Sea-spiders
Guides
Callipallenidae
sea spiders
Callipallenidae is a family of sea spiders (Pycnogonida) established by Hilton in 1942. The family includes multiple genera distributed across Antarctic, subantarctic, and temperate waters, with notable species richness in southern Australian and Tasmanian waters. Some genera, such as Pallenella, exhibit exceptional sympatric diversity with multiple species co-occurring in the same microhabitat. Members of this family are generally small to medium-sized pycnogonids found in marine benthic environments.
Pycnogonidae
Small Sea Spiders
Pycnogonidae is a family of sea spiders containing two genera: Pycnogonum and Pentapycnon. Members are distinguished by their short, stout legs and reduced cephalic appendages. Most species have four pairs of legs as adults, though Pentapycnon species possess five pairs. The family has a worldwide marine distribution.