Common Darter Dragonfly (Sympetrum striolatum) resting on rock by water, Oxfordshire, UK

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