Green Industry - A Knowledge Portal for Commercial Horticulture in Wisconsin (sponsored by University of Wisconsin-Extension)
Diagnostics - Problem Details
White-marked tussock moth - Orygia leucostigma
Description
Larvae are up to 31 mm long with a reddish orange head and a cream colored body with distinct whitish yellow tufted hairs on the front and hind ends. Adults are moths.
Damage
Young larvae skeletonize leaves and older larvae consume all but the mid-vein and the petiole of the leaf. These caterpillars only occasionally cause significant defoliation.
Cultural Controls
Destroy egg masses found on trunks.
Remarks
Treat immature larvae when Philadelphus is in bloom (500-600 GDD) in late May. Treat a second generation in mid to late summer when Solidago is in early bloom (1800-2100 GDD).
Chemical Controls
- Acephate
- Signal Word: Caution
Pesticide Class: Organophosphate - Bacillius thuringiensis
- Signal Word: Caution
Pesticide Class: Microbial - Bifenthrin
- Signal Word: Caution
Pesticide Class: Synthetic pyrethroid - Chlorantraniliprole
- Signal Word: Caution
Pesticide Class: Diamide - Cyfluthrin
- Signal Word: Caution
Pesticide Class: Synthetic pyrethroid - Diflubenzuron
- Signal Word: Caution
Pesticide Class: Insect growth regulator - Fluvalinate
- Signal Word: Warning
Pesticide Class: Synthetic pyrethroid - Imidacloprid+Clothianidin
- Signal Word: Caution
Pesticide Class: Neonicotinoid - Indoxacarb
- Signal Word: Caution
Pesticide Class: Oxadiazine - Lambda-Cyhalothrin
- Signal Word: Caution
Pesticide Class: Synthetic pyrethroid - Methoxyfenozide
- Signal Word: Caution
Pesticide Class: Insect growth regulator - Spinosad
- Signal Word: Caution
Pesticide Class: Microbial
Locations Affected
Plant Environment
Scouting Season:
April - Late , May - Early , May - Mid , May - Late , June - Early , June - Mid , June - Late , July - Early , July - Mid , July - Late , August - Early , August - Mid , August - Late , September - Early
Plants Affected
Photos
White-marked tussock moth caterpillar