Diarsia banksi is not a widely recognized or documented term in authoritative taxonomic references, scientific literature, or reputable encyclopedic sources. The name appears to follow the binomial nomenclature convention, suggesting it could refer to a species within the genus Diarsia, which belongs to the family Noctuidae (the owlet moths). The specific epithet banksi typically denotes a dedication to a person bearing the surname Banks, possibly a naturalist or collector, but no verifiable description, authority, or publication details for this taxon are currently available in accessible scientific databases.
Given the lack of confirmed information, any discussion of morphology, distribution, ecology, or taxonomic status would be speculative. Further research in specialized entomological catalogs or primary taxonomic literature would be required to determine whether Diarsia banksi has been formally described or is a synonym of another species. Until such verification is obtained, the term remains insufficiently documented for an encyclopedic entry.