Encyosaccus is a genus of South American orb-weaver spiders containing the single species, Encyosaccus sexmaculatus. It was first described by Eugène Simon in 1895,^[2] and has only been found in Colombia, Ecuador, Peru, and Brazil.^[1]

Encyosaccus sexmaculatus is dark orange, with a black tarsus (the last leg segment). The dorsal side of the abdomen is light orange spotted with black. A white border, a white line running on the anterior-posterior axis, and two lines running on the left-right axis, segment the orange area into six sections.^{[citation needed]}