The dark spot on the postnotum appears to be consistent and the most noticeable character especially in lighter-colored adults, but refer to Miyatake (1964) for full description
Range
native to E. Asia (Japan, Taiwan, Korea), adventive in California(1), North Carolina, and South Carolina (Bertone, 2016)
First detected in North America in 2007 in nursery shipments of Pittosporum in California(2)
Print References
Miyatake Y. 1964 - A revision of the subfamily Psyllinae from Japan (Hemiptera: Psyllidae) II. Journal of the Faculty of Agriculture, Kyushu University 13: 1-37
Bertone, M.A. 2016 - Cacopsylla tobirae (Miyatake) (Hemiptera: Psyllidae), a Pest New to North and South Carolina on Japanese Pittosporum (Pittosporaceae: Pittosporum tobira). Proceedings of the Entomological Society of Washington 118(4):641-644. https://doi.org/10.4289/0013-8797.118.4.641