Image Key > Malacostraca > Peracarida

Select from one of the following Orders:

Amphipoda Amphipods	Isopoda Isopods	Mysidacea Mysids

• Possess single pair of maxillipeds (rarely 2-3).
• Mandibles with an articulated accessory process between molar and incisor teeth.
• Carapace often reduced in size and not fused with posterior thoracic somites.
• Carapace used to brood eggs.
• Basal-most segments of legs bear thin flattened plates that enclose a ventral brood pouch known as a marsupium.

• Worldwide.

• Young hatch at a post-larval stage that resembles the adults but lacks the last pair of legs.