Acta Zoologica Academiae Scientiarum Hungaricae

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NEw AMPHISTOME TREMATODE) GENERA AND SPECIES

Acetabulum large, Venti Oterminal, with transverse tegumental rid ges on interior bottona sui face. Pharynx with externat diverticula. mouili terminat: e sophagus flender with smali bulb: cec a s horter than hody, hut reaching acetabulum. Testes rounded to ovat, not lobate: cirrus Sac absent: genital sucker present: genital pore bifurcal. Ovary subspherical, anterior or dorsal to acetabulum: vitelline follicles laterat. between O Vary and posterior testis: uterus intercecal: eggs large. In testinat parasites of Sotith American fres h water fis h. Type species: Da layiuS marengelleri DADAY. l 90J) FUKUI l 929. Dadayius DacuenSiS Sp. n.

RemarkS. DG layiuS PiacueriSiS Sp. n. is only about one-half the fige of thetype species. It has a mas Sive acetabulum and relative ly much larger pharynx and genital sucker than has D. miarerizelleri.

CONCLUSIONS

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REFERENCES

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INTRODUCTION

TranS-Saharan migrant passerines differ in lat deposition and nighistrategies to fas ely migrate to their Overwintering areaS. During StopOVer, bird s

joined this international research program me, which was staned to asses s thebreed ing areaS, migratory rotate dynamics and stopover sites of different migrat-ing populations of AcrocePhaluS warblers. This work is relevant to the researchos alternative evolutionary strategies of related species, as weli as to practical na-

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STUDY SITE AND METHODS

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DISCUSSION

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si Ze and fat deposit frona northeria areas ut the StopOVer Si te, as the nutum n migru-