Relationships of spartaeine and other primitive jumping spiders, with reviews of Cyrba and Cocalus and description of a new genus (Arachnida: Araneae: Salticidae).
Item
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Title
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Relationships of spartaeine and other primitive jumping spiders, with reviews of Cyrba and Cocalus and description of a new genus (Arachnida: Araneae: Salticidae).
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Identifier
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AAI9720152
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identifier
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9720152
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Creator
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Wijesinghe, Dilrukshan Priyantha.
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Contributor
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Adviser: Norman I. Platnick
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Date
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1997
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Language
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English
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Publisher
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City University of New York.
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Subject
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Biology, Entomology | Biology, Zoology
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Abstract
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The first part of this thesis is a phylogenetic analysis of several groups of primitive salticid spiders, together with exemplars of advanced salticids. These groups include the lyssomanines, spartaeines, and the Holcolaetis and Cocalodes groups. The phylogenetic analysis is preceded by accounts of previous attempts at classifying salticids and hypotheses of salticid relatives, followed by descriptions of the methods of data gathering and analysis employed, and an overview of salticid morphology. Characters used in the analysis are described and illustrated with line drawings. A total of 32 terminal taxa and 62 characters are utilized in the analysis, with a clubionid as the outgroup. The data are subjected to parsimony analysis, unweighted, with successive approximations weighting, and under implied weights. All the results agree on the following points, among others: monophyly of lyssomanines, monophyly of non-lyssomanine salticids, monophyly of spartaeines, monophyly of higher salticids plus spartaeines, and monophyly of the Gelotia-Cocalus group within the spartaeinae. Based on the systematic analysis the subfamilies Lyssomaninae and Salticinae are redefined and the salticine tribes Holcolaetini, Cocalodini, Spartaeini and Salticini proposed. The lyssomanine Pandisus is synonymized with Asemonea, and the spartaeine Gelotia is synonymized with Cocalus. The second part of the thesis consists of a review, with phylogenetic analysis, of the spartaeine genus Cyrba. Cyrba india based on both sexes is newly described from India. Cyrba boveyi is synonymized with Cyrba nigrimana and the female previously associated with it and another female are described as new species (Cyrba kenya and Cyrba tanzania). The third part of the thesis consists of a review, with phylogenetic analysis, of the spartaeine genus Cocalus, including species previously placed in Gelotia and one formerly misplaced in Meleon. Meleon madagascarensis is transferred to Cocalus, while Gelotia argenteolimbata is synonymized with Cocalus frenatus. Species with a carapace prominence and a distinctive palp (Cocalus sensu Wanless) are considered to represent a single widespread species. The fourth part presents the description of a new genus and species of spartaeine salticid, Lankattus monticola, occupying a basal position in the larger of two major spartaeine clades.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
