Scientifically, this tiny arachnid goes by the name of Theridion grallator – but it takes little imagination to see how it got its more popular name: the happy-face spider.

Found only in rainforests in the Hawaiian islands, the spiders have a vast range of patterns and colours on their abdomens – yet all come from the same species.

The amazing diversity is due to genetic variations, although the patterns may also change depending on diet.

via Meet the Hawaiian spider that will make you smile

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