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Longleaf wattle gall wasp

Longleaf wattle gall wasp

Trichilogaster acaciaelongifoliae

A species of Trichilogaster

Trichilogaster acaciaelongifoliae is a species of Australian chalcid wasps that parasitises, among others, Acacia longifolia (long-leaved wattle, or Sydney golden wattle), which has become an invasive pest in several countries. T. acaciaelongifoliae has been introduced into South Africa as a generally successful biological control agent of A. longifolia.

General Info About Longleaf wattle gall wasp
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Attributes of Longleaf wattle gall wasp
Adult Food Sources
Nectar from various flowers, acacia longifolia flowers, acacia pollen
Larva Food Source
Acacia longifolia phyllodes, plant tissues within the gall
Biting/stinging
Not reported
Allergy-causing
Not reported
Defensive attack
Not reported
Venomous
Not reported
Non-poisonous
Not reported
Borer
Not reported
Pollinator
Not reported
Pest-Eating Predatory
Not reported
Phytophagous
Not reported
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Life Cycle of Longleaf wattle gall wasp
Egg The egg phase for longleaf wattle gall wasp is the first stage after oviposition. The eggs are minute and often laid in proximity to suitable food sources. The embryonic development occurs within, transforming from a fertilized egg to a larva.
Larva In the larval phase, longleaf wattle gall wasp is worm-like with a voracious appetite. As it grows, it needs to molt several times, shedding its exoskeleton. The larva is usually larger than the egg, with significant size increases with each molt.
Pupal The pupal stage of longleaf wattle gall wasp is when it undergoes the most remarkable transformation. This immobile stage is when tissue breakdown and reorganization occur. The previously worm-like larva changes into the complex structures of the adult.
Adult Emerging from the pupa, the adult longleaf wattle gall wasp’s development is marked by the presence of wings and functional reproductive organs. The body is fully formed and hardened, and the adult is mobile, focusing on reproduction.
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Predators of Longleaf wattle gall wasp Larvae
Birds, predatory beetles, spiders
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Predators of Adult Longleaf wattle gall wasp
Birds, spiders, mantises, dragonflies, ants
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Scientific Classification of Longleaf wattle gall wasp
Tips for Finding Longleaf wattle gall wasp
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How Can You Attract Longleaf wattle gall wasp
People may use bait that mimics the scent of the longleaf wattle gall wasp's favorite plants or pheromones to attract them.
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Habitat Preferences of Longleaf wattle gall wasp Through Different Life Stages
For the longleaf wattle gall wasp, the egg stage is typically found inside the tissue of acacia plants, where the female lays her eggs. Larvae of longleaf wattle gall wasp usually inhabit galls on acacia, which they create by inducing the plant to form these structures as they feed and develop. The pupal stage continues within these galls, providing a secure environment. Adults emerge from the galls and are generally located on or near acacia plants, which they rely on for laying eggs and the cycle repeats. The search would focus on acacia trees, inspecting them for galls throughout and examining the surrounding area for adults, emphasizing the presence of galls which indicate larval and pupal presence.
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When is the Best Time to Observe Longleaf wattle gall wasp
The best time to find adult longleaf wattle gall wasp could be during the day when they are most active, while observing at dusk or dawn may be effective for certain life stages.
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What is the Best Weather to Observe Longleaf wattle gall wasp
Mild temperatures and dry conditions usually favor the searching of longleaf wattle gall wasp as extreme weather might inhibit its activity.
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How and Where Can You Find Longleaf wattle gall wasp at Different Life Stages
Egg Longleaf wattle gall wasp eggs are typically laid on the host plant. Carefully inspect the leaves and stems of known host plants to locate the tiny eggs.
Larva Longleaf wattle gall wasp larvae may be found on or near the host plants where they feed. Look for signs of feeding damage on the plant to spot them.
Pupal Longleaf wattle gall wasp pupae may be found in concealed locations near the larval food source. Search for pupae within curled leaves or other protective structures on the host plant.
Adult Longleaf wattle gall wasp adults can be found around the host plants, especially during the flowering period. Use non-harmful traps with synthetic pheromones or food baits to safely attract and observe adults.
Are Longleaf wattle gall wasp harmful?
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Beneficial Effects of Longleaf wattle gall wasp
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Biological Control Agent
Biological Control Agent
Use Status
Mature Widely Used
Protect Plant Types
Street trees, Ornamental plants, Hedges
Longleaf wattle gall wasp is a wasp used in the biological control of the invasive Acacia longifolia. It lays eggs in the plant's tissues, and the developing larvae disrupt the plant's growth. This agent provides an environmentally friendly control method, reducing reliance on chemical herbicides. However, its use requires careful monitoring to prevent non-target effects.
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