Geaya

Dorsal view of Geaya marginata, from here.

Belongs within: Sclerosomatidae.

Geaya is a genus of sclerosomatid harvestmen from Central and South America, characterised by the presence of three pseudoarticular nodules on femur II.

Characters (from Roewer 1923): Eyemound as long as broad and high, dorsally smooth or granulate, without larger spines. Scutum unarmed. Lateral margins of coxae with sharp, trifid denticulations. Legs usually very long and thin; femur II 2–5 times, femora I and III twice as long as body (rarely only slightly shorter); femoral nodular formula 0.3.0.0.

<==Geaya Roewer 1910 [=Embrikia Roewer 1910]C92
    |--*G. nigromaculata Roewer 1910 [=*Embrikia nigromaculata]C92
    |--G. aenescens Roewer 1910KP-R02 [=Embrikia aenescensR23]
    |--G. annulipes (Banks 1909) [=Leiobunum annulipes, Prionostemma annulipes]GG47
    |--G. atrolutea Roewer 1910KP-R02 [=Embrikia atroluteaR23]
    |--G. aureolucens Roewer 1910KP-R02
    |--G. auruginia Goodnight & Goodnight 1942GG42a
    |--G. bicornuta Mello-Leitão 1939KP-R02
    |--G. bimaculataGG42c
    |--G. brevipes (Roewer 1915) [=Embrikia brevipes]R23
    |--G. centralis Roewer 1953KP-R02
    |--G. crucicolorata Roewer 1953KP-R02
    |--G. davisi Goodnight & Goodnight 1942GG42c
    |--G. elegansM-L32
    |--G. ephippiata (Roewer 1915) [=Embrikia ephippiata]R23
    |--G. esperanza Goodnight & Goodnight 1942GG53
    |--G. fulvum (Cambridge 1904) [=Leiobunum fulvum, Prionostemma fulvum]GG53
    |--G. goodnighti Roewer 1953KP-R02
    |--G. haitiensis Goodnight & Goodnight 1943GG43b
    |--G. inermis Mello-Leitão 1939KP-R02
    |--G. lineata Goodnight & Goodnight 1953GG53
    |--G. maculatipes (Roewer 1916) [=Embrikia maculatipes]R23
    |--G. marginata Roewer 1953KP-R02
    |--G. monticola (Chamberlin 1916) [=Leiobunum monticola]GG43a
    |--G. nigricoxa Roewer 1910KP-R02 [=Embrikia nigricoxaR23]
    |--G. plana Goodnight & Goodnight 1942GG42c
    |--G. reimoseri Roewer 1933S70
    |--G. tibialis Roewer 1953KP-R02
    |--G. unicolor Roewer 1910GG42b [=Embrikia unicolorR23]
    |--G. variegata Mello-Leitão 1939KP-R02
    |--G. vivida Goodnight & Goodnight 1942GG42b
    `--G. wenzeliHT12

*Type species of generic name indicated

References

[C92] Crawford, R. L. 1992. Catalogue of the genera and type species of the harvestman superfamily Phalangioidea (Arachnida). Burke Museum Contributions in Anthropology and Natural History 8: 1–60.

[GG42a] Goodnight, C. J., & M. L. Goodnight. 1942a. New and little known Phalangida from Mexico. American Museum Novitates 1163: 1–16.

[GG42b] Goodnight, C. J., & M. L. Goodnight. 1942b. Phalangids from British Guiana. American Museum Novitates 1167: 1–13.

[GG42c] Goodnight, C. J., & M. L. Goodnight. 1942c. Phalangida from Mexico. American Museum Novitates 1211: 1–18.

[GG43a] Goodnight, C. J., & M. L. Goodnight. 1943a. Phalangida from South America. American Museum Novitates 1234: 1–19.

[GG43b] Goodnight, C. J., & M. L. Goodnight. 1943b. Three new phalangids from tropical America. American Museum Novitates 1228: 1–4.

[GG47] Goodnight, C. J., & M. L. Goodnight. 1947. Studies of the phalangid fauna of Central America. American Museum Novitates 1340: 1–21.

[GG53] Goodnight, C. J., & M. L. Goodnight. 1953. The opilionid fauna of Chiapas, Mexico, and adjacent areas (Arachnoidea, Opiliones). American Museum Novitates 1610: 1–81.

[HT12] Hedin, M., N. Tsurusaki, R. Macías-Ordóñez & J. W. Shultz. 2012. Molecular systematics of sclerosomatid harvestmen (Opiliones, Phalangioidea, Sclerosomatidae): geography is better than taxonomy in predicting phylogeny. Molecular Phylogenetics and Evolution 62 (1): 224–236.

[KP-R02] Kury, A. B., & R. Pinto-da-Rocha. 2002. Opiliones. In: Adis, J. (ed.) Amazonian Arachnida and Myriapoda pp. 345–362. Pensoft: Sofia.

[M-L32] Mello-Leitão, C. F. de. 1932. Opiliões do Brasil. Revista do Museu Paulista 17 (2): 1–505, 61 pls.

[R23] Roewer, C.-F. 1923. Die Weberknechte der Erde: Systematische Bearbeitung der bisher bekannnten Opiliones. Gustav Fischer: Jena.

[S70] Šilhavý, V. 1970. Nouvelles recherches sur la famille des Neopilionidae Lawrence. Bulletin du Muséum National d’Histoire Naturelle series 2, 41 (Suppl. 1): 171–175.

Leave a comment

Your email address will not be published. Required fields are marked *