Brown hairstreak butterfly (thecla betulae) resting on blade of grass, oxfordshire, uk

terrestrial horizontals invertebrate animals brown horizontal wildlife grass cold insects entomology wood insect betulae resting ectotherms british developed country bugs arthropoda england uk butterfly butterfly winged woodland thecla ectothermic europe uk britain lycaenidae blooded arthropods nature summer united kingdom insecta close up lepidoptera blade diurnal arthropod english zoology resting oxfordshire insect invertebrates developed countries hairstreak butterflies european butterflies ectotherm bug fauna antenna animal