Other Arthropoda

Water Mites• Small, often brightly colored,

especially red• Cephalothorax is small,

making the abdomen the only visible segment

• Common in shallow littoral zone among aquatic plants

• Adults are mostly piercer-predators on small dipterans and microcrustaceans

• Larvae are external parasites especially on larval midges and mosquitoes

• Have a very complex life cycle

Order Isopoda: Sow Bugs

• Secretive; found in shallow water

• Omnivorous• Eggs held in marsupium

Order Amphipoda: Scuds,Sideswimers

• Laterally compressed• Most abundant in the

absence of fish• Negatively phototactic• Omniovores• Eggs and young are

brooded in marsupium• Some are subterranean

Order Decapoda:Crayfish and Shrimps

Fairy Shrimp

Order Ostracoda: Clam Shrimp