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Colonies of army ants are large compared to the colonies of other Formicidae. Colonies can have over 15 million workers and can transport 3000 prey (items) per hour during the raid period. [14] [20] When army ants forage, the trails that are formed can be over 20 m (66 ft) wide and over 100 m (330 ft) long. [20]
Sea spiders possess a tubular proboscis forward from the body trunk, at the end of which is the opening to the mouth. In those species that lack chelifores and palps, the proboscis is well developed and more mobile and flexible. In such cases, it can be equipped with sensory bristles and strong rasping ridges around the mouth.
Eventually, the army breaks up and the individual crabs travel up the shore, and dig themselves into the sand in a unique corkscrew motion. [4] The crabs dig down with the legs on one side of their bodies, while the legs on the other side walk backwards. [3] They then leave this burrow, and dig another.
The surviving marine species include the four species of xiphosurans (horseshoe crabs), and possibly the 1,300 species of pycnogonids (sea spiders), if the latter are indeed chelicerates. On the other hand, there are over 77,000 well-identified species of air-breathing chelicerates, and there may be about 500,000 unidentified species.
The chelicerae (/ k ə ˈ l ɪ s ər iː /) are the mouthparts of the subphylum Chelicerata, an arthropod group that includes arachnids, horseshoe crabs, and sea spiders. Commonly referred to as " jaws ", chelicerae may be shaped as either articulated fangs , or as a type of pincers .
“The sea robins on display completely spun my head around because they had the body of a fish, the wings of a bird, and multiple legs like a crab,” Kingsley said in an email.
Dorylus laevigatus is a member of the army ant genus Dorylus, or Old World army ants.More specifically known as "driver ants", the genus Dorylus is abundant throughout Africa and stretches into tropical Asia, where D. laevigatus is primarily found.
8. – Green ant vs. Paper wasp 7. – Tiger leeches vs.Freshwater crab 6. – Trap-jaw ant vs. Antlion 5. – Assassin bug vs. Ogre-faced spider 4. – Desert centipede vs. Desert trapdoor spider 3. – Giant rainforest mantis vs. Spiny leaf insect 2. – Green jumping spider vs. Long-jawed jumping spider 1. – Tree scorpion vs. Green ant
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