The Ailanthus webworm moth, (Atteva fabriciella), is a moth of the family Attevidae. It is found in China, India and Sri Lanka. It is considered as one of deadliest plant pest on Ailanthus species.
Females are nocturnal, remained concealed during the day. Small pale green eggs are laid either as single or small groups, usually on young buds and tender leaves. Incubation lasts from 2–3 days according to the season, and emerge 1st instar larva. There are five larval instars, where the larval period may be 13–20 days. Fifth matured larva constructs a loose cocoon and pupates. Color of the pupa changes from orange brown to pale yellow brown. The pupal stage completes after 4–14 days.
Ailanthus webworm is a major insect pest of Ailanthus excelsa causing large scale defoliation in nurseries and plantations. The growth of the tree is severely retarded due to repeated defoliation, and young plants are badly weakened and ultimately seed formation is drastically reduced owing to the damage caused to inflorescence. The pesticide ivermectin which extracted from a soil actinomycete, Streptomyces avermitilis is known to be effective against webworm caterpillars at very low concentrations.
- Sohn JC, Wu CS. "A taxonomic review of Attevidae (Lepidoptera: Yponomeutoidea) from China with descriptions of two new species and a revised identity of the Ailanthus webworm moth, Atteva fabriciella, from the Asian tropics". J Insect Sci. 13: 66. doi:10.1673/031.013.6601. PMC 3740914. PMID 23905539.
- Sen-Sarma, P. K. "Forest Entomology". Amazon.com. Retrieved 4 July 2016.
- Roychoudhury, N. & Joshi, K.C. "Toxicity of Ivermectin in Inducing Larval Mortality in Ailanthus Webworm, Atteva fabriciella Swederus (Lepidoptera: Yponomeutidae)" (PDF). World Journal of Zoology. Retrieved 4 July 2016.
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