Cameraria niphonica Kumata, 1963

(Figs 8E, 14 F–G)

Material examined. Russia: PK, Gornotaezhnoe, forest around MTS, 43.68N, 132.15E, 224 m alt., A. caudatum subsp. ukurundense, 22.VII.2016, 1 larva, NK537 , MK 403685,; same location, A. pseudosieboldianum, 25.VII.2016, 1 larva, NK529 , MK 403719, deposited in INRA; same location, host and date, 1 male (reared from leaf mine), 109.3 / [1Cn-2016-male] (Fig. 8E), deposited in SIF.

Leaf mine. The mine is a relatively large elongated flat blotch, with a very short preceding epidermal tunnel that usually starts nearby secondary vein on the upper side of the leaf (Fig. 14F). The mine is white (Fig. 14F); an exceptionally dark mine was found on A. caudatum subsp. ukurundense (Fig. 14G). The frass is not granular, like in Phyllonorycter species, but has a tar-like aspect and covers the bottom of the mine. Pupation in mine.

Trophic specialization. Monophagous on Acer: A. barbinerve, A. japonicum, A. palmatum, A. pseudosieboldianum (Sapindaceae) (De Prins & De Prins 2018), A. caudatum subsp. ukurundense (new record).

Distribution. Russia: RFE—PK (Baryshnikova 2008); Japan (Kumata 1963).