How to Identify Insects Just By Looking at Their Mouths

iStock
iStock

Most of us learned how to tell arachnids and insects apart in elementary school, but classifying insects into their different orders based on looks alone is a little trickier. If you want to look at insects like an entomologist does, though, there’s one body part in particular you should focus on. According to a TED-Ed lesson by Anika Hazra, identifying the type of mouth an insect has can tell you a lot about what group it belongs to, what it eats, and how it evolved.

There are five main types of mouthparts insects can have, the most common of which is the chewing mouthpart. These mouths are characterized by large, serrated mandibles made for grinding up plants and prey. Believed to be the most primitive type of insect mouth still around today, you can see the chewing mouthpart on insects like ants and grasshoppers.

Other insect mouthparts include the pierce-sucking type, which is used by bedbugs and mosquitos to suck blood; the siphoning mouthpart, the curly, straw-like mouths that butterflies have; the sponging mouthpart, which helps flies sop up fluids; and the chewing-lapping mouthpart, which enables bees to build their hives as well as eat.

It’s important for scientists studying bugs to be able to recognize the diverse mouths of insects. It’s also a useful skill if you’re just a casual bug enthusiast. For illustrations of all the different mouthparts, check out the video from TED-Ed below.

[h/t TED-Ed]

Looking to Downsize? You Can Buy a 5-Room DIY Cabin on Amazon for Less Than $33,000

Five rooms of one's own.
Five rooms of one's own.
Allwood/Amazon

If you’ve already mastered DIY houses for birds and dogs, maybe it’s time you built one for yourself.

As Simplemost reports, there are a number of house kits that you can order on Amazon, and the Allwood Avalon Cabin Kit is one of the quaintest—and, at $32,990, most affordable—options. The 540-square-foot structure has enough space for a kitchen, a bathroom, a bedroom, and a sitting room—and there’s an additional 218-square-foot loft with the potential to be the coziest reading nook of all time.

You can opt for three larger rooms if you're willing to skip the kitchen and bathroom.Allwood/Amazon

The construction process might not be a great idea for someone who’s never picked up a hammer, but you don’t need an architectural degree to tackle it. Step-by-step instructions and all materials are included, so it’s a little like a high-level IKEA project. According to the Amazon listing, it takes two adults about a week to complete. Since the Nordic wood walls are reinforced with steel rods, the house can withstand winds up to 120 mph, and you can pay an extra $1000 to upgrade from double-glass windows and doors to triple-glass for added fortification.

Sadly, the cool ceiling lamp is not included.Allwood/Amazon

Though everything you need for the shell of the house comes in the kit, you will need to purchase whatever goes inside it: toilet, shower, sink, stove, insulation, and all other furnishings. You can also customize the blueprint to fit your own plans for the space; maybe, for example, you’re going to use the house as a small event venue, and you’d rather have two or three large, airy rooms and no kitchen or bedroom.

Intrigued? Find out more here.

[h/t Simplemost]

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The 10 Best Shark Movies of All Time, According to Rotten Tomatoes

MCA/Universal Home Video
MCA/Universal Home Video

If the ongoing popularity of shark films has taught us anything, it’s that we simply can’t spend enough screen time with these predators, who can famously ruin a beach day with one swift gnash of their teeth. And even if shark attacks are far less common than Hollywood would have us believe, it’s still entertaining to watch a great white stalk an unsuspecting fictional swimmer—or, in the case of 2013’s Sharknado, whirl through the air in a terrifying cyclone.

To celebrate Shark Week this week, Rotten Tomatoes has compiled a list of the best shark movies of all time, ranked by aggregated critics' score. Unsurprisingly topping the list is Steven Spielberg’s 1975 classic Jaws, which quite possibly ignited our societal fixation on great white sharks. The second-place finisher was 2012’s Kon-Tiki, based on the true story of Norwegian explorer Thor Heyerdahl’s harrowing voyage across the Pacific Ocean on a wooden raft in 1947.

If you did happen to write off Sharknado as too kitschy to be worth the watch, you might want to reconsider—it ranks sixth on the list, with a score of 78 percent, and its 2014 sequel sits in ninth place, with 61 percent. The list doesn’t only comprise dramatized shark attacks. In seventh place is Jean-Michel Cousteau’s 2005 documentary Sharks 3D, a fascinating foray into the real world of great whites, hammerheads, and more.

But for every critically acclaimed shark flick, there’s another that flopped spectacularly. After you’ve perused the highest-rated shark films below, check out the worst ones on Rotten Tomatoes’ full list here.

  1. Jaws (1975) // 98 percent
  1. Kon-Tiki (2012) // 81 percent
  1. The Reef (2010) // 80 percent
  1. Sharkwater (2007) // 79 percent
  1. The Shallows (2016) // 78 percent
  1. Sharknado (2013) // 78 percent
  1. Sharks 3D (2004) // 75 percent
  1. Open Water (2004) // 71 percent
  1. Sharknado 2: The Second One (2014) // 61 percent
  1. Jaws 2 (1978) // 60 percent

[h/t Rotten Tomatoes]