Valérie Choumet at Paris's Institut Pasteur anaesthetized a mouse, stuck a microscope in a flap of its skin, and induced a mosquito to bite it. The result is the best footage yet of the weird, flexible, questing mouth of a mosquito, which can bend and twist and fork as it seeks out blood vessels.
From afar, a mosquito’s snout might look like a single tube, but it’s actually a complicated set of tools, encased in a sheath called the labium. You can’t see the labrum at all in the videos; it buckles when the insect bites, allowing the six mouthparts within to slide into the mouse’s skin.
Four of these—a pair of mandibles and a pair of maxillae—are thin filaments that help to pierce the skin. You can see them flaring out to the side in the video. The maxillae end in toothed blades, which grip flesh as they plunge into the host. The mosquito can then push against these to drive the other mouthparts deeper.
The large central needle in the video is actually two parallel tubes—the hypopharynx, which sends saliva down, and the labrum, which pumps blood back up. When a mosquito finds a host, these mouthparts probe around for a blood vessel. They often take several attempts, and a couple of minutes, to find one. And unexpectedly, around half of the ones that Choumet tested failed to do so. While they could all bite, it seemed that many suck at sucking.
Here’s What Happens Inside You When a Mosquito Bites – Phenomena: Not Exactly Rocket Science [Ed Yong/National Geographic]
The Ghost Minitaur is the latest iteration of terrifyingly cute agile legged robots. I for one welcome our doglike robot overlords.
The largest all-sky survey of celestial objects ever made by humans was released this month, using data from The European Space Agency (ESA)’s Gaia satellite.
We know that pigeons are capable of becoming crafty drug smugglers or connoisseurs of fine art, but now we know they can kind of tell when we’re making up words.
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Vaping is getting more mainstream by the day, which means there’s been an influx of quality yet affordable vaporizers on the market. We’re particularly excited about the APX Wax Vaporizer Kit, which is an easy-to-use, high-quality vape that works with both dry herbs and waxy concentrates.If you’re a beginner trying to get into vaping, the APX […]
When you’ve had a long day and it’s time to unwind, there’s a lot you can do to relax: drink some tea, take a shower or even read a book. But there’s one thing that’s essential to a comfortable night’s rest—and that’s investing in some really good sheets. Enter Bamboo Bed Sheets. These quality sheets retail for $120, but […]