The Subgenus Weisia Schmiedeknecht, 1907, of the Genus Phytodietus Gravenhorst, 1829 (Hymenoptera: Ichneumonidae: Tryphoninae), New to Japan and Eastern Palearctic Region

摘要

The subgenus Weisia Schmiedeknecht, 1907, of the genus Phytodietus Gravenhorst, 1829, is newly recorded from Japan and the Eastern Palearctic region based on specimens of P. (IV.) pitambari Kour & Jonathan, 1979 collected from North Ryukyu.The genus Phytodietus Gravenhorst, 1829 belongs to the subfamily Tryphoninae and comprises four subgenera: Euctenopus Ashmead,1900; Neuchorus Uchida,1931; Phytodietus Gravenhorst, 1829; and Weisia Schmiedeknecht, 1907 (Townes, 1969; Kostro-Ambroziak, 2007). The subgenus Weisia contains15 species from the Palaearctic, Oriental, Neotropical, Australasian, and Afrotropical regions (Kostro-Ambroziak, 201lab; Yu et al" 2012), and can easily be separated from the other subgenera by the absence of areolet (Townes, 1969; Kasparyan, 2007; Kostro-Ambroziak, 2010). This subgenus has been previously studied in the Palearctic region (e.g. Gregor, 1935; Kolarov, 2003; Kostro-Ambroziak, 2007), although all records were from the Western part.