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    An overview of Afrotropical canopy-dwelling Orchestina (Araneae, Oonopidae), with a wealth of remarkable sexual dimorphic characters

    Authors
    Henrard, A.
    Jocqué, R.
    Discipline
    Biological sciences
    Subject
    Biological collection and data management
    Invertebrates
    Audience
    Scientific
    Date
    2012
    Metadata
    Show full item record
    Description
    Eighteen new species of the genus Orchestina are described on the basis of specimens obtained from fogging samples in the Afrotropical region. They are O. acaciae, O. ampulla, O. clavigera, O. communis, O. cornuta, O. crypta, O. debakkeri, O. fannesi, O. fractipes, O. gibbotibialis, O. gigabulbus, O. intricata, O. kasuku, O. lanceolata, O. macrofoliata, O. microfoliata, O. probosciformis and O. saaristoi. Excepted for O. intricata, they are all known from males and females, although those of O. debakkeri and O. probosciformis cannot be separated. One species (O. crypta) was recognized after DNA-analysis and was found to show morphological differences with O. communis. The study revealed a series of remarkable sexually dimorphic characters most of which had not been documented so far: modified leaf shaped setae on the labium in some species arranged asymmetrically, endites with hook shaped excrescences and rows of spectacular flattened setae, remarkable cheliceral setae and outgrowths, a modified clypeus, modified front legs, a preocular carapace swelling and the infra-ocular gutter. Spectacular modifications of the endites were already known from other Oonopidae. The function of the modifications is discussed.
    Citation
    Henrard, A.; Jocqué, R. (2012). An overview of Afrotropical canopy-dwelling Orchestina (Araneae, Oonopidae), with a wealth of remarkable sexual dimorphic characters. , Zootaxa, Vol. 3284, 1-104, ISSN: 1175-5326,
    Identifiers
    issn: 1175-5326
    uri: https://orfeo.belnet.be/handle/internal/1672
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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