How long is an arthropod?

Answer 1

The shortest arthropod described is the parasite Stygotantulus stocki found living on copepods; measuring less than 0.1 mm in length (0.004 in). The longest living arthropod known was a Japanese spider crab caught in 1921 which measured 3.8 m (12.5 ft) and weighed in around 41 pounds. (The largest lobster caught was over 1m long and slightly heavier at about 45 pounds).

On land the longest may be the coconut crab with arms spanning 1m (about 3 feet) and the shortest an arachnid, the mite Eriophyid, measuring only 0.125 mm.

Answer 2

There are well over one million species of arthropods on Earth. All insects, arachnids (Spiders), myriapods (centipedes, etc), and crustaceans (shrimp, lobsters, etc.) are arthropods. The smallest weigh less than 25 millionths of a gram and the most massive of all living arthropods, the American lobster, can weigh up to 20 kilograms (44 pounds). Some are so small that they cannot be seen without a microscope, although the Japanese spider crap has legs that span up to 5.5 meters (18 ft) from claw tip to claw tip.

Answer 3

lenght and weight from Stygotantulus stocki 94 µm to Japanese spider crab 3.8m 19kg