They’re back. Yes, those colorful but annoying insects known as spotted lanternflies are once again popping up in yards and gardens across New Jersey. Although they’re only in the early phase of their life cycle — the nymph stage — experts seem to agree it’s never too early to snuff out any spotted lanternflies, or egg masses, that you might see. Spotted lanternflies are invasive insects, feeding on the sap of their host plants, and leaving behind a sugary substance called honeydew that encourages fungal growth and new insects on the weakened plants. While they don’t pose any threat to people …