Cethegus robustus

{{Short description|Species of spider}}

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| genus = Cethegus

| species = robustus

| authority = Raven, 1984{{cite journal| last=Raven| first=RJ| year=1984| title=Systematics of the Australian curtain-web spiders (Ischnotheline: Dipluridae: Chelicerata) |journal=Australian Journal of Zoology Supplementary Series| pages=1–102 [50]|volume=93 |issue= |doi=10.1071/ajzs093 }}

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Cethegus robustus is a species of mygalomorph spider in the Euagridae family. It is endemic to Australia. It was described in 1984 by Australian arachnologist Robert Raven.{{cite web |url= https://biodiversity.org.au/afd/taxa/2da8160c-6753-448f-8578-d0c4cf6398d1|title=Species Cethegus robustus Raven, 1984|author= |date=2022-08-05|website= Australian Faunal Directory |publisher=Dept of Climate Change, Energy, the Environment and Water, Australia |access-date=2023-09-09}}