#73 SPECIES: Idusa sp. (possibly a new genus) WILLIAMS FIELD NUMBER: Wms Jap Isop-142 FISH MUSEUM NUMBER: Maizuru Fisheries Lab #M-7617 LOCATION IN/ON HOST: Posterior upper gill chamber SPECIMENS: one male HOST: Longsnout Bullhead Sculpin, Ereunias grallator HOST STANDARD AND TOTAL LENGTHS (cm): 25.0 cm SL, 31.0 cm TL COLLECTION LOCALITY: not given (Japan) COLLECTION DATE: not given COLLECTORS: Ernest H. Williams and Lucy Bunkley-Williams DEPOSITION: glass vial with 70% ETOH STATUS: donation by EHW & LBW