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Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Opiliones
Suborder: Cyphophthalmi
Superfamily: Sironoidea
Family: Troglosironidae
Shear, 1993
Genus: Troglosiro
Juberthie, 1979

see text

1 genus, 13 species

The Troglosironidae are a family of harvestmen with thirteen described species in a single genus, Troglosiro. Several species, including six undescribed ones, were collected around the island of New Caledonia, and more are expected to be found.[1]

Molecular data suggests that the Troglosironidae are related to Neogoveidae or Sironidae, but not to Pettalidae, as was proposed earlier.[1]

Troglosiro is endemic to New Caledonia. They are eyeless, small harvestman, 2.5 mm long at the most.[2] Despite their name, they do not live exclusively in caves; several species have been found in forest litter.[3]


The name of the genus giving the family its name is a combination of Ancient Greek troglos "cave", and the harvestman genus Siro.


Six species are already named, but not yet published:[4]


  1. ^ a b Sharma & Giribet, 2005
  2. ^ Giribet, Gonzalo (2007): Troglosironidae Shear, 1993. In: Pinto-da-Rocha et al. 2007: 107f
  3. ^ Shear 1993
  4. ^ Cyphophthalmi checklist


  • Joel Hallan's Biology Catalog: Troglosironidae
  • Checklist of the Cyphophthalmi species of the World
  • Shear, W.A. (1993): The genus Troglosiro and the new family Troglosironidae (Opiliones, Cyphophthalmi). Journal of Arachnology 21: 81-90. PDF
  • Sharma, P. & Giribet, G. (2005): A new troglosiro species (Opiliones, Cyphophthalmi, Pettalidae) from New Caledonia. Zootaxa 1053: 47-60. PDF
  • Pinto-da-Rocha, R., Machado, G. & Giribet, G. (eds.) (2007): Harvestmen - The Biology of Opiliones. Harvard University Press ISBN 0-674-02343-9