◽  
Greater Antilles ◽  
Data Set ◽  
Mitochondrial Coi ◽  
The Matrix ◽  
Taxonomic Point

Phoebis Hübner (1819) is a genus of the Neotropical subfamily Coliadinae (Lepidoptera: Pieridae). The highest diversity is found in the Greater Antilles islands in the Caribbean region. Although from the taxonomic point of view, Phoebis seems to be a stable genus, there is no phylogenetic hypothesis corroborating the monophyly of the genus. In this study, we used both morphological characters and a genetic dataset consisting of one mitochondrial (COI) and three nuclear markers (RpS5, MDH, Wingless). The matrix was concatenated and analysed with parsimony under implied weights (IW). Also, the concatenated data set was analysed using maximum likelihood and Bayesian inference evolutionary methods, and ancestral states reconstruction with characters traditionally used for classification of Phoebis was carried out. The same topology was recovered by Parsimony, ML and BI analysis, and suggest that Phoebis is not a monophyletic genus, with Aphrissa and Rhabdodryas nested within it. Our findings allow us to consider the genera Rhabdodryas syn.rev. and Aphrissa syn.rev. to be synonyms of Phoebis. These results have implications for the systematics of Phoebis and the genera that should be accepted in Coliadinae.

Clinal Variation in Electrophoretic and Morphological Characters between Two Nominal Species of the Genus Pseudomugil (Pisces : Atheriniformes : Pseudomugilidae)

1979 ◽  
Vol 30 (3) ◽  
pp. 375 ◽  
Author(s):  
AJ Hadfield ◽  
V Ivantsoff ◽  
PG Johnson
Keyword(s):  
Principal Components ◽  
Major Part ◽  
Single Species ◽  
Morphological Characters ◽  
Morphological Data ◽  
Nominal Species ◽  
Clinal Variation ◽  
Brackish Waters ◽  
Coastal Species ◽  
Eastern Australia

Electrophoretic and morphological comparisons were made between 14 populations representing the major part of the known range of the nominal fish species, Pseudomugil signifer Kner and Pseudomugil signatus (Gunther), described from the fresh and brackish waters of eastern Australia. Analysis by principal components was used to assess the morphological data. .Clinal variation revealed in 10 morphological characters and at two enzyme loci was found to bridge most of the previously described differences between species. The type material of P. signatus afinis from the Low Isles, Queensland, was re-examined and did not appear to differ morphologically from the coastal species. It is therefore suggested that the populations studied represent a single species Pseudomugil signifer Kner.

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