On the males of Wagneriana roraima Levi and W. yacuma Levi (Araneae, Araneidae)

Buckup, Erica Helena; Pinto‐da‐Rocha, Ricardo

doi:10.1590/s0101-81751996000400006

Cited by 3 publications

(1 citation statement)

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“…After Levi's (1991) Levi, 1991 andW. yacuma Levi, 1991 were described (Buckup & Pinto-Da-Rocha, 1996). The feasibility to collect Wagneriana in the field (see abundance of some species in several spider surveys: Pérez- de-la Cruz et al, 2007in Mexico, Bonaldo & Dias, 2010Nogueira et.…”

Section: Araneidae Phylogenymentioning

confidence: 99%

Systematics and evolution of the orb-weaving spider genus Wagneriana F.O. Pickard-Cambridge, 1904 (Araneae; Araneidae)

Garcia¹

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Although several Neotropical genera of the family Araneidae were revised using modern taxonomic standards, species-level phylogenies and phylogenetic relationships among genera remains poorly understood. This study was designed to test the monophyly of the Neotropical araneid genus Wagneriana F. O. Pickard-Cambridge, 1904 and its phylogenetic placement by conducting a total evidence analysis. The combined matrix included 167 phenotypic characters and approximately 4,800 base pairs generated for three mitochondrial and six nuclear loci. The dataset consists of 82 terminals representing 100% of the described diversity of the genus Wagneriana (37 species after taxonomic changes) plus five undescribed species and 33 outgroup terminals of 31 species. To evaluate the phylogenetic significance of the phenotypic evidence, comparisons between total evidence analyses and molecular-only analyses were conducted. In addition, to evaluate the effect of the alignment and optimality criteria, multiple analytical approaches were conducted using the programs POY, TNT, RAxML, GARLI, IQtree and MrBayes. In general, the results obtained across the different approaches showed congruence. In all the cases, W. carimagua Levi, 1991 and W. uropygialis Levi, 1991 were nested within the genera Parawixia F. O. Pickard-Cambridge, 1904 and Alpaida O. Pickard-Cambridge, 1889, respectively, and the remaining nominal species of the genus Wagneriana fell into three main clades, neither of which formed a pair of sister taxa. However, sister-group relationships of the main clades, as well as, its internal relationships were strongly influenced by the employed analytical approach. The election of alignment criteria had comparable topological effects to that of optimality criteria. Within the maximum likelihood context, the program choice affected the maximization of the likelihood score and the tree topology. Although phenotypic evidence comprised only 2.80-3.05% of the total evidence matrices, it had impact in support values and topology. In general, the inclusion of phenotypic evidence, irrespective of the optimality criterion used, increased the support values of several ingroup and outgroup clades. Furthermore, the monophyly of several clades was only recovered with the addition of phenotypic characters. In accordance with the phylogenetic results, a new araneid genus is proposed and Paraverrucosa Mello-Leitão, 1939 is resurrected. Moreover, five Wagneriana species are newly described and complementary descriptions for seven species are provided. This study presents the first total evidence phylogenetic analysis of a Neotropical Araneidae genus and discusses the impact of the inclusion of phenotypic evidence and the choice of alignment and optimality criteria in phylogenetic analyses.

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Section: Araneidae Phylogenymentioning

confidence: 99%

Systematics and evolution of the orb-weaving spider genus Wagneriana F.O. Pickard-Cambridge, 1904 (Araneae; Araneidae)

Garcia¹

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A geometric morphometric analysis of two sympatric species of the family Aeglidae (Crustacea, Decapoda, Anomura) from the La Plata basin

Giri¹,

Collins

2004

Italian Journal of Zoology

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The crustaceans of the family Aeglidae are endemic to the southern regions of South America. Geometric morphometrics was used to assess differences in size and shape between two sympatric species of the family, A. uruguayana and A. platensis. Eleven landmarks on the dorsal region of the cephalothorax were recorded on 57 adult specimens. Interspecific and intraspecific differences in size and shape were analyzed through univariate and multivariate statistics performed on the generalized procrustes analysis aligned coordinates. Shape differences between A. uruguayana and A. platensis, and between males and females, were readily identifiable along the first and the second relative warp. MANOVA showed these differences to be significant. Intraspecific comparisons also revealed a significant sexual dimorphism in cephalothorax shape. Two-way ANOVA on centroid size did not show any significant difference between species nor between sexual.

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Species conservation profiles of a random sample of world spiders I: Agelenidae to Filistatidae

Seppälä¹,

Henriques²,

Draney³

et al. 2018

BDJ

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BackgroundThe IUCN Red List of Threatened Species is the most widely used information source on the extinction risk of species. One of the uses of the Red List is to evaluate and monitor the state of biodiversity and a possible approach for this purpose is the Red List Index (RLI). For many taxa, mainly hyperdiverse groups, it is not possible within available resources to assess all known species. In such cases, a random sample of species might be selected for assessment and the results derived from it extrapolated for the entire group - the Sampled Red List Index (SRLI). With the current contribution and the three following papers, we intend to create the first point in time of a future spider SRLI encompassing 200 species distributed across the world.New informationA sample of 200 species of spiders were randomly selected from the World Spider Catalogue, an updated global database containing all recognised species names for the group. The 200 selected species where divided taxonomically at the family level and the familes were ordered alphabetically. In this publication, we present the conservation profiles of 46 species belonging to the famillies alphabetically arranged between Agelenidae and Filistatidae, which encompassed Agelenidae, Amaurobiidae, Anyphaenidae, Araneidae, Archaeidae, Barychelidae, Clubionidae, Corinnidae, Ctenidae, Ctenizidae, Cyatholipidae, Dictynidae, Dysderidae, Eresidae and Filistatidae.

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On the males of Wagneriana roraima Levi and W. yacuma Levi (Araneae, Araneidae)

Abstract: ABSTRACT. The males of Wagneriana roraima Levi, 1991 and W yacuma Levi, 1991 are described and illustrated for the first time.

Cited by 3 publications

References 1 publication

Systematics and evolution of the orb-weaving spider genus Wagneriana F.O. Pickard-Cambridge, 1904 (Araneae; Araneidae)

Systematics and evolution of the orb-weaving spider genus Wagneriana F.O. Pickard-Cambridge, 1904 (Araneae; Araneidae)

A geometric morphometric analysis of two sympatric species of the family Aeglidae (Crustacea, Decapoda, Anomura) from the La Plata basin

Species conservation profiles of a random sample of world spiders I: Agelenidae to Filistatidae

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