Stag beetles

Affected crops: They do not pose a threat to healthy, vigorous crops. Lucanidae larvae primarily consume decaying timber of deciduous trees. In orchard settings, they are only found in dead wood, rotting stumps, or severely weakened, dying fruit trees like apple, pear, or cherry, which have already begun to decay.

Biology and life cycle: The life cycle is long, often spanning several years (up to 5-6 years). The larval stage is spent entirely inside rotting wood, where they play a beneficial role in breaking down organic matter. Adults emerge for a very short period during the summer months specifically for mating and dispersal.

Nature of damage and economic importance: These beetles are not considered significant agricultural pests. They do not feed on live plant tissues, vascular systems, or productive fruit. Their presence does not cause the decline of a tree; rather, they are attracted to trees that are already dead or dying due to other diseases or environmental stress.

Protection measures: Because many species in this family are protected in various regions, extermination is generally unnecessary and illegal. Garden management should focus on maintaining tree health and removing hazardous rotting timber or stumps. Good agricultural practices, such as pruning dead branches, are sufficient to discourage them from inhabiting specific areas of your orchard.