Cecidomyiid galls found on Jeju Island and in Sunchon and its vicinity, South Korea

A total 25 sorts of cecidomyiid gall induced on at least 20 plant species across 12 families were found on Jeju Island in 2005 and in Sunchon and its vicinity in 2009. Among them, 13 sorts were new to Korea. These new findings have brought the total number of sorts of Korean cecidomyiid gall up to 67, of which 58 (86.6 %) are common to Japan. Figures for five sorts of gall that were not shown in the colored illustrated book (Yukawa & Masuda, 1996) are provided in the present paper for future convenience in identifying galls and gall-inducing cecidomyiids