Argopus balyi Harold, 1878

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

Argopus balyi Harold, 1878

Fig. 10 A – D

Host plant.

Ranunculaceae : Clematis stans Sieb. et Zucc. C. apiifolia DC. and Clematis terniflora DC. are recorded as adult hosts ( Hayashi et al. 1984; Kimoto and Takizawa 1993).

Leaf mine.

Upper-layer radiate mine along primary leaf vein in young instars (Fig. 10 C ) and full-depth blotch mine in old instars (Fig. 10 D ) occur on the mature leaves. Frass is thin threadlike, deposited along meandering larval trajectory in the mine. The fully grown larva exits the mine, falls to the ground, and pupates underground.

Material examined.

• 1 adult, Fukuji-onsen , Takayama, Gifu Pref., 3-X-2018 (as larva on Clematis stans ), emerged on 9-V-2018 (Fig. 10 A – D ) ; • 1 adult, Iwakura , Sakyo, Kyoto Pref., 12-X-2009 (as larva on C. stans ), emerged on 10-V-2009 .

Figures

Figure 10. Habitus of adults and leaf mines of four Argopus species A – D A. balyi E – H A. clypeatus. Host plants A – D Clematis stans at Fukuji-onsen, Gifu Pref. E – H Clematis terniflora (E – G at Tsushima Nagasaki Pref., H at Uri-tôge, Shizuoka Pref.).