Dragonflies and damselflies (Odonata) start their life as aquatic larvae or naiads, passing through a series of developmental stages or ‘stadia’, undergoing several moults as they grow. Before the final moult (emergence), metamorphosis occurs in which the larvae transform into the adult form. After emergence, adults undergo a pre-reproductive phase known as the maturation period, and this is when individuals normally develop their full adult colour (5). In C. hylas, larvae grow over two years. Adults of this species are mainly active from about 10:30am to 14:30pm from mid-May to mid-August, during which time they must mate (2) (6). Males don't seem to defend territories. Females lay eggs (oviposit) in plant tissue, using their ovipositor to cut a slit in the tissue into which they lay their eggs.