Dorsum of Metarhaucus lojanus, from Roewer (1912).

Belongs within: Cosmetidae.

Metarhaucus is a poorly defined genus of harvestmen found in Central and South America.

Characters (from Roewer 1923): Sturdy animals with strong (especially third and fourth) legs. Areas 1, 2 and 4 each with one median tubercle pair; area 3 with one median spine pair; area 5 and free tergites 1–3 unarmed. Second cheliceral segment much thicker in male than in female and distinctly rising above the first segment. Legs in both sexes with basal segment of legs III and especially IV much thicker and stronger than that of legs I and II; telotarsus II three-segmented; telotarsus I six-segmented; tarsi II–IV each more than six segments, variable.

<==Metarhaucus Pickard-Cambridge 1905 [incl. Erginus Simon 1879 non Jeffreys 1877] K03
    |--*M. fuscus Pickard-Cambridge 1905 [=Erginus fuscus] K03
    |--M. conspicuus Roewer 1927 K03
    |--M. devillei (Simon 1879) [=*Erginus devillei, Rhaucus devillei] K03
    |--M. lojanus (Roewer 1912) [=Erginus lojanus] K03
    |--M. ohausi (Roewer 1912) [=Erginus ohausi] K03
    |--M. reimoseri Roewer 1933 K03
    |--M. reticulatus Roewer 1912 [=Erginus reticulatus] K03
    |--M. serrifemur Roewer 1927 K03
    |--M. trilineatus (Sørensen 1932) [=Rhaucus trilineatus] K03
    |--M. unicolor Roewer 1957 K03
    `--M. variatus (Roewer 1912) [=Erginus variatus] K03

*Type species of generic name indicated


[K03] Kury, A. B. 2003. Annotated catalogue of the Laniatores of the New World (Arachnida, Opiliones). Revista Ibérica de Aracnología, volumen especial monográfico 1: 1–337.

Roewer, C.-F. 1923. Die Weberknechte der Erde: Systematische Bearbeitung der bisher bekannnten Opiliones. Gustav Fischer: Jena.

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