First record of natural enemy, Trechnites aligharhensis on Trioza fletcheri minor Crawford, a major pest on Terminalia arjuna and Terminalia tomentosa
DOI:
https://doi.org/10.18311/jbc/2021/28583Keywords:
Galls, parasitisation, Tasar silkworm, Trechnites aligarhensis, Trioza flecheri minorAbstract
Studies have been carried out on exploration of natural enemies of the Psyllid bug, Trioza flecheri minor on Terminalia spp., the primary host plantations of tasar silkworm during April to November, 2020. The results of the studies indicated that among the natural enemies recorded on T. flecheri minor, the Trechnites aligarhensis Hayat, Alam and Agarwal was the major encyrtid parasitoid. The incidence of T. f. minor was significantly more on T. arjuna (22.98% galls) compared to T. tomentosa (12.59% galls) and peak incidence was observed during the August and September months. The parasitization of T. aligarhensis on T. f. minor was significantly more on T. arjuna (33.13%) as compared to T. tomentosa (24.92%).
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Accepted 2022-01-10
Published 2022-03-01
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