
Gelasimus tetragonon
Tetragonal Fiddler Crab
As recorded: Uca tetragonon (Herbst, 1790)
Animalia › Arthropoda › Malacostraca › Decapoda › Ocypodidae
- Collected by
- L.A. Thurston and D. ThaanumDitlev Due Thaanum →L.A. Thurston L.A. ThurstonL.A. Thurston →
- Locality
- Palmyra Atoll
- Island
- Palmyra Atoll
- Region
- Unknown Region
- Record type
- Preserved specimen
Gelasimus tetragonon observed alive
Since 2000, iNaturalist observers have recorded 429 research-grade sightings in the wild, most recently on 2026-09-30.

2026-09-30
Hithadhoo, Seenu, MV
(c) perribrook, some rights reserved (CC BY-NC)

2026-09-29
P6QV+84P Hidden Beach, Sharm El Sheikh 2, South Sinai Governorate 8750001, Ägypten
(c) Simon, some rights reserved (CC BY-NC)

2026-09-26
Indian Ocean, Kwale, KE
(c) fhabekuss, some rights reserved (CC BY-NC)

2026-09-26
Fiji
(c) manulele324, some rights reserved (CC BY-NC)

2026-09-26
Rewa, FJ-CE, FJ
(c) Fred Manila, some rights reserved (CC BY-NC)

2026-09-24
Sharm el-Sheikh, South Sinai, EG
(c) Leonie, some rights reserved (CC BY-NC)
Observations and photos from iNaturalist, shown only when openly licensed.
Cite this specimen
Gelasimus tetragonon. BPBM 826. Bernice Pauahi Bishop Museum, Honolulu. GBIF occurrence 39558813. Accessed via explore.bishopmuseum.org/specimens/s/826.
Record sources
- GBIF occurrence 39558813 ↗
- Data license: CC0
- Last harvested October 26, 2026
