Triangular Spiders – Arkyidae

These small spiders come in a variety of bizarre geometric, spiky or lumpy shapes, including triangles. Their front legs have long spines on the inside edge used to ambush prey.  They don’t build webs, instead, they sit and wait for prey to venture within striking distance then rapidly lunge and grab it.  

Example Australian species

Forked Triangular Spider – Arkys furcatus

Triangular Spider – Arkys lancearius

Walckenaer’s Triangular Spider – Arkys walckenaeri