Indoxiphia prima (Hymenoptera, Xiphydriidae): Discovery of a Taiwanese Woodwasp in Southern Japan

Abstract

A xiphydriid woodwasp, Indoxiphia prima Smith, 2019, previously known only from Taiwan, is newly recorded from Ashizuri-misaki (Shikoku), Nakanoshima Island (Tokara Islands) and Amami-oshima Island, southern Japan. Its taxonomic characters are summarized, and the species is compared with some other Japanese xiphydriids. This is one of a few xiphydriid species showing a peculiar distribution pattern confined to southeastern coastal areas in Japan. This distribution pattern may have been formed at least partly as a result of dispersal by marine drift.