blue butterfly insect Lepidoptera Lycaenidae norway rhopalocera spring wing abdomen antennae beautiful beauty common feeding female fragile natural nature summer wings Common Blue England english Great Britain Polyommatus icarus Surrey antenna display flower forewing fringe hindwing Italy little small small butterfly tiny trefoil veins animal butterfy Chalkhill Blue delicate Polyommatus coridon Sussex Celastrina holly blue Insecta leaf rest bright head metallic perch South Downs sunbathe animals arthropods butterflies copulation couple grasses insects Lofoten Islands male mating norwegian pair reproduction two copper Lycaena phlaeas orange spotted green haustellum proboscis scabious