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Biological Characteristics of Endasys liaoningensi (Hymenoptera: Ichneumonidae), as a Parasitoid of Pachynematus itoi (Hymenoptera: Tenthredinidae)

낙엽송잎벌 천적인 낙엽송잎벌살이뾰족맵시벌의 생물학적 특성

  • Published : 2009.12.30

Abstract

We surveyed natural enemies of Pachynematus itoi Okutani, newly recorded sawfly pest of Larix leptolepis, and investigated their occurrence and life cycle at Cheolwon and Taebaek, Gangwon Province in 2006~2007. Endasys liaoningensis was identified as main natural enemy of P. itoi Okutani. Parasitism of E. liaoningensiswas was 42%. Emergence period of E. liaoningensis was from May to September, and the peak of emergence was from 21th May to 20th June. It was suggested that the occurrence number and period of E. liaoningensis were quite closely relative to those of host, P. itoi.

낙엽송의 새로운 해충인 낙엽송잎벌의 천적 종류, 발생량 및 생활사를 강원도 철원과 태백에서 2006년부터 2007년까지 2년간 조사하였다. 주요 천적으로는 낙엽송잎벌살이뾰족맵시벌로 동정되었다. 낙엽송잎벌살이뾰족맵시벌의 1화기 낙엽송잎벌에의 기생률은 우화상 조사에서 42%로 높은 기생률을 보였다. 출현 시기는 5월부터 9월 사이였으며, 최성기는 5월 21일부터 6월 20일 사이였다. 낙엽송잎벌살이뾰족맵시벌의 발생 수와 시기는 기주인 낙엽송잎벌과 매우 밀접한 관계가 있었다.

Keywords

References

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