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The adult citrus root weevil is somewhat variable in size but just over 1 cm (3 ⁄ 8 in) in length on average. Its elytra are glossy black with large stripes of tiny yellowish-orange scales, and its head and legs are black. It has adhesive pads on its legs which confer the ability to adhere to very smooth surfaces.
Pachnaeus opalus, the northern citrus root weevil, is a species of broad-nosed weevil in the family Curculionidae. [2] [1] [3] [4] It is found in North America. [1]
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These seven species belong to the genus Pachnaeus: [2] [3] [4]. Pachnaeus azurescens Gyllenhal, 1834; Pachnaeus citri Marshall, 1916; Pachnaeus costatus Perroud, 1853; Pachnaeus litus (Germar, 1824) (blue-green citrus root weevil)
Other weevils are used for biological control of invasive plants. A weevil's rostrum, or elongated snout, hosts chewing mouthparts instead of the piercing mouthparts that proboscis-possessing insects are known for. The mouthparts are often used to excavate tunnels into grains. [1] In more derived weevils, the rostrum has a groove in which the ...
English: Adult citrus root weevil, Diaprepes Source This image was released by the Agricultural Research Service , the research agency of the United States Department of Agriculture , with the ID K7456-1 (next) .