Rod Williams / Bluebottle fly (Calliphora vomitoria) on ivy leaf, showing blue abdomen. Beverley Court Gardens, Lewisham, England, November
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Nick Upton / Common pond skater / Water strider (Gerris lacustris) on surface of garden pond with Bluebottle (Calliphora vomitoria) prey impaled on its rostrum, Wiltshire, UK. June.