Long-necked Ground Beetles

Pronunciation

How to pronounce Colliuris: /kɒˈljʊərɪs/

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

Images

Summary

Colliuris is a diverse genus of ground beetles characterized by their long necks. With over 90 species described, they are found mainly in the Western Hemisphere and contribute to ecosystem health through their role as predators.

Physical Characteristics

Long-bodied with a distinct elongated neck; typically dark in color with variations depending on species.

Identification Tips

Look for the long neck and characteristic body shape; they are primarily identified by their elongated appearance compared to other ground beetles.

Habitat

Primarily found in a variety of terrains including forests, grasslands, and near water bodies; they prefer areas with suitable soil for burrowing.

Distribution

Widespread in the Western Hemisphere; notable species found across the US, particularly in the Atlantic and Gulf coast regions, as well as parts of Arizona, Texas, and Florida.

Diet

Carnivorous; primarily preying on other insects and small invertebrates.

Life Cycle

Undergo complete metamorphosis with egg, larval, pupal, and adult stages; development can vary by species and environment.

Reproduction

Mating occurs in the summer, followed by females laying eggs in the soil or in leaf litter.

Predators

Birds, mammals, and other larger insects that prey on beetles.

Ecosystem Role

Important predators in the soil and leaf litter, helping to control pest populations and contribute to soil health.

Collecting Methods

• Hand collecting
• Pitfall traps
• Sweep netting

Preservation Methods

• Ethanol preservation
• Drying and mounting on pins

Similar Taxa

• Harpalus
• Agonum
• Loricera

Misconceptions

Often mistaken for other ground beetles without recognition of their distinctive long neck feature.

Tags

• Ground Beetles
• Colliuris
• Carabidae
• Insects