ICZN Art. 45.6.4. subspecific rank if first published before 1961 and its author expressly used one of the terms "variety" or "form" (including use of the terms "var.", "forma", "v." and "f.")
additional sourceMayer, P. (1903). Die Caprellidae der Siboga-Expedition. <em>Siboga-Expeditie. Uitkomsten op zoologisch, botanisch, oceanographisch en geologisch gebied verzameld in Nederlandsch Oost-Indie 1899-1900 aan boord H.M. Siboga.</em> 34, 160 pp.; 10 pls., available online athttps://biodiversitylibrary.org/page/37095363[details]