def parse_fasta_entry(text, known_species=None):
    """Split an entry of "Acession genus species etc" into fields.

    Returns a two-tuple of taxid (always zero), genus-species.

    >>> parse_fasta_entry('HQ013219 Phytophthora arenaria')
    (0, 'Phytophthora arenaria')

    >>> parse_fasta_entry('P13660 Phytophthora aff infestans')
    (0, 'Phytophthora aff infestans')
    """
    acc, sp = text.split(None, 1)
    taxid = 0
    return taxid, sp
