Australian wood mantis

The Australian wood mantis (Tenodera australasiae) is a member of the Mantodea order and the Mantidae family. While these insects are primarily known as predators that help control various arthropod populations, they can sometimes create imbalances within specialized agricultural environments by preying upon beneficial insect species, which is a concern for integrated pest management.

These mantises are typically found inhabiting ornamental trees and shrubs, as well as dense garden vegetation. They utilize these plants as hunting grounds, blending in with the foliage to ambush passing insects. While they do not consume plant tissue, their presence can affect the local population dynamics of pollinators and natural pest predators such as ladybirds and lacewings.

The life cycle of the Australian wood mantis follows incomplete metamorphosis. Females deposit eggs into an ootheca, a durable foam-like casing typically attached to twigs or branches. Nymphs emerge and undergo multiple molts, growing larger through several instars before reaching adulthood, which usually coincides with the height of the summer season.

The damage caused by these insects is indirect. By preying upon beneficial insects that manage primary plant pests, the mantis can inadvertently allow populations of aphids or mites to increase. In controlled agricultural environments like greenhouses, their presence might be detrimental if they consume insects introduced specifically for biological control purposes.

Effective management strategies focus on monitoring rather than eradication. Manual removal of oothecae during the dormant winter season can significantly reduce the population of emerging nymphs in the following spring. It is essential to balance their presence with the need to protect the beneficial insects that are critical for healthy plant development and crop yields.