Eristalis (Eoseristalis) kyokoae (Kimura, 1986)

Mutin, V. A., 2020, NEW DATA ON HOVERFLIES (DIPTERA: SYRPHIDAE) FROM RUSSIAN FAR EAST, Far Eastern Entomologist 403, pp. 20-24 : 21

Eristalis (Eoseristalis) kyokoae (Kimura, 1986)

Fig. 2

MATERIAL. Russia: Sakhalinskaya oblast, Kunashir Island, Lagunnoe Lake, 26.VII

1955, 1♀, leg. N. Violovitsh [ ZISP] .

DISTRIBUTION. Russia (new record): Kuril Islands. – Japan (Hokkaido, Honshu,

Shikoku, Kyushu, Tsushima Is.); Korea (Han et al., 20o4; Ohara et al., 2014).

NOTES. Examined specimen has three labels. Two of them were written by Violovich's hand. The white label gives the information about geographic place, date and collector’s name. The red one contains a printed word “ Holotypus ” and handwritten words “ Eristalis optatus N. Violovitsh”. However there is no any paper published by N.A. Violovitsh where he used this name. On the third specimen label there is the following inscription: “ Eristalis cerealis F.A. Barkalov det., 2017”. In fact, Eristalis kyokoae is like E. cerialis (Fabricius,

1805). Males of these species are distinguished by the external characters as well as genitalia characters according to the diagnosis of Kimura (1986). The female of E. kyokoae that was studied has yellow basal 1/2 of metafemur, whereas those of E. cerealis have entirely black metafemur, this character not being mentioned in the original description.

Figures

Figs 1–3. Imago of hoverflies. 1 – Eristalinus aurulans, ♀ (Primorskii krai: Rudnaya Pristan); 2 – Eristalis kyokoae, ♀ (Kunashir Island: Lagunnoe Lake); 3 – Metadon bifasciatus,