Land speed record for rail vehicles. Determination of the fastest rail vehicle in the world varies depending on the definition of rail. The world record for manned passenger trains is held by the L0 Series, having achieved 603 km/h (375 mph) on a 42.8 km magnetic-levitation track in April 2015.
Confidence votes 4. Almost all insects have four wings, but the mosquito is one of only a few types of insects that actually only has two wings. Mosquitoes, Flies, Gnats and all the members of the hymenoptera or bee family only have two wings. However, there are two funny little knobs behind the first set of wings that are probably evolutionary remainders of what used to be a second set of wings.
For this reason, insect larvae often cause far more damage to stored crops and textiles than adult insects. Insect larvae generally have a thinner exoskeleton than the adult; many are white and soft. The characteristic fly larvae are maggots, often developing in decaying plant or animal material.Mosquito larvae are the familiar aquatic wrigglers; they breathe air and are killed by a thin film of oil on the water that prevents contact with air.or this reason, insect larvae often cause far more damage to stored crops and textiles than adult insects. Insect larvae generally have a thinner exoskeleton than the adult; many are white and soft. The characteristic fly larvae are maggots, often developing in decaying plant or animal material.