Argopistes tsekooni Chen 1934

Argopistes tsekooni Chen, 1934 Fig. 9 I – N Host plant. Oleaceae: Ligustrum obtusifolium Sieb. et Zucc., Fraxinus sieboldiana Blume, Syringa reticulata (Blume). Leaf mine. Full-depth wide linear mine on mature leaf in young instars and full-depth ophiogenous blotch mine in old instars (Fig. 9 J – N). The mine is wider than the larval width, and frass is thick thread-like, deposited linearly along the middle line of the mine. The fully grown larva exits the mined leaf, falls to the ground, and pupates underground. Material examined. • 3 adults, Mt. Nabejiri, Taga, Shiga Pref., 23-V-2015 (as larva on Ligustrum obtusifolium), emerged on? - VII- 2015 (Fig. 9 I – K); • 7 adults, Iwakura, Sakyo, Kyoto Pref., 22-IV-2013 (as larva on Fraxinus sieboldiana), emerged on 3-VI-2013 (Fig. 9 L); • 7 adults, Tôro Lake, Shibecha, Kawakami-gun, Kushiro, Hokkaido, 25-VI-2017 (as larva on Syringa reticulata), emerged on 8-VIII-2017 (Fig. 9 M, N).