At the grassland site between Marokpapi and Hetefejercse similar surveys have been carried out in 1997 and 2001 (both with two visits in June and July). This allows in one example the examination of the consequences of the flood of the river Tisza in March 2001. The following table shows the species list of the two years.
 
 

Species	1997	2001
Lepidea sinapsis	x	2ex
Colias sp	x	x
Aporia crataegi	x
Pieris sp	x	x
Vanessa atalanta		x
Polygonum c-album		x
Argynnis paphia		1ex
Brentis daphne	x	1ex
Clossiana selene	x	>5ex
Melitaea phoebe		1ex
Melitaea diamina	x
Hypodryas maturna	x
Minois dryas		>5ex
Maniola jurtina	x	x
Coenonympha glycerion	x	x
Coenonympha pamphilus	x	x
Hamearis lucina		>5ex
Fixensia pruni	x
Lycaena dispar	x	4ex
Everes argiades		x
Maculinea telejus	x	>120ex
Plebejus argus	x	x
Polyommatus icarus	x	x

With exception of M. telejus, butterfly density was relatively low (see also situation of Gortyna borelii ), but it seems, that most species have survived the flood at least in small numbers. With Melitaea phoebe, Minois dryas and Hamearis lucina I observed even typical ground living species, which I did not see there during the visit in 1997. It is highly probable that the earlier species like Hypodryas maturna have been affected most seriously. This species is wintering gregariously as caterpillar in a silken web on the ground and has probably been very vulnerable during the time of the flood. Also in other formerly occupied places affected by the flood (Gulacs, Tarpa), I have not observed this species this spring (although this statement is not based on a systematic survey of this species).