This muscular little spider is native to Tenerife. It may also be native to other Canary Islands
and even to elsewhere. My suspicion is that it is one of the Macronesian Macaroeris species of jumping spiders
(a genus name made up of macro for Macronesia and eris for jumping spider). In the genus there are 5 species native to the Canaries.
Above left and centre is a small-bodied, sharply-marked male, possibly doing his courtship dance.
Above right is a larger-bodied spider, but the male of nidicolens is dark and the female pale and less muscular.
Perhaps he has just eaten well (see another with hoverfly below).
Of the 5 Canarian species, 2 can be ruled out as pictures bear no resemblance to this. Of the remaining
3, M. diligens and M. nidicolens bear some likeness but don't seem quite right; both are, however, variable.
I can't find an image for M. litoralis.
One species is called moebi and I did want it to be that, as above centre he is "doing a Mobot", but that was also ruled out.
Above left and centre is thought to be the female M. nidicolens. She is much larger, paler,
less muscular and has an offwhite centre parting on her head and cream cheek marks and palps, making her look bearded.
Above right is Mr Muscle taking down a hoverfly nearly twice his size.