Emepror Dragonfly (Anax imperator) close-up of head and eyes of resting female, Oxfordshire, UK

terrestrial hawker emperor invertebrate animals wildlife cold female insects anax entomology odonate insect odonates resting ectotherms british dragonfly developed country bugs arthropoda england uk emepror pond ectothermic europe uk britain aquatic imperator blooded wetland emperor dragonfly arthropods head dragonflies nature united kingdom insecta aeshnidae vertical close up wetlands eyes arthropod english zoology odonata oxfordshire insect invertebrates developed countries ponds water european verticals ectotherm dragonflies europe bug fauna animal