Notosacantha ihai Chûjô, 1958

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

Notosacantha ihai Chûjô, 1958

Fig. 20 A – Y

Host plant.

Proteaceae : Helicia cochinchinensis Lour. ; Pentaphylacaceae : Adinandra ryukyuensis Masam. , Eurya japonica Thunb. ; Theaceae : Schima liukiuensis Nakai ; Staphyleaceae : Turpinia ternata Nakai ; Melastomataceae : Bredia okinawensis (Matsum.) , B. yaeyamensis (Matsum.) ; Symplocaceae : Symplocos glauca (Thunb.) , S. sonoharae Koidz. ; Loganiaceae : Gardneria liukiuensis Hatus. All these plants are woody plants having coriaceous evergreen leaves.

Leaf mine.

Upper-layer linear-blotch, often radiate mine on mature leaf (Fig. 20 D, F – H, J – L, N – P, R – T, V – W, Y ). The mine often has blind ends and branches, and the outline of the mine is often undulated. The larva sometimes relocates its mine. Frass is granular, often discharged outside from slit made by the larva. The fully grown larva pupates in the mine, especially in the mine newly constructed for pupation.

Material examined.

• 1 adult, Mt. Yuwan , Uken, Amami-ôshima Is., Kagoshima Pref., 25-V-2017 (as larva on Turpinia ternata ), emerged on 15–18-VI-2017 (Fig. 20 A – D ) ; • 1 adult, Yona , Kunigami, Okinawa Is., Okinawa Pref., 19-V-2011 (as larva on Symplocos glauca ), emerged on 13-VI-2011 (Fig. 20 E, F ) ; • 2 adults, Mt. Yuwan , Uken, Amami-ôshima Is., Kagoshima Pref., 29-IV-2005 (as larva on Symplocos sonoharae ), emerged on 25-V-2005 (Fig. 20 G ) ; • 2 leaf mines, Mt. Nishime , Kunigami, Okinawa Pref., 17-III-2020 on Gardneria liukiuensis (Fig. 20 H ) ; • 1 adult, Mt. Nishime , Kunigami, Okinawa Is., Okinawa Pref., 17-III-2020 (as larva on Eurya japonica var. japonica ), emerged on 9-V-2020 (Fig. 20 I – K ) ; • 2 leaf mines, Mt. Yuwan , Uken, Amami-ôshima Is., Kagoshima Pref., 23-XI-2023 on Schima liukiuensis (Fig. 20 L ) ; • 2 adults, Yona , Kunigami, Okinawa Is., Okinawa Pref., 29-III-2018 (as larva on Adinandra ryukyuensis ), emerged on 4–9-V-2018 (Fig. 20 M – P ) ; • 3 adults, Yona , Kunigami, Okinawa Is., Okinawa Pref., 28-III-2018 (as larva on Helicia cochinchinensis ), emerged on 30-IV – 5-V-2018 (Fig. 20 Q – T ) ; • 1 adult, Mt. Nishime , Kunigami, Okinawa Is., Okinawa Pref., 17-III-2020 (as larva on Bredia okinawensis ), emerged on 1-V-2020 (Fig. 20 U – W ) ; • 1 adult, Komi , Iriomote Is., Yaeyama, Okinawa Pref., 28-III-2018 (as larva on Adinandra ryukyuensis ), emerged on 4-IV-2018 (Fig. 20 X, Y ) .

Figures

Figure 20. Adult habitus and leaf mines of Notosacantha ihai on various host plants A – D Turpinia ternata at Mt. Yuwan, Amami-ôshima, Kagoshima Pref. E, F Symplocos glauca at Yona, Kunigami, Okinawa Pref. G Symplocos sonoharae at Mt. Yuwan, Amami-ôshima, Kagoshima Pref. H Gardneria nutans at Mt. Nishime, Kunigami, Okinawa Pref. I, J Eurya japonica at Mt. Nishime, Kunigami, Okinawa Pref. K Eurya japonica at Yona, Kunigami, Okinawa Pref. L Schima wallichii at Mt. Yuwan, Amami-ôhsima, Kagoshima Pref. M – P Adinandra ryukyuensis at Yona, Kunigami, Okinawa Pref. Q – T Helicia cochinchinensis at Yona, Kunigami, Okinawa Pref. U – W Bredia okinawensis at Mt. Nishime, Kunigami, Okinawa X, Y Bredia yaeyamensis at Komi, Iriomote Is., Okinawa Pref.