Odiellus spinosus
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This is a quite distinctive species, once some experience is gained with Harvestmen. ID is relatively easy with the trident (a cluster of spines in front of the eyes) consisting of three large, almost flat spines of near equal length. Most Harvestmen have a trident of unequal spine lengths than Odiellus spinosus and in this species, the abdomen is distinctly flattened in appearence. Odiellus spinosus is often found in gardens and around houses, and some websites show this species to have a southern distribution, but as this is a less studied group of invertebrates, accurate UK distribution is hard to determine. This adult, was one of three found at an estate in Worksop in early November 2009 and October 2012.
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UK distribution of Odiellus spinosus
 

The UK distribution maps on eakringbirds.com are provided by the National Biodiversity Network (NBN Gateway) Each red square on the map indicates species present in 10km grid squares.

Updated September 2011

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