Age-stage two sex life table was constructed for a predatory lacewing, Chrysoperla carnea feeding on 3 different canola feeding aphids; mealy cabbage aphids, Brevicoryne brassicae (L.), mustard aphid, Lipaphis erysimi (Kaltenbach) and green peach aphid, Myzus persicae (Sulzer). The experiment was performed under laboratory conditions at 25± 1oC and 65 ± 1% RH. The immature development duration was shortest on M. persicae (17.3 days). While, C. carnea completed its immature developmental period in 21.1 days, which was longest among other, tested aphids. Similarly, survival of C. carnea was higher on feeding M. persicae and lowest on L. erysimi. Female egg laying of predator was also higher on M. persicae, followed by B. brassicae and L. erysimi. These results show that M. persicae favors the quick development and higher reproduction of C. carnea as compared to B. breassicae and L. erysimi. This information is useful in relation to mass rearing of C. carnea and in biological control of canola aphids by using C. carnea.

Chrysopidae is a cosmopolitan group of Neuroptera, with 85 genera and 1,200 species recorded in the world. Genus Nineta is a small group of the family, with almost 20 species recorded worldwide. They can be recognized by large sized body than that of other genera. In Korea, only one species, Nineta vittata (Wesmael, 1841) has been recorded so far. Here we present Nineta itoi, another new record, in Korea. Here we provide a brief description, photos of adult and male genitalia, COI barcode sequence, and a key based on diagnostic characters.

그 동안 한국 풀잠자리과 Italochrysa속은 오직 1종만이 기록되었으나, 한국 미기록종인 몸노랑풀잠자리(Italochrysa nigrovenosa Kuwayama, 신칭)의 국내 분포를 추가로 보고한다. 이 종에 대한 간략한 기재와 속내 분류키, 그리고 암컷 성충과 생식기의 사진을 제공한다.

Biological control of Pseudococcus comstocki (Kuwana) with new indigenous natural enemy (Chrysoperla nipponensis (Okamoto)) was carried out on tropical plant (Trachycarpus fortunei (Hook)) from May to July in 2013. Control experiments were conducted at Tropical Plant Resources Research Center of Korea National Arboretum, Pocheon, Korea. Chrysoperla nipponensis was released once (20 larvae/m2) to control Pseudococcus comstocki on 11st May in 2013. We investigated the density of leaf-feeding P. comstocki at intervals of approximately 7 days after introducing their natural enemy, C. nipponensis. The densities of P. comstocki were suppressed 22.4% (after 4 weeks) and 8.2% (after 6 weeks) after introducing C. nipponensis.

Yellow tea thrip (Scirtothrips dorsalis Hood (Thysanoptera: Thripidae) is anthophilous pests of many crops worldwide including five flavor berry. And the mealy bug (Pseudaulacaspis cockerelli (Cooley) (Hemiptera: Diaspididae)) is one of the hardest pests to control. Its body is covered with white waxy threads, which often make a chemical pest control useless. Five flavor berry (Schisandra chinensis Baill) is used in traditional Chinese medicine. So, the development of biological control against the major pest on five flavor berry is of great interest. In this work, a treatment of Chrysoperla nipponensis (Okamoto) was applied to five flavor berry fields infested by P. cockerelli and a treatment of Amblyseius swirskii Athias-Henriot was applied to two types of five flavor berry fields infested by S. dorsalis. Even though our tests found significant differences between the two culturing method(sod culture, nonwoven type mulching), the treatment of biological control agents decreased or a little increased the fruit damage, which was comparable to the chemical insecticide treatment. In the sod culture experiment, thrip population was significantly low and increased at a lower rate than in the nonwoven type mulching. It may be suggested from these results that A. swirskii and C. nipponensis as IPM program and sod culture could be incorporated into the integrated pest management system on five flavor berry.

Study of the Korean Chrysopidae has been scarce and only 11 species in 6 genera have been recorded so far(Checklist of Korean Insect, 2010). Genus Italochrysa has been a monotypic genus in Korea with I. japonica. Here we report Italochrysa nigrovenosa as another species of Italochrysa found in Korea. Images of adult and it’s genitalia information are provided.

This study was carried out to investigate the status of spot damage by fruit piercing pests and the kinds of these pests on yuzu (Citrus junos) fruit in Koheung, the most chief producing district of yuzu fruit in Korea, from ’97 to ’99. The extent of spot damage by fruit piercing pests on yuzu was increasing in recent years. This damage of fruits was severe in the lower canopy than the high one from ground and intercropping groves between yuzu trees had a greater damage to compare with single cropping of yuzu. Spot damage of yuzu fruit was occurred mainly from late September to early November when yuzu fruit is enlarging and coloring yellow. The blackish concave spot on yuzu fruit surface was appeared in 3 days after introduction of Riptortus clavatus into a netted cage containing one yuzu fruit and the diameters of this spot was 8.3 mm. At 10 days after introduction, this spot changed into milky-white with 9.2 mm diameters. One concave spot has contained oil cells by 17.7 and its external appearances has unchanged until harvest. The kinds of piercing pests of yuzu fruit were investigated with 3 orders, 16 families and 37 species. These pests were classified by 11 species of bugs, 5 species of hoppers and 21 species of moths. Among them, dominant species were Physopelta gutta, Halyamorpha halys, Empoasca vitis, Aedia leucomelas, Agrotis tokionis, etc. Macroglossum bombylans and Acherontia s쇼x are newly confirmed species as the fruit piercing moths in Korea.

진딧물류의 포식성 천적인 칠성풀잠자리붙이의 발육에 미치는 온도의 영향 및 계절적 발생소장을 조사하였다. 난부터 우화가지의 평균발육기간은 17, 22, 27, (75%RH, 16L:8D)에 서 각각 39.5, 32.0, 25.0, 19.8일로 온도가 증가할수록 발육기간이 단축되었다. 암컷의 수명은 위 조사 온도에서 각각 84.7, 79.6, 77.7, 69.8일이었고 산란수는 각각 973, 1085, 1637, 1735개로 고온일수록 수명은 짧았지만 산란수는 많아졌다. 또한 부화율은 84.1~95.9%이었고 우화율은 67.6~86.3%로 온도가 높을수록 높았으며, 성비는 대략 1:1이었다. 35, 55, 75%습도조건()에서 발육기간(난-우화)은 각각 26, 24, 22.9일 이었고 산란수는 1042.8, 1526.5, 1640개 였다. 칠성풀잠자 리붙이 성충은 에서 우화 5~6일 후부터 산란하기 시작하여 1일 평균 30~40개 정도 산란하며, 우화 후 22~28일 사이에 산란을 가장 많이 하였는데 이때에 1일 최고 산란수는 80~90개였다. 복숭아혹진딧물과 목화진딧물은 5월 하순~6월 중순에 발생 Peak를 보인 후 7~8월에는 밀도가 급격히 감소하다가 9월 상~중순경에 다시 증가하였다. 칠성풀잠자리붙이는 7월 중~하순에 1차 발생 Peak를 보였으며, 그 이후 밀도가 감소하다 9월 중~하순에 다시 2차 발생 Peak가 나타났다.