Petroleum fly
... that the Petroleum fly, Helaeomyia petrolei, is the only known insect that develops in naturally occurring crude oil?
... that the <b id="mwE-g"><a href="./Helaeomyia_petrolei" id="mwE-k" rel="mw:WikiLink" title="Helaeomyia petrolei">Petroleum fly</a></b>, <i id="mwE-o">Helaeomyia petrolei</i>, is the only known insect that develops in naturally occurring <a href="./Petroleum" id="mwE-s" rel="mw:WikiLink" title="Petroleum">crude oil</a>?