process of elimination . . .
not Geometroidea (which have only one pair of abdominal prolegs)
unlikely to be an Erebidae (normally one or two pairs of abdominal prolegs reduced or vestigial, so appear to have two or three pairs of abdominal prolegs)
not Sphingidae, nor Bombycidae (no caudal horn)
no long setae (modified or otherwise), so unlikely to be Limacodidae, Saturniidae, Lasiocampidae, Acronictinae (Noctuidae)
no unusual abdominal modification(s), so unlikely to be Notodontidae.
Looks reasonably large, so likely to be "macrolepidoptera"
That leaves us with little choice - probably something in Noctuidae (other than Acronictinae)