Portal:Arthropods/Did you know/4

... that due to its long life cycle, the adult Great Arctic (pictured) is only seen every other year?
... that killer shrimp have invaded Western Europe and could soon invade North America?
... that Arthropleuridea is an extinct class of myriapods which includes, at over 2 metres long, the largest terrestrial arthropods that ever lived?
... that Euprenolepis procera is the first ant discovered that harvests and feeds on mushrooms?
... that before a population crash due to overfishing, the annual catch of Bering Sea tanner crab was as much as 332,000,000 pounds (151,000,000 kg)?
... that Centruroides limbatus and Centruroides bicolor are Central American bark scorpions belonging to the same species group?