Dronen, N.O. and Blend, C.K. 2008. Observations on the Parorchis acanthus complex (Philophthalmidae: Parorchiinae) with the description of three new species of Parorchis Nicoll, 1907 and the replacement of the preoccupied junior homonym Paratrema Dronen & Badley, 1979 with Stenomesotrema nomen novum. Zootaxa. 1843, 1 (Aug. 2008), 1–23. DOI:https://doi.org/10.11646/zootaxa.1843.1.1.