Psylliodes subrugosa Jacoby 1885

Psylliodes aff. subrugosa Jacoby, 1885 Fig. 7 Q – T Note. Two female specimens were reared and tentatively identified as related to this species, but there is a possibility that this is an undescribed species. Host plant. Brassicaceae: Arabis hirsuta (L.). Crucifers are known as host plants (Kimoto and Takizawa 1993), while its biology has not been reported. Leaf mine. Linear mine in the midrib and the petiole of mature leaf (Fig. 7 R – T). The egg is laid on the petiole, and the hatched larva mines the petiole, and sometimes enter the midrib. The mined petiole becomes blackish. Frass is deposited compactly in a few parts of the mine, and sometimes discharged from the mine through perforated holes. The fully grown larva (Fig. 7 N) exits the mined leaf, falls to the ground, and pupates underground. The adult emerges ~ 1 month after pupation. Material examined. • 2 adults, Higashimata, Shimosuwa, Suwa-gun, Nagano Pref., 28-VI-2020 (as larva on Arabis hirsuta), emerged on 9-VIII-2020 (Fig. 7 Q, S, T): several leaf mines on Arabis hirsuta, Sanjiro, Matsumoto, Nagano Pref., 28-VII-1995 (Fig. 7 R).