Argopistes biplagiata Motschulsky, 1860

Kato, Makoto & Imada, Yume, 2025, Diversity and host plant utilization of leaf-mining beetles of Chrysomeloidea (Coleoptera) in Japan, ZooKeys 1238, pp. 209-268 : 209-268

Argopistes biplagiata Motschulsky, 1860

Fig. 9 C – H

Host plant.

Oleaceae : Ligustrum japonicum , Osmanthus heterophyllus , O. insularis , O. × fortunei .

Leaf mine.

Full-depth linear mine on young leaf (Fig. 9 D, G, H ). The egg is laid on the leaf margin, and the hatched larva mines adjoining along the leaf margin or its mine. Frass is thread-like, deposited along the middle line of the mine in young instars, but in old instars along meandering larval trajectory, scattered throughout the mine. The fully grown larva exits the mined leaf, falls to the ground, and pupates underground.

Material examined.

• 15 adults and many leaf mines, Mizorogaike Lake , Sakyo, Kyoto Pref., 13-V-1998 on Osmanthus × fortunei (Fig. 9 C, D ) ; • 7 adults, Iwakura , Sakyo, Kyoto Pref., 13-V-2016 (as larva on Osmanthus heterophyllus ), emerged on 4–8-VI-2016 (Fig. 9 E – H ) .

Figures

Figure 9. Habitus of adults and leaf mines of four Argopistes species A, B A. coccinelliformis C – H A. biplagiata I – N A. tsekooni O – Q A. ryukyuensis. Host plants A, B Ligustrum ovalifolium at Shirahama, Wakayama Pref. C, D Osmanthus × fortunei at Mizorogaike Lake, Kyôto Pref. E – H Osmanthus heterophyllus at Iwakura, Kyôto Pref. I – K Ligustrum obtusifolium at Mt Nabejiri, Shiga Pref. L Fraxinus sieboldiana at Uri-tôge, Hamamatsu, Shizuoka Pref. M, N Syringa reticulata at Tôro Lake, Kushiro, Hokkaido O – Q Ligustrum japonicum at Abu, Okinawa Is., Okinawa Pref.