Egg parasitoids of (Nawa, 1913) (Hemiptera, Cicadellidae), a leafhopper pest of grapevines in Japan, with description of a new species of Haliday, 1833 (Hymenoptera, Mymaridae).

Several species of egg parasitoids (Hymenoptera: Mymaridae and Trichogrammatidae) of the leafhopper pest of grapevines in Japan, Arboridia (Arboridia) apicalis (Nawa) (Hemiptera, Cicadellidae), were reared and identified for the first time. Using a combination of genetic and morphological evidence, Anagrus (Anagrus) arboridiae Triapitsyn & Adachi-Hagimori, (Mymaridae) is described and illustrated from Honshu Island (Shimane Prefecture) and Kyushu Island (Miyazaki Prefecture). It is shown to be different from Anagrus (Anagrus) japonicus Sahad and Chiappini & Lin, to which it is most similar; the latter species was originally described from China and is newly recorded here from Okinawa Island, Japan. Mitochondrial and nuclear ribosomal DNA sequence data provide clear evidence for the separation of from , , and some other members of the Anagrus (Anagrus) atomus (L.) species group. Two other species of Haliday, A. (Anagrus) avalae Soyka and , are also identified in Japan from eggs of the leafhoppers (Matsumura) and Eurhadina ? betularia Anufriev, respectively. An updated key to females of the Japanese species of is given. Kryger (a new record for Japan), sp., and an Aphelinoidea (Aphelinoidea) sp. (Trichogrammatidae) were the other, although much less abundant, apparent egg parasitoids of in Shimane Prefecture, mainly in non-organic vineyards.