Australian plague locust
... that the Australian plague locust can form swarms infesting areas up to 50 square kilometres (19 sq mi)?
... that the <b id="mwD-k"><a href="./Australian_plague_locust" id="mwD-o" rel="mw:WikiLink" title="Australian plague locust">Australian plague locust</a></b> can form <a class="mw-redirect" href="./Swarm" id="mwD-s" rel="mw:WikiLink" title="Swarm">swarms</a> infesting areas up to <span about="#mwt19" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"50"},"2":{"wt":"km2"}},"i":0}}]}' id="mwD-w" typeof="mw:Transclusion">50 square kilometres (19</span><span about="#mwt19" typeof="mw:Entity"> </span><span about="#mwt19">sq</span><span about="#mwt19" typeof="mw:Entity"> </span><span about="#mwt19">mi)</span>?