Lapsias lorax is a species of lapsiine jumping spider from Ecuador.

L. lorax was discovered by Wayne Maddison in November 2010 in the Bellavista Cloud Forest Reserve of Ecuador, in a cloud forest at 2,000 metres (6,600 ft) of elevation.

It is the first species of the genus Lapsias to be discovered in western South America.

Its face has a big white band across it, and its jaws have diagonal yellow stripes.

From May to August 2011 the Beaty Biodiversity Museum in Vancouver, British Columbia, of which Maddison is the scientific director, held a contest to name the spider.