Zeugophora nigricolis (Jacoby, 1885)

Fig. 2 C – E

Host plant.

Celastraceae: Euonymus sieboldianus Blume.

Leaf mine.

Upper-layer ophiogenous blotch mine on the mature leaf (Fig. 2 D, E). Within the blotch, the larval trajectory itself is linear and meandering compactly. The egg is laid along the basal margin of the leaf and the hatched larva mines along the leaf margin, abruptly expanding the mine. Within the blotch, the larval trajectory itself is linear and meandering compactly. Frass is granular and deposited along the meandering trajectory. The fully grown larva exits the mined leaf, falls to the ground, and pupates underground.

Material examined.

• 2 adults, Sugadaira, Ueda, Nagano Pref., 18-VI-2017 (as larva on Euonymus sieboldianus), emerged on 20–28-VII-2017 (Fig. 2 C – E) .