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Liu J, Xu X, Hormiga G, Yin H, Li H. Two new species of the spider genus Putaoa (Araneae, Linyphiidae) from southern China. Zootaxa 2023; 5277:553-564. [PMID: 37518304 DOI: 10.11646/zootaxa.5277.3.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Indexed: 08/01/2023]
Abstract
Two new species of the genus Putaoa Hormiga and Tu, 2008 from southern China are described, Putaoa annulata n. sp. (♂♀) and Putaoa titanoverpa n. sp. (♂♀), for a total number of five described species in this genus. Detailed descriptions and illustrations of the two new species are provided. A map of collecting localities is also provided for all five Putaoa species.
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Affiliation(s)
- Jinxin Liu
- College of Life Science; Hunan Normal University; Changsha 410081; Hunan; China.
| | - Xiang Xu
- College of Life Science; Hunan Normal University; Changsha 410081; Hunan; China.
| | - Gustavo Hormiga
- Department of Biological Sciences; The George Washington University; DC 20052; USA.
| | - Haiqiang Yin
- College of Life Science; Hunan Normal University; Changsha 410081; Hunan; China.
| | - Hao Li
- College of Life Science; Hunan Normal University; Changsha 410081; Hunan; China.
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Silva-Moreira T, Hormiga G. Revision and phylogenetics of the Neotropical sheet weaving spider genus. INVERTEBR SYST 2022. [DOI: 10.1071/is21047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The Mounded Posterior Median Eyes (MPME) clade is a group of linyphiid spiders characterized by having posterior median eyes (PME) on a mound. The species diversity of this lineage, especially in the Neotropical region, is still largely unknown. In this study, we tackled one of the MPME groups, the genus Diplothyron Millidge, 1991. We have studied numerous specimens from both museums and freshly collected specimens to monograph Diplothyron. We also compiled both morphological and behavioral data from Diplothyron and representatives of higher-level lineages within Linyphiidae and several potential MPME groups to infer the phylogenetic relationships. We redescribed the type species, Diplothyron fuscus Millidge, 1991 and described the previously unknown male, and six new species: Diplothyron ballesterosi sp. nov., D. dianae sp. nov., D. monteverde sp. nov., D. nubilosus sp. nov., D. sandrae sp. nov. and D. solitarius sp. nov. We also transferred the following species from Linyphia to Diplothyron based on the study of the type material: D. chiapasia (Gertsch & Davies, 1946) comb. nov., D. linguatulus (F.O. Pickard-Cambridge, 1902) comb. nov., D. nigritus (F.O. Pickard-Cambridge, 1902) comb. nov., D. simplicatus (F.O. Pickard-Cambridge, 1902) comb. nov. and D. trifalcatus (F.O. Pickard-Cambridge, 1902) comb. nov. Diplothyron species are mainly found in the cloud forests of Central and South America, with the distribution stretching from the Colombian Andes to the Mexican Sierra Madre across the Central American mountain chains. We also provide a detailed morphological comparison between Diplothyron and closely related genera in the MPME clade, focusing on the genital morphology, including identification keys to both the MPME genera and species of Diplothyron. Our cladistic analyses recovered Diplothyron as a monophyletic group placed within the MPME clade. A newly circumscribed lineage now includes the genera Diplothyron, Dubiaranea Mello-Leitão, 1943; Linyphia Latreille, 1804; Lomaita Bryant, 1948; Microlinyphia Gerhardt, 1928; Neriene Blackwall, 1833; Notiohyphantes Millidge, 1985; Novafrontina Millidge, 1991 and Pityohyphantes Simon, 1929.
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Dupérré N. Araneae (spiders) of South America: a synopsis of current knowledge. NEW ZEALAND JOURNAL OF ZOOLOGY 2022. [DOI: 10.1080/03014223.2021.2022722] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nadine Dupérré
- Zoological Museum Hamburg, Leibniz-Institute for the Analysis of Biodiversity Change (LIB), Center for Taxonomy and Morphology, Hamburg, Germany
- American Museum of Natural History, New York, NY, USA
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Lin SW, Lopardo L, Uhl G. Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae). Zool J Linn Soc 2021. [DOI: 10.1093/zoolinnean/zlab033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Sexual selection has been shown to drive speciation. In dwarf spiders (erigonines), males possess diverse, sexually selected prosomal structures with nuptial-gift-producing glands. The genus Oedothorax is suitable for investigating the evolution of these features due to high structural variation. We have re-delimited this genus based on a phylogenetic analysis. Ten species are Oedothorax s.s.; five are transferred back to their original generic placement; 25 remain unplaced as ‘Oedothorax’. Four junior synonymies are proposed: Callitrichia simplex to Ca. holmi comb. nov.; Gongylidioides kougianensis to G. insulanus comb. nov.; Ummeliata ziaowutai to U. esyunini comb. nov.; Oe. kathmandu to Mitrager unicolor comb. nov. Oedothorax seminolus is a junior synonym of Soulgas corticarius and the transfer of Oe. alascensis to Halorates is confirmed. The replacement name Ca. hirsuta is proposed for Ca. pilosa. The male of Callitrichia longiducta comb. nov. and the female of ‘Oedothorax’ nazareti are newly described. Thirty-eight Oedothorax species are transferred to other genera. Callitrichia spinosa is transferred to Holmelgonia. Three genera are erected: Cornitibia, Emertongone and Jilinus. Ophrynia and Toschia are synonymized with Callitrichia. Character optimization suggests multiple origins of different prosomal modification types. Convergent evolution in these traits suggests that sexual selection has played an important role in erigonine diversification.
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Affiliation(s)
- Shou-Wang Lin
- Department of General and Systematic Zoology, University of Greifswald, Germany
| | - Lara Lopardo
- Department of General and Systematic Zoology, University of Greifswald, Germany
| | - Gabriele Uhl
- Department of General and Systematic Zoology, University of Greifswald, Germany
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Cabra-García J, Hormiga G. Exploring the impact of morphology, multiple sequence alignment and choice of optimality criteria in phylogenetic inference: a case study with the Neotropical orb-weaving spider genus Wagneriana (Araneae: Araneidae). Zool J Linn Soc 2019. [DOI: 10.1093/zoolinnean/zlz088] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Abstract
We present a total evidence phylogenetic analysis of the Neotropical orb-weaving spider genus Wagneriana and discuss the phylogenetic impacts of methodological choices. We analysed 167 phenotypic characters and nine loci scored for 115 Wagneriana and outgroups, including 46 newly sequenced species. We compared total evidence analyses and molecular-only analyses to evaluate the impact of phenotypic evidence, and we performed analyses using the programs POY, TNT, RAxML, GARLI, IQ-TREE and MrBayes to evaluate the effects of multiple sequence alignment and optimality criteria. In all analyses, Wagneriana carimagua and Wagneriana uropygialis were nested in the genera Parawixia and Alpaida, respectively, and the remaining species of Wagneriana fell into three main clades, none of which formed a pair of sister taxa. However, sister-group relationships among the main clades and their internal relationships were strongly influenced by methodological choices. Alignment methods had comparable topological effects to those of optimality criteria in terms of ‘subtree pruning and regrafting’ moves. The inclusion of phenotypic evidence, 2.80–3.05% of the total evidence matrices, increased support irrespective of the optimality criterion used. The monophyly of some groups was recovered only after the addition of morphological characters. A new araneid genus, Popperaneus gen. nov., is erected, and Paraverrucosa is resurrected. Four new synonymies and seven new combinations are proposed.
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Affiliation(s)
- Jimmy Cabra-García
- Departamento de Biología, Universidad del Valle, Cali, AA, Colombia
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Gustavo Hormiga
- The George Washington University, Department of Biological Sciences, Washington, DC, USA
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Review of Trichodamon Mello-Leitão 1935 and phylogenetic placement of the genus in Phrynichidae (Arachnida, Amblypygi). ZOOL ANZ 2018. [DOI: 10.1016/j.jcz.2018.02.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Wang F, Ballesteros JA, Hormiga G, Chesters D, Zhan Y, Sun N, Zhu C, Chen W, Tu L. Resolving the phylogeny of a speciose spider group, the family Linyphiidae (Araneae). Mol Phylogenet Evol 2015; 91:135-49. [PMID: 25988404 DOI: 10.1016/j.ympev.2015.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 03/03/2015] [Accepted: 05/07/2015] [Indexed: 11/30/2022]
Abstract
For high-level molecular phylogenies, a comprehensive sampling design is a key factor for not only improving inferential accuracy, but also for maximizing the explanatory power of the resulting phylogeny. Two standing problems in molecular phylogenies are the unstable placements of some deep and long branches, and the phylogenetic relationships shown by robust supported clades conflict with recognized knowledge. Empirical and theoretical studies suggest that increasing taxon sampling is expected to ameliorate, if not resolve, both problems; however, sometimes neither the current taxonomic system nor the established phylogeny can provide sufficient information to guide additional sampling design. We examined the phylogeny of the spider family Linyphiidae, and selected ingroup species based on epigynal morphology, which can be reconstructed in a phylogenetic context. Our analyses resulted in seven robustly supported clades within linyphiids. The placements of four deep and long branches are sensitive to variations in both outgroup and ingroup sampling, suggesting the possibility of long branch attraction artifacts. Results of ancestral state reconstruction indicate that successive state transformations of the epigynal plate are associated with early cladogenetic events in linyphiid diversification. Representatives of different subfamilies were mixed together within well supported clades and examination revealed that their defining characters, as per traditional taxonomy, are homoplastic. Furthermore, our results demonstrated that increasing taxon sampling produced a more informative framework, which in turn helps to study character evolution and interpret the relationships among linyphiid lineages. Additional defining characters are needed to revise the linyphiid taxonomic system based on our phylogenetic hypothesis.
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Affiliation(s)
- Fang Wang
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Jesus A Ballesteros
- Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA
| | - Gustavo Hormiga
- Department of Biological Sciences, The George Washington University, Washington, DC 20052, USA
| | - Douglas Chesters
- Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yongjia Zhan
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Ning Sun
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Chaodong Zhu
- Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Wei Chen
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China
| | - Lihong Tu
- College of Life Sciences, Capital Normal University, Beijing 100048, PR China.
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De Laet J. Parsimony analysis of unaligned sequence data: maximization of homology and minimization of homoplasy, not minimization of operationally defined total cost or minimization of equally weighted transformations. Cladistics 2014; 31:550-567. [DOI: 10.1111/cla.12098] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2014] [Indexed: 11/30/2022] Open
Affiliation(s)
- Jan De Laet
- Göteborgs Botaniska Trädgård; Carl Skottsbergs Gata 22A SE-413 19 Göteborg Sweden
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Cabra-García J, Hormiga G, Brescovit AD. Female genital morphology in the secondarily haplogyne spider genus Glenognatha Simon, 1887 (Araneae, Tetragnathidae), with comments on its phylogenetic significance. J Morphol 2014; 275:1027-40. [PMID: 24788235 DOI: 10.1002/jmor.20280] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 03/06/2014] [Accepted: 03/24/2014] [Indexed: 11/06/2022]
Abstract
Female genital morphology of secondarily haplogyne spiders has been poorly studied, hampering the analysis of its possible phylogenetic significance. We conduct a comparative morphological study of 12 species of the secondarily haplogyne spider genus Glenognatha Simon, 1887 using scanning electron microscopy. Representatives of the closely related genera Pachygnatha Sundevall, 1823 and Dyschiriognatha Simon, 1893 were also examined. The female genitalia of Glenognatha, Dyschiriognatha, and Pachygnatha species examined are composed of a spiracle-shape gonopore, a membranous chamber, a pair of copulatory ducts (CD) leading to spermathecae and a large uterus externus (UE). The most significant variation among Glenognatha species, previously unregistered within Araneoidea, is related with the absence or presence of CD and spermathecae. In addition, several characters as the form and distribution of long stem gland ductules and compartmentalization of the UE may be important for phylogenetic inference at species and generic level. Our results corroborate the close relationship between Dyshiriognatha and Glenognatha. A table with potentially informative female genitalic characters for phylogenetic inference within Glenognatha is provided. Understanding the general structure of the female genitalia in secondarily haplogyne taxa is a crucial step in order to propose characters for phylogenetic inference and to understand its possible functional significance.
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Affiliation(s)
- Jimmy Cabra-García
- Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, 05508-090, Brazil; Laboratório Especial de Coleções Zoológicas, Instituto Butantan, São Paulo, SP, 05503-900, Brazil
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