Geosesarma

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Genus of crabs

title: "Geosesarma" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["sesarmidae", "terrestrial-crustaceans", "taxa-named-by-johannes-govertus-de-man"] description: "Genus of crabs" topic_path: "technology/web" source: "https://en.wikipedia.org/wiki/Geosesarma" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Genus of crabs ::

| image = Lahad-Datu Sabah Mount-Silam-Red-Crab-Geosesarma-aurantium-02.jpg | image_caption = Geosesarma aurantium | taxon = Geosesarma | authority = De Man, 1892 | type_species = Sesarma noduliferum | type_species_authority = de Man, 1892

Geosesarma is genus of small freshwater or terrestrial crabs, typically less than 10 mm across the carapace. They live and reproduce on land with the larval stages inside the egg. They are found in India, Indonesia, Malaysia, Thailand, the Philippines, the Solomon Islands and Hawaii.

In the pet trade, they are called vampire crabs. This has nothing to do with their feeding habits, but rather with the bright, contrastingly yellow eyes of some Geosesarma species.. However not all vampire crab species have bright yellow eyes, there are quite a few species that have white or black eyes.

Species

Geosesarma contains these species:

As of March 2015, professor Peter Ng of National University of Singapore has named 20 Geosesarma species, and he "has another half a dozen or so newly collected Geosesarma species from Southeast Asia in his lab, and these species still need to be named and described."

Threats

Geosesarma dennerle and Geosesarma hagen, both originally from Java, are threatened by illegal overcollection for the aquarium trade.

References

References

  1. Peter Davie. (2012). "''Geosesarma'' de Man, 1892".
  2. Hartnoll, Richard G.. (1998). ["Biology of the Land Crabs"]({{google books). [[Cambridge University Press]].
  3. "Freshwater crabs". [[Zoological Survey of India]].
  4. (2024-10-16). "Geosesarma - Vampire Crabs".
  5. (2024-10-05). "Geosesarma Species List With Pictures and Location Data".
  6. Peter K. L. Ng, Daisy Wowor. (2024). "Two new species of vampire crabs (Crustacea: Decapoda: Brachyura: Sesarmidae: Geosesarma De Man, 1892) from Java, Indonesia". Raffles Bulletin of Zoology.
  7. {{cite GBIF
  8. (2019). "''Geosesarma mirum'', a new species of semi-terrestrial sesarmid crab (Crustacea, Decapoda, Brachyura) from central Taiwan". ZooKeys.
  9. Blaszczak-Boxe, Agata. (March 19, 2015). "Mystery of the 'Vampire Crabs' Solved".
  10. Blaszczak-Boxe, Agata. (19 March 2015). "Mystery of the 'Vampire Crabs' Solved". [[LiveScience]].
  11. Mahbu, Amri. (March 23, 2015). "New Species of Javan Vampire Crabs Face Potential Exploitation".

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