Nematocarcinidae

Nematocarcinidae is a family of crustaceans belonging to the order Decapoda. Sometimes called spider shrimp, they inhabit deeper waters beyond the continental shelf, to depths of around.
These shrimp are soft-shelled, and small to medium-sized. The pleura of their second abdominal segment overlaps with the adjacent segments. Their first two pairs of pereiopods are similar, with an unsegmented carpus and ending in chelae, unlike the third pair which lack chelae. The last three pairs of pereiopods are very elongate, hence the name. Exopods are present on the first to fourth pairs of pereiopods. Shrimp of this family range in color from pale orange to deep red.
5 genera are known:Lenzicarcinus Burukovsky, 2005Macphersonus Burukovsky, 2012Nematocarcinus Milne-Edwards, 1881Nigmatullinus Burukovsky, 1991Segonzackomaius Burukovsky, 2011
The family Lipkiidae was moved out of this family; it was formerly a subfamily of Nematocarcinidae before being split out.