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iNat·418176SpeciesAnimalia1,705 field observations
  1. Animals
  2. ›Arthropods
  3. ›Crustaceans
  4. ›Typical Crustaceans
  5. ›Malacostracans
  6. ›Decapods, Isopods, and allies
  7. ›Decapods and Krill
  8. ›Decapods
  9. ›Crabs, Lobsters, Shrimps, and Allies
  10. ›True Crabs
  11. ›Eubrachyuran Crabs
  12. ›Thoracotrematan Crabs
  13. ›Ghost, Fiddler, Sand Bubbler Crabs and Allies
  14. ›Semaphore Crabs
  15. ›Heloecius
Semaphore Crab
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Semaphore Crab

Heloecius cordiformis

Heloecius cordiformis is a species of semiterrestrial crab found in mangrove swamps and mudflats along the east coast of Australia. Adults are around 25 mm (1 in) wide, with males being larger and having larger and more conspicuously coloured claws. The males wave their claws to communicate with other crabs, giving them their common name of semaphore crab. They can breathe both in air and under water, and feed at low tide on detritus in the sediment. H....

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Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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Every page naming Heloecius cordiformis in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 418176.