뽕나무깍지벌레는 장미과에 속하는 과수의 주요 해충이다. 뽕나무깍지벌레의 산란 및 부화특성과 복숭아 및 매실의 깍지벌레 방제용으로 등록된 살충제 10종(디노테퓨란 입상수화제, 벤퓨라카브 입상수화제. 피리플루퀴나존 입상수화제, 클로티아니딘 입상수용제, 뷰프로페진 수화제, 뷰프로페진+이미다클로프리드 액상수화제 , 뷰프로페진+에토펜프록스 입상수화제, 뷰프로페진+티아클로프리드 액상수화제, 벤퓨라카브+ 뷰프로페진 유제)의 살충제 감수성을 조사였다. 뽕나무깍지벌레의 1세대 부화시기와 부화율을 조사한 결과 5월 초에 가장 많이 발생해서 약 14일 정도 연속적으로 부화하였다. 부화율은 77.7% 였으며, 월동 암컷 성충 1개체의 평균 총 산란수는 58.7개, 평균 부화약충수는 45.7마리였다. 시험에 사용한 살충제 10종 모두에서 100%의 부화 약충 살충효과가 나타났으며 이는 약충 부화시기에 맞추어 약제를 살포하면 효과적으로 방제가 가능한 것을 시사한다.

To find best humidity condition for the use of Beauveria ARP14 against Grapholita molesta (Busck), first instar of G. molesta was treated with three conidial concentrations (1×107, 1×108, and 1×109 conidia/ml) in three different relative humidities (RH; 55, 75, and 95%). Mortality varied depending on concentration and humidity. Mortality in 95% RH was 1.5 and 2.7 times higher than 75 and 52% humidity at 1×109 conidia/ml and 16 hours after the exposure. However, the mycosis rates after 14 days were all not different among the treatments. In conclusion B. bassiana ARP14 could be most effective when applied higher at RH condition.

국내에서 다양한 작물에 지속적으로 피해를 주고 있는 미국선녀벌레는 나무 표피에서 알 상태로 월동하고, 부화한 약충은 이동하여 주로 초본 식물을 가해한다. 이번 연구에서는 미국선녀벌레 약충의 부화시기를 예측하기 위해 4지역(서울, 연천, 수원, 예산)에서 월동난이 있는 가지에서 부화하는 약충을 정기적으로 조사하여 부화 모델을 개발하였고, 각 조사 지역에 투명끈끈이트랩을 설치하여 떨어지는 약충의 수를 조사하여 그 경향을 분석하였다. 미국선녀벌레의 월동난 부화 모델은 약충의 부화시기를 잘 설명하였고(r2=0.98), 5월말에서 6월 초에 50%정도의 부화가 완료되는 것으로 확인되었다. 부화한 약충의 지표면으로의 이동은 부화 직후 1령 시기에 가장 활발한 것으로 나타났다. 이번 연구 결과들은 미국선녀벌레의 부화시기와 기주를 찾아 이동하는 시기를 바탕으로 한 방제 전략을 구축하는데 기여할 수 있을 것으로 생각된다.

The movement, survival, and weight gain of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) first instar larvae were studied on CB9, CB10 and SR05 cotton varieties under field conditions. The neonate H. armigera were released on the cotton varieties at the squaring stage of the plants and, after a period of 72 hours, the survival, weight gain, and final location of the larvae were observed. While the different cotton varieties had no effect on the survival and weight gain of the larvae, the release locations on the cotton varieties had a significant influence on the larval survival and weight gain. The larvae fed small squares of the cotton varieties were significantly heavier and showed a higher mortality than the larvae fed leaflets and mature leaves. For the cotton varieties in this study, the larvae released on leaflets showed a significantly higher rate of recovery compared to the larvae released on mature leaves and squares. This study also found that that the larvae on leaflets did not move up or downward unlike the larvae on mature leaves and squares. This information on the foraging behavior of larvae on cotton varieties will assist researchers to interpret field data and thereby help with the development of pest management decisions.

Among the Coleoptera, case bearing is found in four related subfamilies of the Chrysomelidae, the so-called Camptosomates: Clytrinae, Cryptocephalinae, Chlamisinae, and Lamprosomatinae (Böving and Craighead, 1931). Adults of casebearing chrysomelids feed on foliage of a variety of eudicots (Erber, 1988), but their larvae often show departures from strict phytophagy. Besides those with true herbivore larvae, that feed on green plant parts and complete development on the host plant, the larvae of most species live on the ground, in leaf litter, and feed on dry vegetable material and detritus (Erber, 1988; Brown and Funk, 2005). The larvae of some clytrine species live in ant nests (Erber, 1988; Brothers et al., 2000), but besides these mirmecophiles, many other clytrine larvae live in leaf litter and some few others on plants (Erber, 1988; Jolivet, 1988). The genus Smaragdina Chevrolat is distributed in the Paleoarctic region, and in the Oriental region (Chûjô & Kimoto, 1961; Erber & Medvedev, 1999; Gök, 2003; Maican, 2005, 2006). Forth-three Smaragdina species are distributed throughout northeast Asia, from Korea to Japan (Gressitt & Kimoto, 1961; Kimoto & Takizawa, 1994, 1997). In Korea a total of 5 species were known by Lee and An (2001). Recently, Smaragdina nipponensis Chûjô is newly recorded by Park et al. (2011). However, for the clytrine larvae has never been studied from Korea. The present study contains the description of the egg and first instar larva of S. nipponensis with notes on biology of adults and larvae, observes in natural conditions and in laboratory.