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ISSN : 1225-0171(Print)
ISSN : 2287-545X(Online)
ISSN : 2287-545X(Online)
낙엽송잎벌( Pachynematus itoi Okutani) (Hymenoptera: Tenthredinidae)의 생태학적 연구
초록
Ecological Study of Pachynematus itoi Okutani (Hymenoptera: Tenthredinidae)
Abstract
Pachynematus itoi Okutani emerges three times a year, and overwinters as a pre-pupa in cocoon. First emergence of P. itoi was from 7th May to third June. Second and third emergence was from 20th June to 13th July and fourth to 25th August, respectively. Mean oviposited egg number was 59, and egg period was about 9 days. Hatching rate was ＞90%. Oviposited egg number was the highest in the first needle cluster of short shoot followed by second and third. P. itoi did not oviposit on single needle (long shoot) of Larix leptolepis (Sieb. et Zucc.). Larva had five instars, and larval period was about 20 days. Larva prefer needle cluster of short shoot to single needle of long shoot. Mature larva descended from host tree and pre-pupa in cocoon overwinter at topsoil.
Pachynematus itoi Okutani, Larix leptolepis Sieb. et Zucc., Biological characteristic, Emergence, Oviposition, 낙엽송잎벌, 낙엽송, 생물적 특성, 우화, 산란
Reference
Vol. 40 No. 4 (2022.12)
Frequency Quarterly
Doi Prefix 10.5656/KSAE
Year of Launching 1962
Publisher Korean Society of Applied Entomology
Online Submission
submission.entomology2.or.kr
KSAE
The Korean Society of Applied Entomology
