Processionary caterpillars feed on various Australian native plants. Table below is the list of known host plants.
| Scientific name | Common name |
| Acacia acuminata | Jam wattle |
| Acacia anceps | Port lincoln wattle |
| Acacia aneura | Mulga |
| Acacia aulacocarpa | Hickory wattle |
| Acacia cheelii | |
| Acacia chrysotricha | Newry golden wattle, Bellinger River wattle |
| Acacia concurrens | Black wattle, curracabah |
| Acacia decora | Western silver wattle , Showy wattle , Western golden wattle |
| Acacia fimbriata | Brisbane golden wattle, Brisbane wattle, fringed wattle |
| Acacia hamiltoniana | Hamilton’s Wattle |
| Acacia implexa | Lightwood, Hickory wattle , Screw-pod wattle, Lignum vitae, Fish wattle, Broad-leaf wattle |
| Acacia iteaphylla | Willow-leaved wattle, Flinders Range wattle |
| Acacia leiocalyx | Black wattle, Early black wattle, Early flowering black wattle, Lamb’s tail wattle, curracabah |
| Acacia linearifolia | Stringybark wattle, Narrow-leaved wattle |
| Acacia longifolia | Sydney wattle |
| Acacia maidenii | Maiden’s Wattle |
| Acacia omalophylla | Yarran |
| Acacia oswaldii | Umbrella wattle, miljee |
| Acacia pendula | Weeping Myall, True Myall, Boree, Nilyah, Balaar |
| Acacia prominens | Gosford wattle, Golden rain wattle, Grey sally |
| Acacia pycnantha | Golden wattle |
| Acacia rostellifera | Summer scented wattle |
| Acacia rubida | Red-stemmed wattle, Red leaved wattle, Red leaf wattle |
| Acer rubrum | Beefwood |
| Cassia nemophila | Desert cassia, Green feathery senna |
| Casuarina sp. | |
| Corymbia tessellaris | Carbeen, Moreton Bay Ash, Black Butt |
| Eucalyptus albens | White Box |
| Eucalyptus intermedia | Pink bloodwood |
| Eucalyptus terminalis | Tjuta, Joolta, Bloodwood, Desert bloodwood, Plains bloodwood, Northern bloodwood, Western bloodwood, Inland bloodwood |
| Grevillea striata | Beefwood |
| Persoonia cornifolia | Broad-leaved geebung |
| Pinus elliottii | Slash pine |
| Planchonia careya | Cocky Apple, Cockatoo apple, Billygoat plum |
| Senna artemisioides ssp. artemisioides | |
| Senna artemisioides ssp. Coriacea |