Citrus Leaf Miner (Indian Population)
Phyllocnistis citrella
📖 Description
Citrus Leaf Miner (CLM) is a major pest of citrus across the Indian subcontinent, particularly damaging to young trees and nursery seedlings. Adult female moths lay eggs on tender new flush leaves. Newly hatched larvae mine directly into the leaf tissue, creating characteristic serpentine (snake-like) silvery tunnels. Heavy infestation distorts and curls leaves, stunts growth, and creates entry points for citrus canker bacteria. Mature trees tolerate damage better than young trees, but outbreak years can affect yield and fruit quality. Management focuses on protecting new flush growth with systemic insecticides or biological control with the parasitoid Ageniaspis citricola. Pruning infested flush and avoiding excessive nitrogen that promotes continuous tender growth are key cultural practices.
⚠️ Symptoms to watch for
- Serpentine silvery mines on young leaves, distorted and curled leaves, stunted new growth, leaf drop in severe cases, susceptibility to citrus canker increases on mined leaves, yield loss in young plantations
🩹 Treatment
- Prune and destroy infested flush growth, spray neem oil 5ml/L with sticker, apply systemic insecticides at new flush emergence, conserve parasitoids (Citrus), install yellow sticky traps @ 10/ha
🌿 Organic treatments
- Prune and destroy infested young flush, apply neem oil 5 ml/L with sticker on new flush, apply Bacillus thuringiensis @ 2 g/L, release Ageniaspis citricola parasitoid, install yellow sticky traps @ 10/ha, intercrop with repellent plants
🧪 Chemical treatments
- Imidacloprid 17.8 SL @ 0.3 ml/L on new flush, Abamectin 1.9 EC @ 0.5 ml/L, Spinosad 45 SC @ 0.5 ml/L, Acephate 75 SP @ 1 g/L, Triazophos 40 EC @ 1.5 ml/L (apply at new flush emergence; rotate modes of action)
🛡️ Prevention
- Inspect orchards weekly during new flush, prune infested flush and destroy, avoid excessive nitrogen that promotes continuous flush, time irrigation to promote uniform flush emergence, conserve parasitoids (Ageniaspis), use yellow sticky traps for monitoring, protect young nursery plants with net house, avoid transporting infested nursery material
🪴 Affected plants
- All Citrus Species (Orange, Lemon, Lime, Sweet Lime, Grapefruit, Kinnow), Occasionally Other Rutaceae
🦋 Natural predators
- Ageniaspis citricola, Cirrospilus spp., Syrphid Larvae, Spiders, Predatory Bugs
🌱 Host plants
- Citrus sinensis, Citrus limon, Citrus aurantifolia, Citrus paradisi, Citrus reticulata
🔄 Lifecycle
- Female lays 30-60 eggs singly on tender leaves.
- Eggs hatch in 2-6 days.
- Larvae mine leaves for 5-10 days, passing through 4 instars.
- Pupation occurs inside the mine at the leaf margin, lasting 6-12 days.
- Adults live 5-15 days.
- Total life cycle 13-25 days; 10-15 overlapping generations per year in tropical conditions.
📅 Season
- Year-round, peaks during new flush periods (Mar-Jun and Sep-Nov)
🔎 Appearance
- Tiny silvery-white moths with black and orange markings on the wings.
- Larvae are tiny yellowish maggots that mine inside citrus leaves, creating serpentine (snake-like) tunnels visible as silvery trails on leaf surfaces.
💥 Damage level
- Moderate
🔁 Reproduction rate
- Rapid
🗺️ Geographic regions
- Indian Subcontinent
- Southeast Asia
- Worldwide Citrus-Growing Regions
Have an Insect to Identify?
Upload or take a photo of an insect on your plant and our AI will identify it and recommend treatments.
📷 Diagnose from Image