How do you tell the difference between sawfly larvae and moth/butterfly larvae.

From what I’ve read, one way to tell the difference between sawfly larvae and moth larvae is to count the legs. Sawfly larvae have 9 or more pairs of legs - 3 pairs of true legs at the front and 6 or more pairs of stumpy legs (called prolegs) at the back. Butterfly and moth caterpillars never have more than eight pairs of legs (3 pairs of true legs plus up to five pairs of prolegs).

To get a really decent photo of Jupiter showing the bands of the planet requires some specialist equipment including a decent telescope. However you can take a recognizable photo of Jupiter and its four main moons with much more modest equipment. With a basic SLR camera and a telephoto consumer zoom lens (e.g a 100-300mm zoom from Tamron or Sigma or your favorite camera manufacturer will do). I had a crack at it with a Samsung Schneider SA 50-200mm zoom lens (this is the same lens as the Pentax DA 50-200mm).