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The reduction in leaf area on the damaged fronds results in a reduction of the number of nuts produced, and in newly planted palms the beetle can destroy the growing point of the palm resulting in its death. Mature palms may also die after extremely heavy attacks. [5] [3] [16] [17] Coconut palm in Hawaii, heavily damaged by Oryctes rhinoceros ...
Palmetto weevil grubs infesting a Bismarck palm. The palmetto weevil (Rhynchophorus cruentatus) is an insect native to Florida, but has been found as far as southern Texas to the west and South Carolina to the north. [1] [2] It is the largest weevil in North America and the only kind of palm weevil in the continental United States. [1]
The palm weevil Rhynchophorus ferrugineus is one of two species of snout beetle known as the red palm weevil, Asian palm weevil or sago palm weevil.The adult beetles are relatively large, ranging between 2 and 4 centimetres (1 and 1 + 1 ⁄ 2 inches) long, and are usually a rusty red colour—but many colour variants exist and have often been classified as different species (e.g., R. vulneratus).
Many caterpillars are nocturnal. For example, the "cutworms" (of the family Noctuidae) hide at the base of plants during the day and only feed at night. [27] Others, such as spongy moth (Lymantria dispar) larvae, change their activity patterns depending on density and larval stage, with more diurnal feeding in early instars and high densities. [28]
These minute insects, colloquially known as hoppers, are plant feeders that suck plant sap from grass, shrubs, or trees. Their hind legs are modified for jumping, and are covered with hairs that facilitate the spreading of a secretion over their bodies that acts as a water repellent and carrier of pheromones . [ 1 ]
Coccotrypes dactyliperda, the date stone beetle, palm seed borer, or button beetle, is an insect belonging to the subfamily bark beetles (Scolytinae). It originates from Africa and is spread around the world due to the trading and transportation route. The date stone beetle is known as the pest for the date palm.
Various insects attack dry food products, with flour beetles, the drugstore beetle, the sawtoothed grain beetle and the Indianmeal moth being found worldwide. The insects may be present in the warehouse or maybe introduced during shipping, in retail outlets, or in the home; they may enter packets through tiny cracks or may chew holes in the ...
The bark beetle, elm leaf beetle and the Asian longhorned beetle (Anoplophora glabripennis) [163] are among the species that attack elm trees. Bark beetles carry Dutch elm disease as they move from infected breeding sites to healthy trees. The disease has devastated elm trees across Europe and North America. [164]