Cethegus lugubris

{{Short description|Species of spider}}

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| genus = Cethegus

| species = lugubris

| authority = Thorell, 1881{{cite journal| last=Thorell| first=T| year=1881| title=Ragni dell'Austro Malesia e del Capo York, conservati nel Museo Civico di Storia Naturale di Genova|journal=Annali del Museo Civico di Storia Naturale, Genova| pages=1–727 [241]|volume=17 |issue= |doi= }}

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Cethegus lugubris is a species of mygalomorph spider in the Euagridae family. It is endemic to Australia. It was described in 1881 by Swedish arachnologist Tamerlan Thorell.{{cite web |url= https://biodiversity.org.au/afd/taxa/ac52755b-4590-4f5b-8140-457094118010|title=Species Cethegus lugubris Thorell, 1881|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}}