Thielavia gigaspora, a new thermotolerant ascomycete from Egypt.

Thielavia gigaspora sp. nov. from herbivore dung is described and illustrated. The new taxon by comparison with previously known species is distinguished by relatively large ascospores (25-38 x 15-21 microm), each showing an apical, protuberant germ pore and a longitudinal dark band. A brief comparison with morphologically related species is given.