Rhadinosa nigrocyanea (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

Rhadinosa nigrocyanea (Motschulsky, 1860)

Fig. 19 I – P

Host plant.

Poaceae : Miscanthus condensatus Hack. , M. sinensis , M. oligostachyus Stapf , M. tinctorius (Steud.) , Pleioblastus chino var. viridis .

Leaf mine.

Upper-layer linear-blotch mine on mature leaf (Fig. 19 N – P ). Frass is granular, deposited along larval trajectory in the mine. The fully grown larva pupates in the mine.

Material examined.

• 1 adult, Hatabe-gen’ya , Aso, Kumamoto Pref., 16-VII-2018 (as larva on Miscanthus sinensis ), emerged on 21-VII-2018 (Fig. 19 I – O ) ; • 1 adult, Fukube-dani , Hakusan, Ishikawa Pref., 1-X-2019 (as larva on M. tinctorius ), emerged on 14-X-2019 (Fig. 19 P ) ; • 2 adults, Mt. Kujû , Kokonoe, Kusu-gun, Ôita Pref., 27-IX-2019 (as larva on M. oligostachyus ), emerged on 7–11-X-2019 ; • 1 adult, Mt. Yufu , Beppu, Ôita Pref., 23-VII-2017 (as larva on Pleioblastus chino var. viridis ), emerged on 26-IX-2017 .

Figures

Figure 19. Adult morphology and leaf mines of three Hispini species A – H Dactylispa issikii I – P Rhadinosa nigrocyanea Q – W Platypria melli A, I, Q dorsal B, J, R ventral C, K, S lateral D, L, T frontal views of adults E, M, U exuviae F, G, N – P, V, W leaf mines. Host plants G, H Pleioblastus chino at Tsuge, Kuma, Kumamoto Pref. B – O Miscanthus tinctorius at Hatabe, Kumamoto Pref. P Miscanthus tinctorius at Fukube-dani, Hakusan, Ishikawa Pref. V, W Hovenia dulcis at Kin, Tsushima Is., Nagasaki Pref.