Styloxus fulleri is a species of beetle in the family Cerambycidae.

[1] The members of the Cerambycidae (Longhorn Beetles) family are named for their long antennae, sometimes exceedingly so.

[2] Longhorn beetle larvae are called round-headed borers and most feed on dead and decaying wood.

Adult longhorn beetles feed on flower nectar, sap, or leaves and bark.

While individuals of some species are almost always the same size, at times there can be rather pronounced variation, both within the same gender and also between males and females.