Eumacronychia persolla Reinhard, 1965. ♂ from California, Imperial County, Algodones Dunes (NHMD). A Phallus and associated structures, lateral view B Epandrium, surstylus and cercus, lateral view C Phallus and associated structures, posterior view. Abbreviations: bp = basiphallus; cerc = cercus; dp = distiphallus; epand = epandrium; epiph = epiphallus; hypd apod = hypandrial apodeme; ph apod = phallapodeme; pogt = postgonite; prgt = pregonite; sur = surstylus. Scale bars: 0.5 mm.