Male?
Probably Rhomphaea (a Theridiid that used to be Argyrodes). These Theridiids scavenge from the webs of others spiders. This one is a relatively large spider, about 12mm in body length, and was found in the web of the orb weaver Cyrtophora exanthematica. The genus Rhomphaea was eerected by L. Koch in 1872.