Discovery of Ostrinia sanguinealis (Lepidoptera, Crambidae), feeding on Saururus chinensis (Saururaceae), in Kyoto, Japan, and its phylogenetic position within the genus Ostrinia

Abstract

A pyraustine Ostrinia sanguinealis (Warren), which has been known only in Kyushu, is discovered in Kyoto City, Honshu, Japan, for the first time. The female genitalia are drawn based on specimens collected in Kyoto, with the male genitalia obtained in the same place. The larva of this species feeds on Saururus chinensis (Saururaceae), boring inside the plant stalk. This is the first host record of this species and the association with Saururaceae is also first for the genus Ostrinia. The larval morphology and biology of O. sanguinealis are given. DNA sequences of the mitochondrial COI barcode region and nuclear histone 3 of O. sanguinealis are examined for comparison with those of the other Ostrinia species, and the inferred tree placed O. sanguinealis as the sister of the “O. nubilatis species group”. The sudden appearance of this species in the center of Kyoto city is discussed.