Platycampus is a genus of sawflies belonging to the family Tenthredinidae, which is part of the order Hymenoptera. Sawflies are insects characterized by their broad waist (lacking the constricted petiole found in most wasps, bees, and ants) and the saw-like ovipositor of the females, used for cutting slits in plant tissue to lay eggs.
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Taxonomy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Hymenoptera
- Suborder: Symphyta (sawflies)
- Superfamily: Tenthredinoidea
- Family: Tenthredinidae
- Genus: Platycampus Brullé, 1846
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Description Species within the genus Platycampus are typically small to medium-sized sawflies. Like other sawflies, the adult insects are often dark-bodied, sometimes with lighter markings. The larvae are herbivorous, resembling caterpillars but distinguishable by having more than five pairs of prolegs (abdominal legs without crochets) and a single ocellus (simple eye) on each side of the head, compared to caterpillars which typically have five or fewer pairs of prolegs and usually six ocelli.
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Ecology and Host Plants Platycampus larvae are known to feed on the leaves of various trees and shrubs, particularly those in the genera Salix (willow) and Populus (poplar and aspen). Some species can occasionally reach high populations, leading to localized defoliation of their host plants.
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Distribution The genus Platycampus has a Holarctic distribution, meaning its species are found across the northern continents, including regions of North America, Europe, and Asia.
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Selected Species A well-known species within the genus is Platycampus luridiventris (Fallen, 1808), a common European species whose larvae feed primarily on willow.