spinosa Tshernova & Belov 1982 [Cinygmula]  

[Tshernova O.A. & Belov V.V.] Чернова О.А. & Белов В.В. 1982. К систематике имаго палеарктических поденок рода Cinygmula (Ephemeroptera Heptageniidae). [Systematics of the imago of the Palearctic mayflies of the genus Cinygmula (Ephemeroptera Heptageniidae).] // Энтомологическое Обозрение [Entomologicheskoe Obozrenie = Revue d'Entomologie de l'URSS] 61(2): 278–296. PDF  

Entomological Review 61(2): 34–54. (English translation)

Клюге Н.Ю. 1995. Каталог типовых экземпляров коллекции Зоологического института РАН. Поденки (Ephemeroptera) [A catalogue of the type-specimens in the collection of the Zoological Institute, Russian Academy of Sciences. Insecta, Ephemeroptera]. // СПб, Зоологический институт РАН [St.Petersburg, Zoological Institute Rus. Acad. Sci.]: 1–52. PDF

Alcohol collection and slides in Canadian balsam. Holotype is permanently deposited in the Zoological Institute of Russian Academy of Sciences (in Saint-Petersburg, Russia); temporally can be deposited in the Department of Entomology of the Saint-Petersburg State University.

arbitrary signs