Main Species of Parasitic Natural Enemy Insects within Dendrolimus houi (Lajonquiere) in the Forest of Cryptomeria fortunei (Hooibrenk)

doi:10.16409/j.cnki.2095-039x.2017.06.018

Abstract

Abstract: Dendrolimus houi (Lajonquiere) is currently one of the most important caterpillars which infested needles of Cryptomeria fortunei (Hooibrenk) in South of China. Therefore, field investigation on parasitoid wasps and flies within D. houi is of great importance for suppression of caterpillars using their natural enemies and protection of C. fortunei forest stand where thousands of trees were killed by these caterpillars. Our results of investigation showed that there were 10 species of parasitoid wasps and flies within different stages of D. houi, they were Kriechbaumerella dendrolimi (Sheng et Zhong), Brachymeria lasus (Walker), Dibrachys yunnanensis (Yang), Theronia depressa (Gupta), Mesocomys breviscapis (Yao et Yang), Mesocomys trabalae (Yao et Yang), Carcelia illiberisi (Chao et Liang), Blepharipa zebina (Walker), Carcelia nigrantennata (Chao et Liang), Sarcorohdendorfia gracilior (Chen). Six species including D. yunnanensis, M. breviscapis, M. trabalae, T. depressa, C. nigrantennata and C. illiberisi were the new records in Fujian province, and it was the first report that they attacked catepillars of D. houi. Further investigation indicated that K. dendrolimi and M. breviscapis had higher parasitism rate (7.24% and 10.67%) and offsprings (33/pupa and 20/female). T. depressa had high offsprings (4/pupa), and can be combined with multiple parasitic wasps to supress population of D. houi. In addition, a brief description of phynotype was provided for the identification of above dominant species from the fields for better identification and application in the future.

Key words: Dendrolimus houi, Cryptomeria fortunei, parasitoid wasps, parasitic flies

CLC Number:

LIN Haoyu, FU Lieqing, LIN Jianhui, Hua Yin, Han Xiaohong, ZHENG Junxian, He Huan, Zhang Feiping, LIANG Guanghong. Main Species of Parasitic Natural Enemy Insects within Dendrolimus houi (Lajonquiere) in the Forest of Cryptomeria fortunei (Hooibrenk)[J]. journal1, 2017, 33(6): 842-848.

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