remiped

from The Century Dictionary.

• Having oar-shaped feet, or feet that are used as oars; oar-footed.
• noun A remiped animal, as a crustacean or an insect.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Zoöl.) Having feet or legs that are used as oars; -- said of certain crustaceans and insects.
• noun An animal having limbs like oars, especially one of certain crustaceans.
• noun One of a group of aquatic beetles having tarsi adapted for swimming. See water beetle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective zoology Having oar-like feet.
• noun zoology Any small insect (usually crustacean or aquatic) with oar-shaped feet.