Exechocentrus is a genus of Madagascan orb-weaver spiders (family Araneidae) first described by Eugène Simon in 1889.

[1][2] It is a bolas-using spider, capturing its prey with one or more sticky drops at the end of a single line of silk rather than in a web.

The two species are distinguished by features of the abdomen, so Simon's original type specimen cannot be assigned with certainty to either of them.

[3] A 2020 molecular phylogenetic analysis placed the genus in the informal group mastophorines of a broadly defined subfamily Cyrtarachninae s.l.

However, foraging behaviour was not observed until 2009, when an adult female Exechocentrus lancearius was seen to use a bolas with two droplets.