Hexorthodes nipana. This species was included in Polia Ochsenheimer in Franclemont and Todd (1983). It included tentatively in Hexorthodes McDunnough following the lead of Poole (1989) and earlier suggestions of affinities by McCabe (1980). It does not belong in Hexorthodes but no better placement could be found at this time. The synonymy of Hexorthodes nipana and of H. montara is from Mustelin (2006).
- Franclemont JG, Todd EL (1983) Noctuidae. pp. 120-159. In: Hodges et al. (1983).
- Poole RW (1989) Lepidopterorum Catalogus (New Series). Fascicle 118 Noctuidae, Parts 1-3. New York: E.J. Brill. xii + 1314 pp.
- McCabe TM (1980) A reclassification of the Polia complex for North America (Lepidoptera: Noctuidae). New York State Museum, Bulletin Number 432. vi + 141 pp.
- Mustelin T (2006) Taxonomy of southern California Erebidae and Noctuidae (Lepidoptera) with descriptions of twenty one new species. Zootaxa 1278: 1-47.