Common Darter Dragonfly (Sympetrum striiolatum) close-up of head and thorax from above, Oxfordshire, UK

sympetrum terrestrial animals horizontal anisoptera insects odonates ectotherms dragonfly developed country bugs arthropoda uk ectothermic europe red dragonfly arthropods head dragonflies pond nature united kingdom close up zoology developed countries water european ectotherm dragonflies fauna horizontals invertebrate wildlife lake cold darter entomology odonate striiolatum england insect british europe uk britain blooded libellulidae striolatum insecta thorax arthropod english oxfordshire insect invertebrates bug animal