Attacus caesar

{{Short description|Species of moth}}

{{Speciesbox

| image = Attacus caesar by OpenCage.jpg

| image_caption = At Exhibition of insects continent 2008, Osaka.

| taxon = Attacus caesar

| authority = Maassen, 1873

}}

Attacus caesar is a moth in the family Saturniidae. It is found in the southern Philippines.[http://www.wwb.co.uk/attacus-caesar-philippines-5-cocoons Attacus caesar South Philippines] wwb.co.uk It has the second largest documented wingspan of any moth in the world after the white witch moth, at {{convert|255|mm|in|abbr=on}}.{{Cite web|url=https://entnemdept.ifas.ufl.edu/walker/ufbir/chapters/chapter_32.shtml|title=Chapter 32: Largest Lepidopteran Wing Span | The University of Florida Book of Insect Records | Department of Entomology & Nematology | UF/IFAS|website=entnemdept.ifas.ufl.edu}}