본 연구에서는 가래나무를 흡즙하는 Stomaphis matsumotoi Sorin, 1995를 국내 최초로 보고한다. 무시충의 생체 사진과 표본을 통한 형태 정보를 수록하였다.

The aphid genus Stomaphis Walker, 1870 (Hemiptera: Aphididae: Lachninae) is Palaearctic origin group with 30 valid species. It is associated with variable woody host plants, having very long rostrum, which enables them to feed crevices in thick bark of trees. In this study, Stomaphis (stomaphis) pini pini is newly recorded in the Korean Peninsula on Pinus densiflora (Pinaceae). We described morphological features of alate viviparous females, apterous males and oviparous females, respectively. Furthermore, little known forms, sexual morphs of giant oviparous females and dwarfish apterous males are observed.

The subfamily Lachninae Herrich-Schaeffer, 1854 consist of about 400 species belonging to 19 genera world-wide. Lachninae are distributed mostly in the Nearctic, Oriental and Palaearctic Regions. Their host plants are known as grasses, deciduous tree and conifers. Taxonomic study of Lachninae has been dealt with some authors in several countries, whereas it has rarely performed in the Korean Peninsula after Lee et al. (1994). Here, we review the subfamily Lachninae from the Korean Peninsula, focusing on its taxonomic history and diversity.

The genus of Stomaphis (Aphididae: Lachninae) is stem or root feeding aphid on trees and can easily be distinguished in having the very long rostrum which extends beyond the length of body. Most of species are monoecious holocyclic without host alternation and attended by ants. Stomaphis sinisalicis Zhang & Zhong, 1982 (Aphididae: Lachninae) is recognized for the first time in Korea, on Salix babylonica L., S. koreensis Anderss. and S. hulteni Floderus (Salicaceae).

The genus of Stomaphis (Aphididae: Lachninae) is stem or root feeding aphid on trees and can be easily distinguished in having the very long rostrum which extends beyond the length of body. Most of species are monoecious holocyclic without host alternation and attended by ants. Based on body appearance and COI gene sequence, we report a Stomaphis betulidahuricae Zhang and Qio, 1999 (Aphididae: Lachninae) for the first time in Korea, on Carpinus cordata Bl., C. laxiflora Bl., and Acer palmatum Thunb.

A genus Schoutedenia (Hemiptera: Greenideinae) is an ancient group of Gondwanaian distribution occurring on the plant family Euphorbiaceae. In this study, we newly report Schoutedenia sp. nov., collected from Phyllanthus sp. (Euphorbiaceae) from Cambodia. Review for three species including Schoutedenia sp. nov., with identification key are presented.

Uroleucon is one of the large aphid genera including some important pest on agricultural crops, mostly feeding on Asteraceae, few species on Campanulaceae. In this study, we suggest the phylogenetic position of Uroleucon in the tribe Macrosiphini, and subgeneric relationship of the main three subgenera using mitochondrial and nuclear genes: tRNA-leucine+cytochrome oxidaseⅡ(tRNA+COII) and Elongation factor-1 alpha gene (EF1α)). With the results of comprehensive molecular phylogenetic study by Bayesian phylogeny (BP) and Maximum-likelihood (ML) using combined data sets of two molecular markers, we reconstruct subgeneric relationship with the data of host plants and morphological characters.

Macrosiphini is the most largest group in aphids, comprising near half of the described aphid species. The existence of Macrosiphini could be related to host alternation and various life cycle. Since the phylogenetic relationship of the tribe Macrosiphini has been still controversial, we analyzed Bayesian phylogeny (BP) and Maximum-likelihood (ML) based on molecular data (cytochrome oxidase I, tRNA-leucine+cytochrome oxidase II, 16S ribosomal RNA and elongation factor-1 alpha gene), and compared with the Shaposhnikov (1998) 's subtribal division: Macrosiphina, Myzian, Anuraphidina and Liosomatinae. Analyses for host range association with the morphological characters (e.g. Siphunculus and antennal tubercle on head) correspond to the tendency of host range radiation in the tribe Macrosiphini.

The genus Illinoia is originally distributing in North America, few species found in other continents as exotics with the introduction of their hosts as ornamental plants and weeds. Recently, we confirmed two Illinoia species in Korea as the first record of this genus in the Eastern Part of Palaearctic: Illinoia goldamaryae (Knowlton 1938) on Erigeron sp. (Asteraceae) and I. liriodendri (Monell 1879) on Liriodendron tulipifera (Magnoliaceae). Two exotic aphids are illustrated, diagnosed, and discussed for their host plants, distribution, etc.

In the tribe Macrosiphini (Hemiptera: Aphididae), we discovered two new records in Korea, Capitophorus formosartemisae (Takahashi, 1921) and Hyperomyzus lactucae (Linnaeus, 1758) collected on Artemisia princeps and Sonchus oleraceus, respectively. They are illustrated and described, based on the macerated slide specimens of the apterous viviparous females.

A total of six species in the subgenus Uroleucon (Uromelan) is revised from the Korean Peninsula. Uroleucon adenophora (Matsumura, 1918) is recognized for the first time in Korea, collected on the young upper stem of Adenophora sp. (Campanulaceae). It is described, illustrated, and measured for apterous viviparous females.