original description
Angelov, A. (1972). Neue Hydrobiidae aus Höhlengewässern Bulgariens. <em>Archiv für Molluskenkunde.</em> 102 (1/3): 107-112. [details] Available for editors [request]
basis of record
Georgiev D. (2013) Catalogue of the stygobiotic and troglophilous freshwater snails (Gastropoda: Rissooidea: Hydrobiidae) of Bulgaria with descriptions of five new species. <i>Ruthenica</i> 23(1): 59-67. [Published online April 5, 2013] [details] Available for editors [request]
additional source
Georgiev D. (2013) Second record and new locality of the Bulgarian endemic species from an endemic genus <i>Insignia macrostoma</i> Angelov, 1972 (Gastropoda: Hydrobiidae) – more than 40 years after its description. <i> Malacologica Bohemoslovaca</i> 12: 60-61., available online at http://web.uni-plovdiv.bg/dilian/Georgiev_Insignia_macrostoma_new_loc.pdf [details]
From editor or global species database
Type locality Bulgaria, Teteven District, a cave near Polaten village [details]