Invasion

Invasion Description

1st Record: Shizuoka Prefecture, Honshu/Japan/Pacific Ocean A. v. shimizuensis, Stephensen 1944, cited by Barnard 1965; Kim and Kim 1988)

Some Japanese specimens are considered to belong to the subspecies Korean specimens are considered to belong to the subspecies A. valida shimizuensis(Kim and Kim 1988). Others fit the original description of A. valida (Nagata 1960). Their invasion status is uncertain.

Geographic Extent

Shizuoka Prefecture, Honshu/Japan/Pacific Ocean A. v. shimizuensis, Stephensen 1944, cited by Barnard 1965; Kim and Kim 1988); Mihara, HonshuJapan/Seto Inland Sea (1955-1957, Nagata 1960, A. v. valida)