The superfamily Psylloidea of Korean Peninsula is systematically revised. Systematic studies on the Psylloidea are conducted mainly three themes: (1) The taxonomic review of superfamily Psylloidea (Hemiptera: Sternorrhyncha) in the Korean Peninsula, (2) DNA barcoding for the correction of taxonomic confusions and confirmation of seasonal forms, and (3) molecular phylogeny of Psylloidea to elucidate higher group relationships and to test current controversial morphological classifications.

Psyllids are small sap sucking insects. Around 4,000 species are described worldwide. They show their greatest diversity in the tropical and south temperate zones. Several psyllid species are pest of crops such as citrus, pear, potato and tomato. They has been also responsible for extensive damage to ornamental trees. In this study, we report four psyllids species, new to Korea: Cacopsylla satsumensis (Kuwayama, 1908) on Raphiolepis indica (Rosaceae), Calophya nigridorsalis Kuwayama, 1908 on Rhus spp. (Anacardiaceae), Carsidara limbata Enderlein, 1926 on Firmiana simplex (Sterculiaceae) and Trioza machilicola Miyatake, 1968 on Machilus thunbergii (Lauraceae). All of them were found as large colonies, severely feeding on host plants, excreting sticky honeydew on which blackish sooty mold grows. Carsidara limbata secrete pale wax masses. Cacopsylla satsumensis cause leaf distortion and Trioza machilicola make galls underside of the leaves.

Fourteen species of the genus Aulacorthum Mordvilko 1914 (Sternorrhyncha: Aphididae) are recognized from the Korean Peninsula. One new species, Aulacorthum artemisiphaga sp. nov. on Artemisia princeps and Artemisia stolonifera (Asteraceae) was compared with the seven congeneric species based on their morphological and molecular characteristics. Morphometric analysis using 29 morphological characters shows that A.artemisiphaga sp. nov. can be distinguished from the seven congeneric species. In comparisons of COI and CytB genes, A. artemisiphaga sp. nov. had inter-specific genetic distances (average 7.5% for COI and average 7.4% for CytB) similar to those of other congeneric species. Host plants of the Korean Aulacorthum are reviewed.

A total of 22 species belonging to nine genera of the tribes Phenacoccini, Rhizoecini, and Sphaerococcini (Sternorrhyncha: Pseudococcidae) are noted in Korea, with descriptions and illustrations for full grown female. Among them, three species, Heliococcus puerariae sp. nov., Heliococcus zoysiae sp. nov., and Phenacoccus rubicola sp. nov., are new to science, and four species, Coccura comari (Kilnow, 1880), Heliococcus kuriensis Danzig, 1971, Puto erigeroneus (Kanda, 1959), and Puto orientalis Danzig, 1978, are reported for the first time from the Korean Peninsula, and a species is newly known from South Korea. Eleven species, which previously recorded in Korea, have not been found from South Korea during this study.

한국산 흰깍지벌레속(진딧물아목, 깍지벌레과)의 5종에 대해 암컷 성충의 외부 형태를 바탕으로 형태적 특징을 기술하고 도해하였고, 검색표도 작성하였으며,각 종에 대한 기주식물을 나열하였다. 이중 청미레덩굴흰깍지벌레(신칭)는 한국에서 처음으로 기록되는 종이다

감나무에서 문제해충으로 알려진 주머니깍지벌레(Eriococcus lagerstroemiae Kuwana)를 감나무주머니깍지벌레(신칭: Asiacornococcus kaki (Kuwana))로 정정하고, 이들 2종의 정확한 동정을 위해 형태적 특징을 비교하고 도해하였으며, 기주식물들도 포함하였다. Asiacornococcus Tang & Hao, 1995는 한국 미기록 속으로 보고한다.

This paper treats the superfamily Psylloidea Burmeister, 1835 from Korea. A total of 81 species belongong to 19 genera under 6 families are represented in Korean fauna, among them 1 subspecies, 26 species, 1 genus, 2 tribes with 1 subfamily are new to science, and 10 species are newly recorded from Korea. The following new taxa are proposed: Metapsyllinae subfam. nov., Epitriozini trib. nov., Trichochermini trib. nov., Koreaphalara koreana gen. et sp. nov., Aphalara jungsukae sp. nov., Psylla peninsularies sp. nov., P. Peninsularis hanlasanensis sp. et ssp.nov., p. hanlabori sp. nov., P. palgongsana sp. nov., P. pseudoviburni sp. nov., P.juwangsana sp. nov., P. seungmoi sp. nov., P.seonhyeongae sp. nov., P. silvestris sp. nov., P.bibari sp. nov., P. koreacola sp. nov., P.koreacola sp. nov., P. quelparticola sp. nov., P. ulleungensis sp. nov., P. bibari sp. nov., P. jukyungi sp. nov., P. lineaticeps sp. nov., P. truncaticephala sp. nov., P. obongsana sp. nov., P. kwonnabiae sp. nov., P. sangjaei sp. nov., P. nopeunsanicola sp. nov., P. subcoccinea sp. nov., Bactericara breviatiformis sp. nov., B. koreostriola sp. nov., and B. nobilis sp. nov. The famous pear sucker, Psylla pyricoal, and apple sucker, P. mali are discovered for the first time in Korea. Keys are given for all the taxa respectively, some illustrations of various characters are provided. Host plants and domestic localities for each species are arranged.