Phylogenetic analysis of Gigantodax (Diptera: Simuliidae)

2005 ◽  
Vol 36 (2) ◽  
pp. 219-239
Author(s):  
Paulina Muñoz De Hoyos ◽  
Daniel Rafael Miranda-Esquivel ◽  
Nelsy Rocío Pinto-Sánchez
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Morphological Characters ◽  
Frequency Index ◽  
Species Groups

AbstractA study of the monophyly and phylogenetic relationships among the Gigantodax species-groups was conducted using all Gigantodax species and six outgroups. This analysis was conducted using 71 characters, 58 of them morphological characters derived from 66 species, and 13 of them cytological characters from 11 species. We conducted two analyses under linear parsimony and implied weights. To define the best concavity value we used the frequency index. The value that recovered the most of the groups was linear parsimony search. We obtained 2037 equally parsimonious trees of 277 steps (CI=0.37 RI=0.65). The second value to recover most of the groups was implied weight search with the concavity value of one. Only the igniculus and minor groups were recovered by both analyses (linear parsimony and implied weights K=1). Under linear parsimony the phylogenetic analysis recovered two species groups (igniculus and cormonsi). The remaining four groups (“brophyi”, “cilicinus”, “minor”, and “wrighti”) are non-monophyletic. Based on the cladogram we suggest the following species groups: igniculus (igniculus group), cormonsi (cormonsi group), minor (containing “minor” + “multifilis”), brophyi (G. antarcticus, G. brophyi, G. femineus, G. rufidulus, and G. trifidus), shannoni (containing G. bettyae, G. incomitatus, G. mariobordai, G. pennipunctus, G. septenarius, and G. shannoni), and rufescens (containing G. aquamarensis, G. arrarteorum, G. basinflatus, G. cervicornis, G. cilicinus, G. clandestinus, G. corniculatus, G. cypellus, G. dryadicaudicis, G. herreri, G. horcotiani, G. impossibilis, G. incapucara, G. nasutus, G. rufescens, and G. wrighti). Some species, previously assigned to “cilicinus”, “wrighti”, and “brophyi” groups are kept as inquerandae.

Phylogenetic analysis of the subfamily Hylodinae (Anura, Leptodactylidae) based on morphological characters

2005 ◽  
Vol 26 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Francisca do Val ◽  
Paulo Nuin
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Maximum Parsimony ◽  
Morphological Characters ◽  
The Other ◽  
The Family

AbstractThe systematics and phylogenetic relationships of the family Leptodactylidae are controversial as is the intrafamilial phylogeny of the leptodactylids. Here we analyze the relationships of the leptodactylid subfamily Hylodinae. This subfamily has been considered to be monophyletic and composed of three genera, Hylodes, Crossodactylus and Megaelosia. In the present study 49 characters were used, based on different studies on Leptodactylidae phylogeny. Maximum parsimony methods with unweighted and successively weighted characters were used to estimate the phylogeny of the Hylodinae. Upon analysis, the data provided further evidence of the monophyletic status of the three genera, with Megaelosia being the basal genus and the other two genera being sister taxa. The analysis with successive weighting results in a more resolved topology of the species subgroups of the genus Hylodes and separates this genus from Crossodactylus and confirms that the hylodines are monophyletic.

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 Restructuring the Ancorabolidae Sars (Copepoda, Harpacticoida) and Cletodidae T. Scott, with a new phylogenetic hypothesis regarding the relationships of the Laophontoidea T. Scott, Ancorabolidae and Cletodidae

2020 ◽  
Vol 96 (2) ◽  
pp. 455-498
Author(s):  
Kai Horst George
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Morphological Characteristics ◽  
Sister Group ◽  
Morphological Characters ◽  
Sister Group Relationship ◽  
Phylogenetic Hypothesis ◽  
The Family ◽  
Swimming Leg

Uncovering the systematics of CopepodaHarpacticoida, the second-most abundant component of the meiobenthos after Nematoda, is of major importance for any further research dedicated especially to ecological and biogeographical approaches. Based on the evolution of the podogennontan first swimming leg, a new phylogenetic concept of the Ancorabolidae Sars and Cletodidae T. Scott sensu Por (Copepoda, Harpacticoida) is presented, using morphological characteristics. It confirms the polyphyletic status of the Ancorabolidae and its subfamily Ancorabolinae Sars and the paraphyletic status of the subfamily Laophontodinae Lang. Moreover, it clarifies the phylogenetic relationships of the so far assigned members of the family. An exhaustive phylogenetic analysis was undertaken using 150 morphological characters, resulting in the establishment of a now well-justified monophylum Ancorabolidae. In that context, the Ancorabolus-lineage sensu Conroy-Dalton and Huys is elevated to sub-family rank. Furthermore, the membership of Ancorabolina George in a rearranged monophylum Laophontodinae is confirmed. Conversely, the Ceratonotus-group sensu Conroy-Dalton is transferred from the hitherto Ancorabolinae to the Cletodidae. Within these, the Ceratonotus-group and its hypothesised sister-group Cletodes Brady are combined to form a monophyletic subfamily Cletodinae T. Scott, subfam. nov. Consequently, it was necessary to restructure the Ancorabolidae, Ancorabolinae and Laophontodinae and extend the Cletodidae to include the displacement and exclusion of certain taxa. Moreover, comparison of the Ancorabolidae, Cletodidae, Laophontoidea and other Podogennonta shows that the Ancorabolidae and Cletodidae form sister-groups in a monophylum Cletodoidea Bowman and Abele, which similarly has a sister-group-relationship with the Laophontoidea T. Scott. According to the present study, both taxa constitute a derived monophylum within the Podogennonta Lang.

scholarly journals A BARCODE-BASED PHYLOGENETIC SCAFFOLD FOR XYSTICUS AND ITS RELATIVES (ARANEAE: THOMISIDAE: CORIARACHNINI)

2019 ◽  
Vol 20 ◽  
pp. 198-206 ◽  
Author(s):  
Rainer Breitling
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Barcoding ◽  
Phylogenetic Relationships ◽  
Genetic Data ◽  
Target Area ◽  
Starting Point ◽  
Main Target ◽  
Holarctic Region ◽  
Species Groups ◽  
Crab Spider

The phylogenetic relationships and taxonomy of the crab spider genus Xysticus and its closest relatives (i.e., the tribe Coriarachnini, also including, e.g., Ozyptila, Coriarachne and Bassaniana) have long been controversial, with several alternative classifications being proposed, none of which has gained universal acceptance. As Coriarachnini is largely confined to the Holarctic region, the main target area of recent DNA barcoding projects for spiders, a large amount of genetic data for the group is now publicly available. The results of a phylogenetic analysis of this sequence dataset are largely congruent with earlier morphology-based results regarding the evolutionary structure of the group. In particular, they highlight the fact that Xysticus s. lat. is a paraphyletic assembly and that several species groups need to be placed in separate genera to achieve monophyly of Xysticus s. str. Similarly, Coriarachne and Bassaniana appear as independent clades rather than a joined monophyletic Coriarachne s. lat. In contrast, further subdivision of Ozyptila is not supported by the genetic data. Importantly, the analysis also shows that anapophysate members of Xysticus s. lat. form two widely separated groups: a primarily anapophysate division, also including Coriarachne and Bassaniana, at the base of Xysticus s. lat., and a secondarily anapophysate clade deeply nested within Xysticus s. str. This might explain some of the earlier difficulties when trying to define generally accepted subgroups within Xysticus s. lat. The phylogenetic scaffold based on barcode sequences is sufficiently dense and well resolved to attempt the tentative and provisional placement of the majority of species in Xysticus s. lat. in the independent genera Xysticus s. str., Bassaniodes, Psammitis and Spiracme as a starting point for a future more formal revision of the group.

Revisited phylogeny of Bethylinae (Hymenoptera, Bethylidae) solves basal polytomy

2020 ◽  
Vol 51 (3) ◽  
pp. 296-346
Author(s):  
Magno S. Ramos ◽  
Celso O. Azevedo
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Morphological Characters ◽  
Female Characters ◽  
Wing Morphology ◽  
Male And Female ◽  
Strongly Convex ◽  
The Family ◽  
Males And Females ◽  
First Time

Bethylinae are a morphologically well-defined subfamily of Bethylidae, with remarkable characters, such as strongly convex clypeal carina and bifid and angled tarsal claws. However, there is no consensus about the phylogenetic relationships among the genera within the family, regarding mainly Eupsenella and Lytopsenella. To resolve this problem, a phylogeny of the Bethylinae is inferred based on parsimony analyses separately of 43 and 44 morphological characters for males and females, respectively. We performed combined analyses of both sexes with 49 morphological characters, including genitalia. We present a phylogenetic analysis, including a total 118 species of Bethylinae. Male and female characters were included in these analyses. We discuss wing morphology and deformability of forewings for the first time. In summary, the basal polytomy was solved for the first time. Seven of the eight genera were recovered as monophyletic groups. The unique exception is Goniozus, which was retrieved as paraphyletic in all topologies.

Phylogenetic analysis of the rumen ciliate family Ophryoscolecidae based on 18S ribosomal RNA sequences, with new sequences fromDiplodinium,Eudiplodinium, andOphryoscolex

1997 ◽  
Vol 75 (6) ◽  
pp. 963-970 ◽  
Author(s):  
André-Denis G. Wright ◽  
Denis H. Lynn
Keyword(s):  
Phylogenetic Analysis ◽  
Ribosomal Rna ◽  
Phylogenetic Relationships ◽  
Cladistic Analysis ◽  
Morphological Characters ◽  
Small Subunit ◽  
Base Pairs ◽  
Rna Sequences ◽  
Ribosomal Rna Sequences ◽  
The Family

Phylogenetic relationships within the largest family of entodiniomorphid rumen ciliates, the Ophryoscolecidae, were inferred from comparisons of small-subunit ribosomal RNA gene sequences. These included three new sequences from Diplodinium dentatum (1638 base pairs (bp)), Eudiplodinium maggii (1637 bp), and Ophryoscolex purkynjei (1636 bp). Using morphological characters, Lubinsky constructed a cladogram of the Ophryoscolecidae, and on the basis of his analysis, he divided the family into three subfamilies (Entodiniinae, Diplodiniinae, Ophryoscolecinae) to reflect his "natural" groupings (G. Lubinsky. 1957. Can. J. Zool. 35: 141 – 159). Our cladistic analysis, based on the limited morphological and ultrastructural data available, indicates that there are no synapomorphies supporting the Diplodiniinae sensu Lubinsky. However, based upon the six 18S sequences for the Ophryoscolecidae, the rumen ciliates are monophyletic and fall into three distinct groups corresponding to Lubinsky's subfamilial division of the family. Our molecular analysis shows Entodinium to be the earliest branching rumen ciliate (subfamily Entodiniinae) and Eudiplodinium, not Diplodiium, branching first among the diplodiniines.

Simulium (Hearlea) Vargas, Mart nez Palacios, & D az N jera (Diptera: Simuliidae): Taxonomic revision and cladistic analysis

Zootaxa ◽  
2004 ◽  
Vol 396 (1) ◽  
pp. 1 ◽  
Author(s):  
S. COSCARÓN ◽  
D. R. MIRANDA ESQUIVEL ◽  
J. K. MOULTON ◽  
C. L. COSCARÓNARIAS ◽  
S. IBAÑEZ BERNAL
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Cladistic Analysis ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Character Weighting ◽  
Species Groups ◽  
Geographic Distributions ◽  
Weighting Methods

Simulium (Hearlea) Vargas, Mart nez Palacios, & D az N jera 1957 is comprised of 20 known species that are largely confined to the area between M xico and Guatemala. Herein, all currently recognized species within this subgenus are described, illustrated, keyed (except males), and subjected to phylogenetic analysis. Geographic distributions for each species are also updated. Simulium deleoni Vargas, 1945, is synonymized with S. capricorne De Le n, 1944. Simulium paracarolinae new species, from Guatemala, is described from the larva. A cladistic analysis of all Hearlea species and representatives from three outgroups was conducted using 39 morphological characters. Although different character weighting methods yielded different topologies, all trees agreed that Hearlea is monophyletic is comprised of two species groups, based mainly upon characters of the larva and pupa: the Simulium juarezi group S. ayrozai Vargas, S. burchi Dalmat, S. canadense Hearle, S. capricorne De Le n, S. chiriquiense Field, S. contrerense D az N jera & Vulcano, S. dalmati Vargas & D az N jera, S. delatorrei Dalmat, S. estevezi Vargas, S. ethelae Dalmat, S. juarezi Vargas & D az N jera, S. microbranchium Dalmat, and S. nigricorne Dalmat and the S. carolinae group Simulium (Hearlea) carolinae De Le n, S. gorirossiae Vargas & D az N jera, S. johnsoni Vargas & D az N jera, S. larvispinosum De Le n, S. menchacai Vargas & D az N jera, S. paracarolinae n. sp., and S. temascalense D az N jera & Vulcano.

Immunological Evidence on Relationships of Some Australian Terrestrial Frogs (Anura, Hylidae, Pelodryadinae)

1986 ◽  
Vol 34 (4) ◽  
pp. 575 ◽  
Author(s):  
MN Hutchinson ◽  
LR Maxson
Keyword(s):  
Serum Albumin ◽  
Related Species ◽  
Phylogenetic Relationships ◽  
Complement Fixation ◽  
Morphological Characters ◽  
Body Proportions ◽  
Species Complexes ◽  
Adaptive Radiations ◽  
Species Groups ◽  
Evolutionary Lineages

Phylogenetic relationships of ground-dwelling hylid frogs have been studied by micro-complement fixation comparisons of serum albumin. These analyses show that this group of frogs is not monophyletic. Two distantly related species-complexes are identified: a lesueuri complex, containing the lesueuri and booroolongensis species-groups of Tyler and Davies; and a freycineti complex, consisting of the freycineti, coplandi, latopalmata and nigrofrenata species-groups. Among the frogs studied, the nearest relative of the lesueuri complex is L. serrata, whereas the closest relatives of the freycineti complex include the L. meiriana and L. ewingi species-groups. Within each complex the species are very closely related to one another, suggesting that both lineages recently have undergone adaptive radiations. These relationships correlate well with some of the morphological characters used by Tyler and Davies to establish species- groups within Litoria. Our results are at variance with the conclusions of Tyler and Davies who used features of biology and body proportions to establish possible evolutionary lineages within Litoria.

Phylogenetic analysis and reclassification of the genus Priochirus Sharp (Coleoptera:Staphylinidae:Osoriinae)

2007 ◽  
Vol 21 (1) ◽  
pp. 73 ◽  
Author(s):  
Jie Wu ◽  
Hong-Zhang Zhou
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Phylogenetic Relationships ◽  
Cladistic Analysis ◽  
Phylogenetic Inference ◽  
Sister Group ◽  
Rove Beetle ◽  
New Subgenus ◽  
Species Groups ◽  
Sister Relationships

The genus Priochirus Sharp (Coleoptera : Staphylinidae) is a rove beetle group with great variation in cephalic structures, especially the teeth on the frontal margin of head. In this paper, phylogenetic relationships among ten subgenera of the genus Priochirus sensu lato, and of Priochirus and other genera of the tribe Leptochirini are analysed. A cladistic analysis was conducted based on 62 characters of adult morphology. Results indicate that the genus Priochirus is not a monophyletic group and is divided into two lineages (called here Lineages I and II respectively). The subgenus Euleptarthrus Jakobson, which included three species-groups (japonicus, longicornis and malayanus), is shown to be polyphyletic. Lineage I corresponds with the Leiochirus + (Exochirus + Syncampsochirus) + (Eutriacanthus + (Plastus + (japonicus-group of Euleptarthrus + (Barychirus + Stigmatochirus)))) clade and forms a sister group to the genus Thoracochirus Bernhauer. Lineage II corresponds with the Priochirus, s. str. + (Cephalomerus + (longicornis- and malayanus-group of the Euleptarthrus)) clade. In addition, the analysis reveals sister relationships between representatives of Lineage I and the genus Thoracochirus. On the basis of phylogenetic inference, the genus Plastus Bernhauer, stat. nov. is proposed to include the subgenera of Lineage I and a new subgenus Sinumandibulus, subgen. nov., which is erected for the japonicus-group of the former subgenus Euleptarthrus. The genus Priochirus Sharp sensu novo is redefined to include the subgenera of Lineage II. Seven new species are described from China: Plastus (Sinumandibulus) curvaticornis, sp. nov. from Sichuan; Plastus (Sinumandibulus) recticornis, sp. nov. from Hubei; Priochirus (Euleptarthrus) amblyodontus, sp. nov. from Hunan; Priochirus (Euleptarthrus) baoxingensis, sp. nov. from Sichuan, Priochirus (Euleptarthrus) elongates, sp. nov. from Guizhou, Priochirus (Euleptarthrus) parvicornis, sp. nov. from Fujian and Priochirus (Euleptarthrus) oxygonus, sp. nov. from Hainan.

Phylogenetic analysis of the small fungivorous family Merothripidae (Thysanoptera)

2011 ◽  
Vol 42 (4) ◽  
pp. 385-409
Author(s):  
Veronica Pereyra
Keyword(s):  
Phylogenetic Analysis ◽  
Phylogenetic Relationships ◽  
Sister Group ◽  
Morphological Characters ◽  
First Approximation ◽  
Close Relatives

AbstractA phylogenetic analysis of the fungivorous Terebrantia family Merothripidae is performed based on 73 morphological characters and 24 taxa representing the three genera of Merothripidae and outgroups. Heterothrips mexicanus Watson, Heterothripidae; Dorythrips Hood, Melanthripidae; and two genera of Aeolothripidae,Gelothrips Bhatti and Orothrips Moulton represent the outgroup. The Melanthripidae and Aeolothripidae genera are included in order to have a first approximation of the phylogenetic relationships between Merothripidae and these two families (previously suggested to be close relatives). According to the results, the monophyly of Merothripidae is recovered; within Merothripidae, Erotidothrips is the sister group of Damerothrips+Merothrips. Dorythrips is supported as the sister group of Merothripidae, and Aeolothripidae are the sister group to that clade. Additionally, Merothripidae genera are diagnosed and illustrated.

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