As summer arrives, you’re probably spending more time out in the garden, and it’s time to take a close look at your lawn. Thousands of pesky bugs called leatherjackets could be lurking beneath the surface of the grass, and they’re a pain to get rid of. What are leatherjackets?Leatherjeackets are the larvae of crane flies, better known as daddy longlegs. It’s what they look like before they turn into the big gangly insects. The critters are like tiny, brown or grey worms with a tough, leathery exterior, which is how they developed their name, gardening expert Fiona Jenkins explains. They live u…