| Heterozius | |
|---|---|
| |
| Preserved specimen of Heterozius rotundifrons | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Brachyura |
| Family: | Belliidae |
| Subfamily: | Heteroziinae Števčić, 2005 |
| Genus: | Heterozius A. Milne-Edwards, 1867 |
| Species: | H. rotundifrons
|
| Binomial name | |
| Heterozius rotundifrons A. Milne-Edwards, 1867
| |
Heterozius rotundifrons, or big hand crab, is a species of crab of the family Belliidae, endemic to New Zealand. The carapace width is up to 25 millimetres (1 in).
Behavior
When threatened, Heterozius rotundifrons has a unique antipredator behavior where it fully extends all its limbs including its chelipeds and becomes immobile. The crab keeps defensive stance for up to a few minutes.
References
References
- Miller, M; Batt, G (1973). Reef and Beach Life of New Zealand. Auckland, New Zealand: William Collins (New Zealand) Ltd.
- Bach, Catherine; Hazlett, Brian (2010). "Individuality in the predator defense behaviour of the crab Heterozius rotundifrons". Behaviour. 147 (5–6): 587–597. doi:10.1163/000579510x12629536366329. ISSN 0005-7959.
- Hazlett, Brian A.; Colin, Mclay (2005). "Responses to predation risk: alternative strategies in the crab Heterozius rotundifrons". Animal Behaviour. 69 (4): 967–972. doi:10.1016/j.anbehav.2004.06.028. ISSN 0003-3472.