Phytobia betulae
... that the fly Phytobia betulae is just 5 mm (0.2 in) long but the tunnel made by its larva inside a birch tree may reach 17 m (56 ft)?
... that the fly <i id="mwAa4"><b id="mwAa8"><a href="./Phytobia_betulae" id="mwAbA" rel="mw:WikiLink" title="Phytobia betulae">Phytobia betulae</a></b></i> is just <span about="#mwt33" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"5"},"2":{"wt":"mm"},"3":{"wt":"in"},"4":{"wt":"1"},"abbr":{"wt":"on"}},"i":0}}]}' id="mwAbE" typeof="mw:Transclusion">5</span><span about="#mwt33" typeof="mw:Entity"> </span><span about="#mwt33">mm (0.2</span><span about="#mwt33" typeof="mw:Entity"> </span><span about="#mwt33">in)</span> long but the tunnel made by its larva inside a birch tree may reach <span about="#mwt34" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"17"},"2":{"wt":"m"},"3":{"wt":"ft"},"4":{"wt":"0"},"abbr":{"wt":"on"}},"i":0}}]}' id="mwAbI" typeof="mw:Transclusion">17</span><span about="#mwt34" typeof="mw:Entity"> </span><span about="#mwt34">m (56</span><span about="#mwt34" typeof="mw:Entity"> </span><span about="#mwt34">ft)</span>?