Halticorcus duodecimmaculata

Halticorcus duodecimmaculata (S. - H. Chen, 1934) Fig. 8 U – X Host plant. Polypodiaceae: Phymatosorus scolopendria, Selliguea yakushimensis (Makino). Leaf mine. Full-depth linear-blotch mine on mature leaf (Fig. 8 V – X). Frass is thread-like, thin, and often intermittent, and deposited along meandering larval trajectory. The fully grown larva exits the mined leaf, falls to the ground, and pupates underground. Material examined. • 5 adults, Ômija, Iriomote Is., Yaeyama, Okinawa Pref., 27-III-2018 (as larva on Phymatosorus scolopendria), emerged on 25-V – 7-VI-2018 (Fig. 8 U, V); • 9 adults, Urauchi, Iriomote Is., Yaeyama, Okinawa Pref., 11-V-1999 (as larva on Selliguea yakushimensis collected by Shirô Kobayashi), emerged on? - VI- 1999 (Fig. 8 W, X).