Aphelinoidea (Aphelinoidea) sp.

Triapitsyn, Serguei V., Adachi-Hagimori, Tetsuya, Rugman-Jones, Paul F., Kado, Natsuko, Sawamura, Nobuo & Narai, Yutaka, 2020, Egg parasitoids of Arboridia apicalis (Nawa, 1913) (Hemiptera, Cicadellidae), a leafhopper pest of grapevines in Japan, with description of a new species of Anagrus Haliday, 1833 (Hymenoptera, Mymaridae), ZooKeys 945, pp. 129-152 : 129

Aphelinoidea (Aphelinoidea) sp. Figure 6b

Material examined.

Japan, Honshu Island, Shimane Prefecture, Unnan, Oku-Izumo vineyard, 35°17'20"N, 132°55'46"E, 155 m, leaves of organic Black Olympia table grapes heavily infested with A. apicalis in a covered vineyard collected 4.x.2019, N. Kado, N. Sawamura, T. Adachi-Hagimori, S. V. Triapitsyn, emerged 5.x.2019, S. V. Triapitsyn [1 ♂, UCRC].

Distribution.

Nearctic region: USA (Nebraska); Palaearctic region: Japan (Honshu Island).

Host.

Cicadellidae : Arboridia (Arboridia) apicalis (Nawa). This tentative host association will need to be confirmed by experimental work using sentinel eggs of this leafhopper.

Remarks.

This specimen is similar to Aphelinoidea (Aphelinoidea) waterhousei (Blood & Kryger) which belongs to the semifuscipennis species group of the nominate subgenus of the genus Aphelinoidea Girault, formerly placed in the synonymized subgenus Aphelinoidea ( Diaclava Blood & Kryger) ( Triapitsyn 2018). Like A. waterhousei from England, UK, known from the single male specimen, the one from Japan (Fig. 6b ) has apical segment of the clava contrastingly darker than the light-colored basal segment, and the marginal vein of its fore wing is notably thickened while the stigmal vein is short, inconspicuous. But because the fore wing of the specimen from Japan is notably wider and its marginal setae are relatively shorter (ca. one-third of the greatest fore wing width), it is unlikely to be A. waterhousei ; rather, it is more similar to the unidentified male specimen from Nebraska, USA which has the same features, as illustrated by Triapitsyn (2018: 78, figs 93-97).

Figures

Figure 6. Habitus in lateral view a Oligosita sp. female (Taisha, Izumo, Shimane Prefecture, Honshu Island, Japan) b Aphelinoidea (Aphelinoidea) sp. male (Unnan, Shimane Prefecture, Honshu Island, Japan).