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Corythucha marmorata (Uhler) belonging to the family Tingidae (Hemiptera) has been reported in Korea. In 2013, survey swere conducted to study its morphological characteristics, geographical distribution, and host plants. The adult is brown white and 2.77-3.28 mm in length, and the mature nymph is yellowish brown. Heavily infested trees appear yellowish white because they are fed on by the nymphs on the under surface of host plants. C. marmorata were found between early June and late October, and their number speaked in early July to late August. In 2013, the occurrence of C. marmorata was confirmed in 27 cities and counties nationwide, and 8families and 24 species of host plants were identified. C. marmorata feeds on the following major host plants: Conyza canadensis, Aster pilosus, Helianthus annuus, Artemisia princeps, Rudbeckia bicolor, and Solanum melongena.Key words: Hemiptera, Tingidae, Corythucha marmorata, Host plant, Distribution :     .   2013    ,   .   2.77-3.28 mm       .         .  6  10  , 7 -8  . 27      8 24 .   , , , , ,  .: , , , , *Corresponding author: un19781978@naver.comReceived October 23 2013; Revised November 7 2013Accepted January 28 2014(Hemiptera) (Tingidae)           37  (Paek et al., 2010).          (Platanus orientalis L.) (P. occidentalis L.)   (Corythucha ciliata (Say)),  (Rhododendron mucronulatum Turcz.), (Rh. schlippenbachii Maxim.), (Rh. indicum (L.) Sweet)    (Stephanitis pyrioides (Scott)),   (Pyrus pyrifolia var. culta (Makino) Nakai), (Malus pumila Mill.), (Prunus salicina Lindl.), (Rosa spp.), (Prunus serrulata var. spontanea (Maxim.) E.H.Wilson)    (Stephanitis nashi Esaki et Takeya)  (Chung et al., 1996; Hwang and Choi, 1998).    1995 , ,     (Chung et al., 1996),

Geographical Distribution and Host plants of Corythucha marmorata (Uhler) (Hemiptera: Tingidae) in Korea