Word Origin and History for evolve Expand. v. 1640s, to unfold, open out, expand, from Latin evolvere to unroll, especially of books; figuratively to make clear, disclose; to produce, develop, from ex- out (see ex-) + volvere to roll (see volvox).
The largest of the ants, and the heaviest species of the order, are the females of Dorylus helvolus, reaching a length of 5 cm (2.0 in). The ant that averages the largest for the mean size of the whole colony is Dinoponera gigantea, averaging up to 3.3 cm (1 1â4 in). Another ant that is native to Australia, Myrmecia brevinoda, workers are reported to be 3.7 cm (1.5 in) on average and queens are more than 4 cm (1.6 in) in length.
Scientist Piotr Naskrecki was in a South American rainforest when he heard a noise from the undergrowth. Expecting it to be a rat, he was left astonished when he saw this monster. It turned out to be the South American Goliath Birdeater - the largest spider in the world. Incredibly, the spider has a leg span which can grow up to a foot - which is the size of a child's forearm. They can also weight more than 6 ounces and come complete with two-inch fangs full of venom.