scholarly journals The shrimp superfamily Sergestoidea: a global phylogeny with definition of new families and an assessment of the pathways into principal biotopes

2017 ◽  
Vol 4 (9) ◽  
pp. 170221 ◽  
Author(s):  
A. L. Vereshchaka
Keyword(s):  
Phylogenetic Analysis ◽  
Vertical Direction ◽  
Evolutionary Model ◽  
Copulatory Organ ◽  
Morphological Characters ◽  
Valid Species ◽  
Genus Level ◽  
Family Level ◽  
Medium Level ◽  
Definition Of

The phylogenetic analysis of Sergestoidea based on 253 morphological characters and encompassing all 99 valid species confirmed all previously recognized genus-level clades. Analysis retrieved five major robust clades that correspond to families Luciferidae, Sergestidae, Acetidae fam.n., Sicyonellidae fam.n. and Petalidiumidae fam.n. Synonymy, emended diagnoses and composition of revealed family-level clades are provided. Three types of morphological characters were important in the phylogeny of the Sergestoidea: general external characters, copulatory organs, and photophores. Novel metrics to quantify the contribution of these character types were tested. General external characters were significant in supporting the major clades (80% of the families and nearly half of the genera). Copulatory organ characters and photophores greatly supported the medium-level clades: Lucifer, Belzebub , Petalidium, Neosergestes, Challengerosergia (copulatory organ characters) and Lucensosergia , Challengerosergia, Gardinerosergia , Phorcosergia (photophores). An evolutionary model of the Sergestoidea showing their pathways into their principal biotopes is proposed: the major clades evolved in a vertical direction (from epi- to bathypelagic); further divergence at the genus level occurred within vertical zones in a horizontal direction, with the invasion of the benthopelagic and neritic (shelf and estuarine) habitats and speciation within these domains.

scholarly journals Cretaceous origin and repeated tertiary diversification of the redefined butterflies

2011 ◽  
Vol 279 (1731) ◽  
pp. 1093-1099 ◽  
Author(s):  
Maria Heikkilä ◽  
Lauri Kaila ◽  
Marko Mutanen ◽  
Carlos Peña ◽  
Niklas Wahlberg
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Evolutionary History ◽  
Sister Group ◽  
Morphological Characters ◽  
Molecular Data ◽  
Bayesian Approaches ◽  
The Family ◽  
Family Level ◽  
Morphological And Molecular Data

Although the taxonomy of the ca 18 000 species of butterflies and skippers is well known, the family-level relationships are still debated. Here, we present, to our knowledge, the most comprehensive phylogenetic analysis of the superfamilies Papilionoidea, Hesperioidea and Hedyloidea to date based on morphological and molecular data. We reconstructed their phylogenetic relationships using parsimony and Bayesian approaches. We estimated times and rates of diversification along lineages in order to reconstruct their evolutionary history. Our results suggest that the butterflies, as traditionally understood, are paraphyletic, with Papilionidae being the sister-group to Hesperioidea, Hedyloidea and all other butterflies. Hence, the families in the current three superfamilies should be placed in a single superfamily Papilionoidea. In addition, we find that Hedylidae is sister to Hesperiidae, and this novel relationship is supported by two morphological characters. The families diverged in the Early Cretaceous but diversified after the Cretaceous–Palaeogene event. The diversification of butterflies is characterized by a slow speciation rate in the lineage leading to Baronia brevicornis , a period of stasis by the skippers after divergence and a burst of diversification in the lineages leading to Nymphalidae, Riodinidae and Lycaenidae.

scholarly journals CHARACTER ASSESSMENT, GENUS LEVEL BOUNDARIES, AND PHYLOGENETIC ANALYSES OF THE FAMILY RHACOPHORIDAE:

2000 ◽  
pp. 1-31 ◽  
Author(s):  
Jeffery A. Wilkinson ◽  
Robert C. Drewes
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Current Status ◽  
Phylogenetic Hypothesis ◽  
Genus Level ◽  
The Family ◽  
Character Assessment

The first comprehensive phylogenetic analysis of the family Rhacophoridae was conducted by Liem (1970) scoring 81 species for 36 morphological characters. Channing (1989), in a reanalysis of Liem’s study, produced a phylogenetic hypothesis different from that of Liem. We compared the two studies and produced a third phylogenetic hypothesis based on the same characters. We also present the synapomorphic characters from Liem that define the major clades and each genus within the family. Finally, we summarize intergeneric relationships within the family as hypothesized by other studies, and the family’s current status as it relates to other ranoid families.

Phylogenetic analysis and taxonomy of the subgenus Gnathopaederus Chapin and related groups of Paederus s.l. (Coleoptera:Staphylinidae:Paederinae)

2009 ◽  
Vol 23 (5) ◽  
pp. 422
Author(s):  
Xiao-Yan Li ◽  
Hong-Zhang Zhou
Keyword(s):  
Phylogenetic Analysis ◽  
Type Species ◽  
Morphological Characters ◽  
Character State ◽  
Robust Solution ◽  
Current Classification ◽  
The Status ◽  
Definition Of ◽  
Taxonomic Studies ◽  
First Time

The paederine genus Paederus s.l. (Coleoptera : Staphylinidae) is a hyperdiverse group of some 500 species worldwide. Although the subtribe Paederina, in which the genus resides, is monophyletic the status of numerous genera and subgenera is questionable and the current classification is likely to be flawed. As part of detailed studies on the paederine fauna of China, we undertook a preliminary morphologically-based phylogenetic analysis to determine the relationships of Paederus (Gnathopaederus) and related subgenera, as a basis for a revision of the subgenus, and as an attempt to provide a better framework for future taxonomic studies on the group as a whole. The analysis was based on 66 adult morphological characters for 30 ingroup taxa, including all six species of P. (Gnathopaederus). The results show that P. (Gnathopaederus) and P. (Paederus), and the genera Megalopaederus, Pachypaederus and Paederidus are monophyletic, and that P. (Eopaederus) and P. (Harpopaederus) are paraphylyetic. However, our analysis did not offer a robust solution to relationships among other clades within Paederus s.l. although it seems clear that Paederus s.l. is not monophyletic with respect to the above genera. The monophyly of P. (Gnathopaederus) is supported by the mandibular basal medial tooth having two cuspids separated dorsoventrally. Based largely on this character state, the definition of the subgenus is refined; six species are recognized, including two new species described from China as follows: P. (G.) daozhenensis, sp. nov. from Guizhou, and P. (G.) jilongensis, sp. nov. from Xizang; three species, P. bursavacua Willers, P. yunnanensis Willers and P. solodovnikovi Willers, are newly assigned to the subgenus according to a revised subgeneric definition. New morphological characters including important secondary sexual characters and sexual dimorphism are described and male genitalia are illustrated for the first time for the type species of the subgenus, P. (G.) szechuanus (Chapin). A key to the six species is presented and the distribution of each species is documented and discussed.

Worldwide revision of the genus Phaenoglyphis (Hymenoptera, Cynipoidea, Figitidae, Charipinae)

2019 ◽  
Vol 50 (2) ◽  
pp. 235-296 ◽  
Author(s):  
Mar Ferrer-Suay ◽  
Jesús Selfa ◽  
Noel Mata-Casanova ◽  
Nicolas Pérez Hidalgo ◽  
Juli Pujade-Villar
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Morphological Characters ◽  
Type Material ◽  
Valid Species ◽  
Key To Species ◽  
World Species ◽  
Incertae Sedis ◽  
The World ◽  
Two New Species

A complete revision of the world species of the genus Phaenoglyphis Förster, 1869 has been conducted. A total of 25 species of Phaenoglyphis are valid after studying their type material. Two new species are described: Phaenoglyphis belizini sp. n. and Phaenoglyphis palmirae sp. n. Two species are synonymized: P. dolichocera (Cameron, 1889) with P. nigripes (Thomson, 1877) and P. pecki Andrews, 1978 with P. villosa (Hartig, 1841). Phaenoglyphis bangalorensis Kurian, 1953 was considered as incertae sedis. Phaenoglyphis duplocarpentieri (Kieffer, 1904) and P. hedickei Hedicke, 1928 are considered lost. Other three species are discarded as valid species because they are missing important parts without which the species cannot be defined: P. cincta (Hartig, 1841), P. frigidus (Belizin, 1968) and P. repentinus Belizin, 1962. A complete redescription and an illustrative plate are presented. A key to species of the genus Phaenoglyphis is given. Phylogenetic analysis based on morphological characters has been performed.

A phylogenetic analysis of the tribe Triticeae (Poaceae) based on morphological characters of the genera

1983 ◽  
Vol 61 (2) ◽  
pp. 518-535 ◽  
Author(s):  
Bernard R. Baum
Keyword(s):  
Phylogenetic Analysis ◽  
Genetic Information ◽  
Evolutionary Model ◽  
Morphological Characters ◽  
Compatibility Analysis ◽  
Character Compatibility ◽  
Dollo Parsimony ◽  
Tribe Triticeae ◽  
Transformation Series

A phylogenetic analysis of Triticeae was performed by means of numerical methods. Five methods, each based on extreme assumptions of parameters so interpreted under Felsenstein's (1979) evolutionary model, were used: Camin–Sokal parsimony, Wagner parsimony, Dollo parsimony, polymorphism parsimony, and character-compatibility analysis. Although a considerable amount of parallelism was, for some time, suspected to have occurred in Triticeae (by Stebbins for instance) so that for this reason perhaps the assumptions of polymorphism parsimony might be most suitable for phylogenetic analysis, the five methods were used because the evolutionary assumptions for each investigated character are, and probably will long remain, unknown.Data input consisted of sets of hypothesized transformation series, each set subjected to analyses using the five methods. Results of an analysis provided the basis for altering the set of hypothesized transformation series for subsequent analysis. Analyses were carried out repeatedly until stabilization; that is until, in the author's judgment, the most parsimonious solution was arrived at and further trials were of diminishing return. The most parsimonious tree obtained served as a base for subsequent elaboration of the final tree, taking into consideration genetic information primarily, and for the erection of the proposed phylogenetic classification of Triticeae. A key is provided for identification of the groupings in the tribe. The proposed classification is discussed in the light of previous classifications, even though none of them were phylogenetic in the sense of Hennig.

scholarly journals Molecular phylogenetic analysis of the Paguristes tortugae Schmitt, 1933 complex and selected other Paguroidea (Crustacea: Decapoda: Anomura)

Zootaxa ◽  
2021 ◽  
Vol 4999 (4) ◽  
pp. 301-324
Author(s):  
CATHERINE W. CRAIG ◽  
DARRYL L. FELDER
Keyword(s):  
Phylogenetic Analysis ◽  
Species Complex ◽  
Morphological Characters ◽  
Undescribed Species ◽  
Mtdna Sequences ◽  
Approximately Unbiased ◽  
Western Atlantic ◽  
Family Level ◽  
Molecular Phylogenetic ◽  
Similarities And Differences

Morphological characters, as presently applied to describe members of the Paguristes tortugae Schmitt, 1933 species complex, appear to be of limited value in inferring phylogenetic relationships within the genus, and may have similarly misinformed understanding of relationships between members of this complex and those presently assigned to the related genera Areopaguristes Rahayu & McLaughlin, 2010 and Pseudopaguristes McLaughlin, 2002. Previously undocumented observations of similarities and differences in color patterns among populations additionally suggest genetic divergences within some species, or alternatively seem to support phylogenetic groupings of some species. In the present study, a Maximum Likelihood (ML) phylogenetic analysis was undertaken based on the H3, 12S mtDNA, and 16S mtDNA sequences of 148 individuals, primarily representatives of paguroid species from the western Atlantic. This molecular analysis supported a polyphyletic Diogenidae Ortmann, 1892, although incomplete taxonomic sampling among the genera of Diogenidae limits the utility of this finding for resolving family level relationships. Several hypotheses regarding the evolutionary relationships among hermit crab genera were refuted by the Kishino-Hasegawa (KH). Shimodaira-Hasegawa (SH) and Approximately Unbiased (AU) tree topology tests, among them the hypothesis that Areopaguristes is monophyletic. A lack of support for the monophyly of Areopaguristes calls into question the phylogenetic validity of gill number for the differentiation of Paguristes, Areopaguristes, and Pseudopaguristes. The study was inconclusive with regard to the relationships among these three genera, but previously unknown diversity within both Paguristes and Areopaguristes was demonstrated. Existence of an undescribed species confounded under the name Paguristes tortugae Schmitt, 1933 was supported by genetics, morphology, and coloration. A second undescribed species with remarkable similarity to Areopaguristes hummi Wass, 1955 was discovered based on genetics and coloration.

Morphological phylogeny and taxonomic revision of the former antlion subtribe Periclystina (Neuroptera: Myrmeleontidae: Dendroleontinae)

Zootaxa ◽  
2020 ◽  
Vol 4796 (1) ◽  
pp. 1-322
Author(s):  
RENATO JOSE PIRES MACHADO ◽  
JOHN DAVID OSWALD
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Phylogenetic Relationships ◽  
Taxonomic Revision ◽  
New Guinea ◽  
Morphological Characters ◽  
Valid Species ◽  
New Combinations ◽  
New Genera ◽  
Parsimony Analysis

The species of the former antlion subtribe Periclystina (Neuroptera: Myrmeleontidae) are revised. Prior to this work Periclystina comprised 10 genera and 63 species endemic to Australia (62 spp.) and New Guinea (1 sp.). In this work two former genera are synonymized and four new genera are proposed (for a total of 12 valid genera), and six former species are synonymized and 16 new species are proposed (for a total of 73 valid species). A parsimony analysis utilizing 62 morphological characters is used to infer phylogenetic relationships among all 73 species, and suitable outgroups. Based on the results of the phylogenetic analysis, the tribal and/or generic assignments of 55 (75%) of former Periclystina species are modified here. Periclystina and its two largest genera—Austrogymnocnemia and Glenoleon—were all recovered as polyphyletic in their former circumscriptions. Ten species—placed here in six genera: Anomaloplectron, Csiroleon, Fissuleon gen. nov., Franzenia, Fusoleon and Latileon gen. nov.—clustered phylogenetically with Acanthoplectron and are transferred to the tribe Acanthoplectrini. The remaining 63 species—placed in six additional genera: Austrogymnocnemia, Glenoleon, Megagonoleon gen. nov., Minyleon gen. nov., Periclystus and Riekoleon—form a monophyletic Periclystus genus group and are transferred to the tribe Dendroleontini. All 73 species are (re)described and illustrated. New identification keys are provided for the tribes of Dendroleontinae, for the Australian genera of Acanthoplectrini and Dendroleontini, and for each of the non-monotypic genera treated. In addition, five new lectotypes are designated and 35 new combinations are created. 

scholarly journals Proposal of Tiddergasilus gen. nov. (Ergasilidae: Cyclopoida) for T. iheringi comb. nov. from the gills of Hoplias malabaricus (Erythrinidae: Characiformes) from Brazil

2018 ◽  
Vol 35 ◽  
pp. 1-6 ◽  
Author(s):  
Taísa Mendes Marques ◽  
Walter A. Boeger
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Morphological Characters ◽  
Neotropical Region ◽  
Valid Species ◽  
Type Specimens ◽  
Hoplias Malabaricus ◽  
Neotropical Species ◽  
Number Of Segments

Ergasilus von Nordmann, 1832 is the type and the most speciose genus of Ergasilidae, with more than 150 valid species. The first species of this genus, Ergasilusiheringi Tidd, 1942, was described from the Neotropical Region, from the gills of Hopliasmalabaricus (Bloch, 1794). Since then, 35 new species of Ergasilidae have been described from the Neotropics. However, a reanalysis of the available type specimens of E.iheringi revealed features that suggest that it represents a lineage independent from Ergasilus. Consequently, we propose Tiddergasilus gen. nov. (Ergasilidae: Cyclopoida) to accommodate T.iheringi (Tidd, 1942) comb. nov. The species was re-examined and redescribed based on available type specimens. Tiddergasilus gen. nov. is characterized by species with exopod of leg 4 2-segmented; antenna small and robust, with a short second segment (approximately three times shorter than the first segment), and claw with a unique morphology (short, recurved with a sub-proximal indentation in the inner margin). A phylogenetic analysis, based on a matrix of 15 taxa and 16 morphological characters in PAUP* software 4.0a152, resulted in 15 equally parsimonious trees. Based on this analysis, Tiddergasilus is closely related to a group composed of Neotropical species of Ergasilus – sharing with them antennule with 6-segments. When the highly homoplastic character “number of segments in the antennule” is removed from the analysis, Tiddergasilus forms a polytomy with the clade of genera of the former Vaigamidae, Ergasilus, and the clade Rhinergasilus+Brasergasilus+Pindapixara.

Cladistic analysis of the tribe Torneutini Thomson (Coleoptera: Cerambycidae: Cerambycinae: Trachyderoinia)

Zootaxa ◽  
2005 ◽  
Vol 1062 (1) ◽  
pp. 1 ◽  
Author(s):  
MARCELA LAURA MONNÉ ◽  
DILMA SOLANGE NAPP
Keyword(s):  
Phylogenetic Analysis ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Generic Level ◽  
Phylogenetic Classification ◽  
Genus Level ◽  
First Time

A generic-level phylogenetic analysis of the tribe Torneutini Thomson, 1860 is presented based on 72 morphological characters for 39 terminal taxa of which, 31 are representatives of the Torneutini genera. The outgroup includes eight representatives from other tribes. A hypothesis of monophyly for supertribe Trachyderoinia Dupont, 1836 (sensu Fragoso, Monné and Seabra 1987) is presented for the first time. Torneutini, as currently recognized, was shown to be paraphyletic. In order to eliminate this condition, Bothriospilina Lane, 1950 is raised herein to tribe level. Torneutini, as herein defined, comprises the following genera in parenthetic notation: (Macellidiopygus (Psygmatocerus (Gigantotrichoderes (Spathopygus + Coccoderus) (Gnathopraxithea + Praxithea) (Torneutopsis (Torneucerus + Diploschema) (Torneutes (Dragomiris + Dragoneutes) (Thaumasus + Xenambyx)))))). The maintenance of Macellidiopygus in Torneutini needs further investigating. Bothriospilini Lane, 1950, new status, includes in parenthetic notation: ((Ranqueles + Scapanopygus) (Taygayba (Delemodacrys (Bothriospila + Timbaraba))) (Gnaphalodes (Knulliana + Chlorida)))). The position of Chrotoma is still no certain, and it is tentatively included in Bothriospilini. The results indicate that Bothriospilini is closely related to Trachyderini, Pyrestini and Basipterini. A phylogenetic classification of Trachyderoinia at tribe level, and of Torneutini and Bothriospilini at genus level, is proposed.

Description of Poecilia (Acanthophacelus) obscura n. sp., (Teleostei: Poeciliidae), a new guppy species from western Trinidad, with remarks on P. wingei and the status of the “Endler’s guppy”

Zootaxa ◽  
2009 ◽  
Vol 2266 (1) ◽  
pp. 35-50 ◽  
Author(s):  
SUSANNE SCHORIES ◽  
MANFRED K. MEYER ◽  
MANFRED SCHARTL
Keyword(s):  
Phylogenetic Analysis ◽  
Mitochondrial Dna ◽  
New Species ◽  
Species Complex ◽  
Valid Species ◽  
The Status ◽  
Molecular Phylogenetic ◽  
Cryptic Species Complex ◽  
The Common ◽  
Definition Of

Poecilia obscura, new species, is described from the Oropuche system, Trinidad. A mitochondrial DNA-sequence based molecular phylogenetic analysis revealed the status of the new species as a separate taxon. It is most closely related to the Common guppy, P. reticulata and to the recently described species, P. wingei. It can also be distinguished by morphometrics and gonopodial characteristics from these two species, although the ranges for all values overlap. A definition of the new species on morphology criteria alone is thus impossible. Therefore, P. obscura forms a cryptic species complex with the two other species. P. wingei is now unequivocally defined by the molecular phylogeny as a valid species. The three guppy species are included in the subgenus Acanthophacelus Eigenmann (1907), which is considered as generically different from all other taxa of the Poeciliinae sensu Parenti (1981).

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