Syringa reticulata North America. Syringa reticulata Syringa reticulata (Japanese tree lilac; ; ) is a species of Lilac, native to eastern Asia: in northern Japan (mainly Hokkaidō), northern China (Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Ningxia, Shaanxi, Shanxi, Sichuan), Korea, and far southeastern Russia (Primorye). "Syringa reticulata" is a deciduous small tree growing to a height of 39' (12 m), rarely to 49' (15 m), with a trunk up to 11.8" (30 cm), rarely 15.7" (40 cm) diameter; it is the largest species of lilac, and the only one that regularly makes a small tree rather than a shrub. The
Gracillaria albicapitata Gracillaria albicapitata Gracillaria albicapitata is a moth of the Gracillariidae family. It is known from the islands of Hokkaidō and Honshū in Japan and the Russian Far East. The wingspan is 9.8-12.5 mm. The larvae feed on "Fraxinus lanuginosa", "Fraxinus mandshurica", "Syringa amurensis", "Syringa reticulata" and "Syringa vulgaris". They mine the leaves of their host plant. Young larvae mine directly into the middle layer of the parenchymal tissue of the leaf or leaflet. The mine made by the larvae of the first three instars is irregularly large blotchy or wide linear, and inter-parenchymal, with a few weak wrinkles on both