The pea aphid Acyrthosiphon pisum is a polyphagous, sap-sucking insect pest with a worldwide distribution. We investigated the developmental time and survivorship in nymphs and longevity and fecundity in adults of A. pisum at five different temperatures applying with following two programs, TWOSEX-MSChart and TIMING-MSChart. Regarding to thermal effect on A. pisum, in this presentation, we will discuss about a population projection and following population parameters calculated in this study: adult preoviposition period (APOP), total preoviposition period (TPOP), oviposition days, eggs per reproductive female, first age of survival rate <50%, proportion of male and female individuals, and life table parameters (net reproductive rate, intrinsic rate of increase, finite rate of increase, and mean generation time).

Cinara (Cinara) cedri cedri Mimeur, 1936 is extensively distributed in Europe (France, Italy, Spain, and UK), North Africa (Morocco and Algeria), North America (California and New York), South America (Argentina), Middle East (Cyprus, Iran, Iraq, Israel, Lebanon, Syria, and Turkey), and Asia (China). Recently, this species was also invaded into China. In 2018, C. (Cinara) cedri cedri was firstly discovered on one plant, Cedrus deodara, in Korea. In this study, we provide full redescription in detail.

The genus Eriosoma Leach, 1818 belonging to the subfamily Eriosomatinae (Hemiptera: Aphididae) includes 46 species in the world. The genus is mostly distributed in the Holarctic and Oriental regions. Most of the species in the genus form leaf-roll galls on Ulmus species. Until now, there are few studies about the genus on the morphological taxonomy in Korea. Up to date, seven species of the genus have been recorded from Korea. In the present study, a total of nine species of the genus is revised. Among them, two species, Eriosoma alabastrum Pashtshenko, 1988 and Eriosoma ulmi ulmi (Linnaeus, 1758), were discovered for the first time in Korea. We provide a key to the Korean species and full redescriptions in detail.

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.

아카시아진딧물은 다양한 기주식물을 먹이로 하는 곤충으로 전 세계적으로 분포하고 있다. 본 연구는 아카시아진딧물 약충의 발육기간, 무시성충의 수명과 번식능력을 조사하기 위하여 10.0, 15.0, 20.0, 25.0, 30.0, 32.5℃ 정온조건에서 실험을 실시하였다. 조사된 모든 항온조건에서 아카시아진딧물은 성공적으로 성충으로 발육하였고 발육율은 온도가 상승할수록 증가하였다. 아카시아진딧물 약충시기별 발육영점온도와 유효적산일은 선형회귀분석 방법을 이용하여 계산하였다. SSI모델을 이용하여 발육최저, 최고한계를 추정하였다. 아카시아진딧물 전체약충기간의 발육영점온도와 유효적산일은 각각 5.3℃과 128.4DD였다. SSI모델을 이용한 아카시아진딧물의 발육최저, 최고온도는 17.0℃ 과 34.6℃였으며 이들간의 차이는 17.5℃였다. 전체약충기간의 발육완료분포모형은 3-매개변수 Weibull함수를 이용하여 나타내었다. 온도와 관련된 아카시아진딧물의 생물적 특성을 생명표분석을 통해 나타내었다. 내적자연증가율은 25℃에서, 개체군순증가율은 20℃에서 가장 높았다. 다른 지역에 서식하는 아카시아진딧물의 생물적 특성을 비교 분석하였다.

유기농경지에서 문제가 되는 해충을 방제하기 위하여 농가에서는 식물추출물 등 다양한 자가제조 유기농업자재를 활용하고 있다. 본 연구에서는 농가 자가제조 유기농업자재를 이용하여 목화진딧물(Aphis gossypii)과 꽃노랑총채벌레(Franklineilla occidentalis)에 대한 살충효과를 시험하였다. 유기농업자재는 유기재배 농가에서 직접 수집하였으며 식물추출물로는 마늘, 돼지감자, 은행잎 등의 식물추출물과 목초액, 식물오일 등 8종의 자재를 이용하였다. 해충에 대한 살충시험은 25℃, 60% 습도 조건의 곤충사육실에서 이루어졌다. 처리시험을 위해 오이절편을 페트리디쉬에 넣고 시험곤충을 접종하여 농가수집자재를 원액, 30배, 100배, 300배로 희석하여 충체 살포법으로 처리하였다. 처리 후 24시간, 36시간, 72시간 후 사충률을 조사하였다. 진딧물의 경우 100배 희석처리에서 약초액비가 75%, 유화오일이 62.5% 은행잎액비가 42.5%의 살충효과를 각각 보여주었다. 꽃노랑총채벌레에는 협죽도와 마늘이 94.7%와 88.0% 살충효과를 보여주었다.

본 연구에서는 최근 확인된 Neophyllaphis podocarpi Takahashi, 1920를 기반으로 Neophyllaphidinae Takahashi, 1921 아과를 국내 최초로 보고한다. 무시형과 유시형 처녀생식세대의 암컷 사진 및 유시형 산란모, 수컷 형태 정보를 수록하였다.

본 연구에서는 Kaochiaoja arthraxonis (Takahashi, 1921) 종을 기반으로 Kaochiaoja Tao, 1963 속을 국내 최초로 보고한다. 무시형 처녀생 식세대의 암컷 사진 형태 정보를 제시하였다.

Aphis gossypii is considered as one of the most polyphagous aphid species and found throughout the world. This pestinduce plant deformation and transmit viruses by feeding the host plant. In Korea, A. gossypii has been occurred in manycrops, however, the population genetic structure of this pest has not been revealed. In this study, we used eight microsatellitemarkers to analysis the population genetic structure of A. gossypii in Korea. We collected A. gossypii specimens frompepper greenhouse in 2016 (18 sites) and 2017(15 sites). As a result, two genetic cluster (△K=2) showed in structureanalysis. As we compared the cluster result between 2016 and 2017, several populations appeared opposite clustering groupeven the samples were collected in same site and crop. Therefore, more samples are required from different greenhouse(same host) to identify the accurate genetic cluster of province in Korea. From this study, the genetic variation revealedfrom A. gossypii and this information may develop sustainable management of A. gossypii.

The world’s climate is changing. Aphids are emerging as lookouts of climate change and they are a good model to understand these environmental changes especially through migratory behavior. We monitored of the occurrence of aphid in same place (Pyeongchang) of seed potato field since 1977 in Korea. Dates of the start of spring migration of these aphids’ species were getting earlier. And, the pick of autumn migration were gradually move to winter season. Moreover, annual total numbers of collected aphids were also dramatically increased during 40 years. There is potential threats of distribution expansion of aphid species in Korea where is the hot spot of climate change with average temperature over 1.7 °C increase for 4 decades. Therefore we hypothesized that aphids’ migration pattern could be associated with temperature

목화진딧물(Aphis gossypii)은 고추 재배 초기, 감로 배출을 통하여 잎 표면의 그을음병을 발생시켜 광합성 유발과 작물의 상품성을 저하시킨다. 본 연구에서는 8개의 초위성체 마커(Vanlerberghe-Masutti et al., 1999)를 활용하여 국내 18지역 및 인도네시아 5지역의 고추에서 채집한 목화진딧물의 단편분석을 통해 지역 간의 유전적 유연관계 및 다양성을 분석하였다. 그 결과, 23지역에서 나타난 평균 대립유전자 수 (NA)는 2.750~6.375, 평균 이형접합도 관측치(HO)는 0.425~0.878, 평균 이형접합도 기대치(HE)는 0.354~0.719, 그리고 평균 근친교배(FIS)는 –0.810~0.166의 범위로 나타났다. 근친교배(FIS) 값이 negative으로 나왔다는 것은 근친교배율이 매우 낮은 것을 의미한다. 23지역의 유전적 클러스터 분석 결과, △K의 값은 2로 확인 되었다. 이러한 결과는 조사 지역 개체군간 유전적 구조의 차이가 존재함을 나타내며 개발된 목화진딧물 초위성체 마커가 국내 목화진딧물 개체군의 유전적 구조를 분석하는 데 있어 하나의 좋은 기준이 될 수 있음을 시사한다.

Calaphidinae is one of the most species rich group in Aphididae. However their phylogenetic relationship is poorly understood. In this study, we reconstructed phylogenetic relationship of Calaphidinae and closely related groups to confirm the taxon boundary and ingroup relationship such as tribe and genera. In addition, evolutionary hypothesis of ancestral host-plant relationship was tested. We performed Bayesian inference and maximum likelihood analyses of combined 4 mitochondrial (ATP6, COI, COII, CytB) and 1 nuclear (EF1α) sequences. Phylogenetic results suggested that Calaphidinae is not a monophyletic and Saltusaphidinae is nested in Calaphidinae. Phyllaphidinae forms a basal clade as the most primitive group of Calaphidinae. Reconstruction of ancestral host plant of Calaphidinae indicated that Calaphidinae might have evolved on members of Fagales plants.

Two cryptic species of the black-tailed bamboo aphid, Takecallis arundicolens (Clarke, 1903), are revealed based on DNA barcoding and nymph morphology. Three species, T. arundicolens, T. sp.1 nov. and T. sp.2 nov. have significant genetic differences ranged from 2-8% but, only subtly differing in their nymph morphology. In this study, molecular analyses and morphological comparisons are presented including species keys for alatoid nymphs.

The soybean aphid, Aphis glycines Matsumura, was introduced from East Asia (EA) into North America (NA) and is now widely established in NA. To compare soybean aphid populations between the native and invasive regions, we examined 689 individuals obtained from 28 different collections in NA and EA. A total of 8 microsatellite loci were used for population genetics statistics. Gene diversity and mean number of alleles in NA populations averaged 0.40 and 2.70, respectively, whereas in EA they averaged 0.55 and 4.32, respectively. Structure analysis of all populations revealed two distinct structures in the invaded and in the native regions. Among EA populations, certain Korean populations were genetically closest to NA populations, especially those from Ohio and Delaware. An approximate Bayesian computation test also supports an introduction into NA from Korea.