The Chinese Hourglass Spider (Cyclocosmia latusicosta)

comically known as the Oreo Cookie spider, hourglass spiders are a genus of trapdoor spiders, all of which have very unusual flattened backsides. Enjoy your milk and cookies as you read more about this rare and unusual arachnid .

Close-up, spider border. Image source : Reditt Spiders in the Cyclocosmia genus are a type of trapdoor spider. These spiders are ambush predators that patiently wait for an unaware victim to scurry past their lair. They are cousins of tarantulas but are much smaller and less hairy. They are identified by their remarkable abdomens that look about otherwordly, even, deliciously companion. All members of the Cyclocosmia genus have similar-looking categoric abdomens but different species can be identified based on singular variations between them. They are hardened structures that are difficult to penetrate.

A variety of spider butt. Image source : ABCearth

development

It is thought that these spiders may have evolved these abdomens as a method of defense. related species have transitional forms of these abdomens. Some are partially truncated, just not to the extremes that we find with Cyclocosmia. It is feasible that, those spiders that happened to have more dense butt may have had a survival advantage against certain predators. With the direction of survival increasing in these families of spiders, development was free to tinker even more with the form and function of these spider ‘s butt.

Fun Fact: The abdomen of this spider was mistaken for an ancient chinese seal by a farmer. It has n’t gone unnoticed that the spider ‘s butt besides looks a piece like an Aztec sunlight stone, well, depending on who you ask.

behavior

As they are trapdoor spiders, they typically have a burrow with threads that cable the grate. Once they detect apparent motion, they pounce . Trapdoor spider hunting – double Source Reddit however, if threatened they will enter the burrow headfirst and back up plugging the hole with their abdomen ( see below ).

prototype reservoir : NickyBay This is typically seen when fending off ants or preventing other creatures from trying to enter its burrow. This method acting makes them highly difficult to find a well so they are considered a rare species because of it. In world, we just do n’t know the population of this genus very well.

Evolution Side Note: Evolution loves to recycle well ideas, so turtle ants have evolved a exchangeable method to block unwanted visitors ( see below ). A number of ant species and other arthropods conduct this like method acting to keep out intruders, it is called, Phragmosis . Soldier Turtle Ant blocking entrance. Image beginning : Imgur

habitat

Cyclocosmia prefer tropical and sub-tropical regions. They have representatives in Eastern United States, Mexico, Guatemala, Canada, and East and Southeast Asia. The latusicosta species is found most normally in China and Vietnam. They use loose territory, sandpaper, or moss to construct their burrows on a gradient, which can be between 7 and 15 curium trench. It is not known how spread these spiders are for certain as they are quite difficult to find, specially the males.

food for Thought

If you happen upon a randomly placed oreo cookie abandoned on the ground in a outside vietnamese forest embankment, it ‘s credibly not a cookie. : – )

Visit the video recording compilation below to watch how trapdoors catch their raven.

source : https://gauday.com
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