Species descriptions

Geosesarma spectrum

Small, typically terrestrial crabs. Excellent climbers. Can be kept in paludariums. Do not damage plants. Live in groups, are social animals.

Published: 11 Mar 2025

Geosesarma spectrum

Latin Name:

Geosesarma spectrum

Trade Names:

Discoverers:

P.Y.C. Ng & P.K.L. Ng, 2019

Scientifically Described:

Yes

Availability in Trade:

Not available

Distribution:

Ulu Temburong National Park, Brunei Darussalam

Distribution Map:

Geosesarma spectrum Distribution
Source: Own work based on Google Maps

Habitat:

Tropical forest floor, near streams and water sources. They enjoy digging burrows. Young individuals sometimes hide in pitcher plants.

Geosesarma spectrum
Geosesarma spectrum
Source: Google Maps

Additional Information:

Prefers a terrestrial lifestyle.

Appearance:

  • Carapace: divided into two colors, maroon and gray-pink
  • Legs: divided into two colors, gray-pink and brown
  • Claws: divided into two colors, orange tips with purple rest
  • Eyes: white
  • Underside: gray-pink

Geosesarma spectrum
Geosesarma spectrum
Source: Ng, P. Y. C., & Ng, P. K. L. (2019). Geosesarma spectrum, a new species of semiterrestrial vampire crab (Crustacea: Decapoda: Brachyura: Sesarmidae) from Brunei Darussalam, Borneo. Zootaxa, 4614(3): 529–540.

Geosesarma spectrum
Geosesarma spectrum
Geosesarma spectrum
Source: inaturalist.org

Reproduction:

The female carries the eggs, from which fully developed crabs hatch. The female carries the crabs on her body during the first days. This is a unique behavior within the genus Geosesarma.

Geosesarma spectrum
Source: Ng, P. Y. C., & Ng, P. K. L. (2019). Geosesarma spectrum, a new species of semiterrestrial vampire crab (Crustacea: Decapoda: Brachyura: Sesarmidae) from Brunei Darussalam, Borneo. Zootaxa, 4614(3): 529–540.