Neolithodes grimaldii
| Porcupine crab | |
|---|---|
| Illustration from Ray Lankester's A Treatise on Zoology above, museum specimen below (living are red) | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | Malacostraca | 
| Order: | Decapoda | 
| Suborder: | Pleocyemata | 
| Infraorder: | Anomura | 
| Family: | Lithodidae | 
| Genus: | Neolithodes | 
| Species: | N. grimaldii | 
| Binomial name | |
| Neolithodes grimaldii (A. Milne-Edwards & Bouvier, 1894) | |
| Synonyms | |
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Neolithodes grimaldii, the porcupine crab, is a species of king crab. It is found in cold, deep waters in the North Atlantic, often caught as bycatch in fisheries for Greenland halibut (Reinhardtius hippoglossoides). As suggested by its common name, the carapace and legs are covered in long spines.