Colin Purrington<p>Found this Houdini fly (Cacoxenus indagator) lurking around one of my bee hotels today. They are kleptoparasites of mason bees (Osmia spp.) and are not native to North America. They are the number one reason why nesting tubes in my area (Pennsylvania) should be cleaned during the winter. BE ON THE LOOKOUT FOR THEM. <a href="https://flipping.rocks/tags/BeeHotel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>BeeHotel</span></a> <a href="https://flipping.rocks/tags/InsectHotel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>InsectHotel</span></a> <a href="https://flipping.rocks/tags/MasonBees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MasonBees</span></a> <a href="https://flipping.rocks/tags/bee" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bee</span></a> <a href="https://flipping.rocks/tags/bees" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>bees</span></a> <a href="https://flipping.rocks/tags/flies" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>flies</span></a> <a href="https://flipping.rocks/tags/diptera" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>diptera</span></a> <a href="https://flipping.rocks/tags/inaturalist" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>inaturalist</span></a> <a href="https://flipping.rocks/tags/insects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>insects</span></a></p>