Observations on the death feigning, diurnal habits, (nocturnal) feeding behavior, and on the emergence position, carried out on 10 specimens, are briefly stated, and a timetable of the main emergence events is presented (departure from water: 00:12- 07:25, wings horizontal: 05:28-12:48). The total duration of the emergence period in aquaria (45 days) was nearly equal to that in nature (at least 46 days), but it occurred 3 weeks earlier.