Gymnetron villosulum
This record describes Gymnetron villosulum (species). Recorded family: Curculionidae. Recorded order: Coleoptera.
Identification and Appearance
A small brown weevil 2-3mm, with long hairs on the pronotum and elytra. The larvae feed within galls formed in the seed-capsules of water speedwells, usually pink water-speedwell, Veronica catenata , but also Veronica anagallis-aquatica , Veronica beccabunga and V eronica scutellata. Other Gymnetron cause similar galls on water speedwells. For confirmation, rear the adult weevils from the galls. Unless identified by a recognised expert, good photos are required that show the key ID features. The sides of rivers, streams, ponds and other wet places where the host plants are likely to be present. Notable B. Widespread but local in southern England. Rare or absent elsewhere. Scarce or under-recorded. Most often recorded as the gall; few confirmed records of adult weevil.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera
- Family
- Curculionidae
- Genus
- Gymnetron
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
The sides of rivers, streams, ponds and other wet places where the host plants are likely to be present.
Additional species information
Recorded status
Notable B. Widespread but local in southern England. Rare or absent elsewhere.
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Gymnetron villosulum. 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.
