This is a Long-jawed Orb-weaver Spider Tetragnatha sp. stretched along one of the stalks of my iris which is growing in the garden pond. It apparently somehow knows that the iris is flowering and attracting airborn insects. No doubt, in due course, it will spin a web to attempt to catch them.
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May 2018, garden pond, rear garden, Staffordshire, England. © Pete Hillman Sigma 18-300mm.
Nature Journeys 
A long-jawed spider sounds more horrifying than it probably is. It looks long-bodied too, stretched out along the iris stalk.
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It is long-bodied as you say, Jill. I only ever see these around the pond, and rarely by my water butt.
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