[1] Charles Univ, Fac Sci, Dept Parasitol, Prague, Czech Republic
[2] Charles Univ, Fac Sci, Electron Microscopy Lab, Prague, Czech Republic
[3] Acad Sci Czech Republ, Inst Entomol, CR-37005 Ceske Budejovice, Czech Republic
[4] Acad Sci Czech Republ, Inst Parasitol, CR-37005 Ceske Budejovice, Czech Republic