Nedyus quadrimaculatus
This record describes Nedyus quadrimaculatus (species). Recorded family: Curculionidae. Recorded order: Coleoptera.
Identification and Appearance
Length about 3 mm. This small dark and very convex weevil may often be rocognised by the presence of two prominent patches of pale scales on the elytra although these may be absent and the extent of pale scaling in general varies. Nedyus quadrimaculatus is broadly similar to Parethelcus pollinarius and both are common on nettles. The white spots on the elytra of Nedyus are usually distinctive though early in the year they may be worn - fresh adults appear in mid summer. Parethelcus also has dark tibiae and a large tooth on the underside of the front femur. It also has a projection on the side of the pronotum. Unless identified by a recognised expert, good photos are required that show the key ID features. Also state the beetle's size in the comments box. Common in Wales, central and southern England, fewer records from elsewhere in Britain but probably under recorded there.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera
- Family
- Curculionidae
- Genus
- Nedyus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Found on Nettles.
Seasonal Activity
From early spring and into July.
Additional species information
Recorded status
Common in Wales, central and southern England, fewer records from elsewhere in Britain but probably under recorded there.
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Nedyus quadrimaculatus. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Nedyus quadrimaculatus (10)
Frequently Asked Questions About Nedyus quadrimaculatus
What is Nedyus quadrimaculatus?
Nedyus quadrimaculatus is a species in the family Curculionidae, within the order Coleoptera.
How big is Nedyus quadrimaculatus?
about 3 mm. This small dark and very convex weevil may often be rocognised by the presence of two prominent patches of pale scales on the elytra although these may be absent and the extent of pale scaling in general varies.
Where is Nedyus quadrimaculatus found?
Habitat: Found on Nettles.
When is Nedyus quadrimaculatus active?
Nedyus quadrimaculatus: seasonal activity - From early spring and into July..