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Tuta absoluta

Practical biological control, IPM and environmental pest-management knowledge.

Tuta absoluta

Overview

Tuta absoluta is a highly destructive tomato leaf miner moth.

It is one of the most important protected tomato pests worldwide.

Damage may occur to: - leaves - stems - flowers - fruit


Adult tomato leafminer moth (Tuta absoluta)
Adult tomato leafminer moth (Tuta absoluta). The larvae of this invasive moth mine tomato leaves and can also damage stems, flowers and fruit. Photograph licensed under CC BY 3.0 US, via Wikimedia Commons.

Tomato damage caused by Tuta absoluta larvae
Tomato damage caused by Tuta absoluta. Larvae tunnel through leaves, stems and fruit, causing tissue collapse, feeding holes and loss of marketable yield. Photograph by Metin GULESCI, Leaf Tobacco, Bugwood.org, licensed under CC BY 3.0 US.

Identification

Typical signs: - leaf mines - stem galleries - fruit holes - black frass - collapsed leaf tissue

Adults are small grey-brown moths.


Conditions favouring Tuta

Condition Risk
Protected tomatoes Very High
Continuous cropping High
Poor hygiene High
Undetected hotspots High

Monitoring

Use: - pheromone traps - crop inspections - mine detection - fruit inspections

Inspect: - lower leaves - growing points - fruit clusters


IPM approach

Useful strategies: - early trapping - mine removal - hygiene - biological continuity - crop clean-down


Commonly affected crops


Key message

Tuta outbreaks escalate rapidly if mines and hotspots are not detected early.


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