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Mango Web Weaver

Scientific Name
Orthaga euadrusalis
Scientific Author
Walker, 1858
Exotic species - absent from Australia

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Diagnostic Images

Male fore & hind wings
Uwanodai, Kawabe Town, A. Sasaki 05.viii.1980 Japan
S. Anderson DAFF Biosecurity
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Diagnostic Images (11)
Diagnostic Notes
Identification is currently undergoing peer review as part of the National Diagnostic Protocols by SPHDS.

Symptoms of mango web weaver infestation include; a nest of leaves woven together by silk, completely defoliated leaves leaving mid rib, dried shrivelled shoots and an absence of flowering and fruiting (Singh 1988).

Egg period between 4-7 days

Larval period between 25-33 days; smooth and active; 5 instars; fully mature larva 25 mm long; 5 mm wide; pale grey with prominent white stripes on the dorsum.

Pupal period between 8-45 days; pupate in silken cocoon and hibernate in the soil at depths of 8 – 10 cm

Adult wing span 31mm; body length 14mm; males are smaller than females; forewings grey with patches of white scales; hindwings grey colour with less patches of white scales; nocturnal fliers (Singh 1988). Under laboratory conditions, the adult female can lay up to 155 eggs and survive between 3-5 days.

The genitalia of Orthaga euadrusalis have not been described. I include genitalic photographs of both sexes for additional diagnostic purposes have been provided.

Coming soon - PBT link with DNA barcoding
More Information
Specimen Contact
Daff Biosecurity Darwin
S. Anderson & L. Tran-Nguyen
23/02/2012 05:08 AEST
Last Updated
24/02/2012 19:21 AEST
S. Anderson & L. Tran-Nguyen (2012) Mango Web Weaver (Orthaga euadrusalis) Updated on 2/24/2012 7:21:54 PM Available online: PaDIL -
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Free for use under the Creative Commons Attribution 3.0 Australia License