Survey of mealybugs and their natural enemies at Qena Governorate, Egypt

Document Type : Original Article

Authors

1 Plant Protection Department, Faculty of Agriculture, South Valley University, 83523 Qena, Egypt.

2 Plant Protection Research Institute, Agriculture Research Center, 12619 Giza, Egypt.

Abstract

A survey of mealybugs and their associated natural enemies was carried out in different regions at Qena governorate during the two years 2022-2023. Four pseudococcid species; Phenacoccus solenopsis Tinsley, Ferrisia virgate (Ckll.), Maconellicoccus hirsutus (Green), Planococcus citri (Risso) and one monophlebid species, Icerya purchase Maskell were recorded. The primary parasitoid, Aenasius arizonensis (Giraut) and the hyperparasitoid, Prochiloneurus aegyptiacus (Mercet) (Encyrtidae) were recorded as associated with P. Solenopsis. The two encyrtid primary parasitoids; Blepyrus insularis (Cameron), Acerophagus sp., and and the signiphorid hyperparasitoid, Chartocerus subaenus (Forster) were secured from F. virgate. On the other hand, no parasitoids were recorded associated with the two mealybug species; Maconellicoccus hirsutus (Green) and Planococcus citri (Risso). The three coccinellid predators, Hyperaspis vinciguerrae, Scymnus syriacus and Nephus hiekei were recorded as associated with P. Solenopsis, while the five predators; Hyperaspis vinciguerrae, Scymnus syriacus and Nephus hiekei (Coccinellidae), Sympherobius amicus (Hemerobiidae) and Dicrodiplosis manihoti (Cecidomyiidae) were recorded as associated with F. virgate. On the other hand, one coccinellid predator, Scymnus syriacus was recorded as associated with Maconellicoccus hirsutus while the coccinellid predator, Nephus hiekei was recorded as associated with Planococcus citri.

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SVU-International Journal of Agricultural Sciences
Volume 6, Issue 2
April 2024
Pages 163-168

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