Black-collared click beetle

Systematic position: The black-collared click beetle (Ampedus nigricollis) belongs to the order Coleoptera and the family Elateridae. This beetle is naturally adapted to forest ecosystems, playing a specific role in the decomposition process of timber, though it can become a pest in managed plantations.

Affected plants: The pest primarily targets both deciduous and coniferous tree species. It is commonly associated with dead or decaying timber of pines, spruces, oaks, and birches, where it finds suitable conditions for larval development and maturation.

Biology and life cycle: The life cycle consists of egg, larval, pupal, and adult stages. Larvae (wireworms) live deep within decaying wood, where they undergo development for several years. Adults are typically active in warmer months and seek out new host trees to lay eggs, favoring sites already under stress.

Nature of damage and harmfulness: The larvae bore tunnels into the wood, which compromise the tree's internal structure. This activity weakens the tree significantly, making it susceptible to secondary pathogen attacks, such as wood-decay fungi, which can ultimately lead to tree mortality.

• Sanitary logging to remove infested trees.
• Proper disposal of deadwood from forest stands.
• Maintaining healthy forest environments to increase natural predator populations.
• Regular inspection of timber for entry holes.

Control measures: Management of Ampedus nigricollis focuses on silvicultural practices rather than chemical control. Removing infested timber prevents the buildup of large beetle populations. Ensuring good tree health through proper fertilization and thinning reduces the attractiveness of trees to these pests.