Undulopsychopsis
... that the extinct lacewing Undulopsychopsis is the only psychopsid to have wavy wings?
... that the extinct <a class="mw-redirect" href="./Lacewing" id="mwDs4" rel="mw:WikiLink" title="Lacewing">lacewing</a> <i id="mwDs8"><b id="mwDtA"><a href="./Undulopsychopsis" id="mwDtE" rel="mw:WikiLink" title="Undulopsychopsis">Undulopsychopsis</a></b></i> <i id="mwDtI">(fossil pictured)</i> is the only <a href="./Psychopsidae" id="mwDtM" rel="mw:WikiLink" title="Psychopsidae">psychopsid</a> to have wavy wings?