Hippuriphila babai

Hippuriphila babai (Chûjô, 1959) Fig. 6 A – F Host plant. Equisetaceae: Equisetum arvense L., E. fluviatile L. Leaf mine. Full-depth or internal linear mine on leaf-like branch and the green stem (Fig. 6 B – E). The larva is cylindrical (Fig. 6 F) and sometimes exits its mine and moves to the other shoot. Frass is thread-like, deposited in the mine. Material examined. • 2 adults, Mt. Teine, Sapporo, Hokkaidô, 9-X-1998 (as larva on Equisetum arvense), emerged on 25-VII – 3-VIII-1998 (Fig. 6 A – C); • 2 adults, Rebun Is., Hokkaidô, 9-VII-1995 (as larva on E. arvense), emerged on 25–27-VII-1995; • 5 adults, Bibi, Chitose, Hokkaidô, 30-VI-2023 (as larva on E. fluviatile), emerged on 17–20-VII-2023.