A new Record and Severe Infestation of the Maladera modesta (Fairmaire, 1881) (Coleoptera: Scarabaeidae) on Medicinal, Aromatic and Ornamental Plants in Some Different Regions of Egypt

Document Type : Original Article

Authors

1 Plant Protection Research Institute (PPRI), Agriculture Research Center (ARC)

2 Faculty of Science, Al-Azhar University-Naser City- Cairo, Dokki 12618, Giza, Egypt.

Abstract

Maladera modesta (Coleoptera: Scarabaeidae)  infesting many plants and has become a serious pest since 2016 on citrus and strawberry crops, The adults feed on the leaves, buds and flowers of several plants The C-shaped larvae (white grubs) feed on roots The study was conducted as a part of a comprehensive baseline survey and population density of M. modesta infesting medicinal, aromatically and ornamental plants in a different region (Rawdat Al-Nil Park, Al-Firdaws Compound for the Armed Force, International Park and Nubaria) and studied the of  M. modesta at (Giza and Beheira) during two successive seasons. The results indicated that the twenty-four plants are more infected by M. modesta. The population density recorded that, the general weekly mean number of M. modesta was more abundant at Beheira Governorate than recoded at Giza Governorate throughout two successive seasons 2021 and 2022. The statistical analysis of the total mean number of M. modesta showed a significant difference at <0.0001 for two different locations. At Giza Governorate showed that the adults recorded its highest levels of infestation in the months (June, October, September, July, Augusta, May, April, November and March) However, the months of January, February and December, insect population was absent. At Beheira Governorate, showed that the adults recorded their highest levels of infestation in the months of (June, Augusta, July, September, April, May, October and March), and the months of January, February, November and December, insect population was absent.

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