Scolytus

Classification

Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Coleoptera
Suborder: Polyphaga
Superfamily: Curculionoidea
Family: Curculionidae
Subfamily: Scolytinae
Tribe: Scolytini
Genus: Scolytus

Pronunciation

How to pronounce Scolytus: //ˈskɒl.ɪ.təs//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Scolytus aztecus by the Smithsonian. Used under a CC0 license.

Scolytus mundus by the Smithsonian. Used under a CC0 license.

Scolytus cristatus by the Smithsonian. Used under a CC0 license.

Scolytus excavatus by the Smithsonian. Used under a CC0 license.

Scolytus canellae by the Smithsonian. Used under a CC0 license.

Summary

Scolytus is a genus of bark beetles known for feeding on the phloem of trees, with several species that act as vectors for important tree pathogens, notably Dutch elm disease. The genus comprises many species, with significant implications for forestry and conservation.

Physical Characteristics

1.5–5.2 mm in length; varies by species.

Identification Tips

Look for beetles under the bark of trees, often identified by their smaller size and distinctive shape associated with bark beetles.

Habitat

Primarily found in forests where conifers and hardwoods are present.

Distribution

Most of the Northern Hemisphere, including the entire North America and South America.

Diet

Phloeophagous, feeding primarily on phloem of trees.

Life Cycle

Life cycle includes egg, larval, pupal, and adult stages, generally appearing in warmer months.

Reproduction

Bark beetles tend to reproduce in tunnels within the wood of trees, laying eggs in the phloem.

Predators

Various insectivorous birds and predatory beetles potentially prey on Scolytus larvae and adults.

Ecosystem Role

Plays a significant role in the decomposition and recycling of nutrients within forest ecosystems but can be detrimental to tree health.

Economic Impact

Several species, such as Scolytus multistriatus, are economically significant due to their role in spreading tree diseases like Dutch elm disease.

Collecting Methods

Using tree felling to access bark beetles
Trapping in pheromone baited traps

Preservation Methods

Freezing specimens for preservation
Dry preservation in exsiccators

Similar Taxa

Misconceptions

Often mistaken for other types of beetles; some species are incorrectly thought to only attack healthy trees.