Spartaeus ellipticus is a species of jumping spiders found only in Taiwan.

The carapace is dark brown with paler markings towards the rear and a black margin.

The oval abdomen is greyish brown marked overall with small dark patches.

This species is most similar to Spartaea thailandica but is much smaller with diagnostic differences in the configuration of spines on the first pair of legs and in the genitalia.

This article related to jumping spiders (Salticidae) is a stub.