ColeopteraCurculionidae

Phyllobius glaucus

This record describes Phyllobius glaucus (species). Recorded family: Curculionidae. Recorded order: Coleoptera.

Identification and Appearance

Phyllobius glaucus - Phyllobius glaucus

7.5 to 10 mm. A large weevil, similar to P. pomaceus but the femora are pale and its scales are pointed. Phyllobius is a genus of broad-nosed weevils that are commonly found on low herbage and in trees during spring and summer. Most are covered in metallic green scales that give them a very attractive appearance. There are 9 species and most look similar but they can be separated by carefully comparing the range of features shown in the table below, either under a binocular microscope or with a x20 hand-lens. Phyllobius weevils can be distinguished from the similar genus Polydrusus by looking where the antennae emerge from the rostrum. In Phyllobius the antennae emerge from the top whilst in Polydrusus they are positioned at the side. When looking directly down on the beetle it is usually clear to see. Unless identified by a recognised expert, photographic evidence is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used. Note the beetle's size and describe the identifying characters. It is advisable to retain the specimen in case further checks are needed. An arboreal species, favouring Alder but found on a wide range of trees. Late April to late June in the south and even later in the north. Although of local occurrence this species is widespread and may be common where found, there are records throughout England but the highest density is from across Wales.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Genus
Phyllobius

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Habitat

An arboreal species, favouring Alder but found on a wide range of trees.

Seasonal Activity

Late April to late June in the south and even later in the north.

Additional species information

Recorded status

Although of local occurrence this species is widespread and may be common where found, there are records throughout England but the highest density is from across Wales.

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Phyllobius glaucus. 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.

Explore Coleoptera families and species →

Frequently Asked Questions About Phyllobius glaucus

What is Phyllobius glaucus?

Phyllobius glaucus is a species in the family Curculionidae, within the order Coleoptera.

Where is Phyllobius glaucus found?

Habitat: An arboreal species, favouring Alder but found on a wide range of trees.

When is Phyllobius glaucus active?

Phyllobius glaucus: seasonal activity - Late April to late June in the south and even later in the north..