original description
Brady, H.B.; Parker, W.K.; Jones, T.R. (1870). A monograph of the genus Polymorphina. <em>Transactions of the Linnean Society of London.</em> 27[1871]: 197-253., available online at https://www.biodiversitylibrary.org/page/27409187
page(s): p. 231 pl. 11 fig. 15 [details]
From editor or global species database