Microdes melanocausta

{{short description|Species of moth}}

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| genus = Microdes

| species = melanocausta

| authority = Meyrick, 1891{{cite web |last=Yu |first=Dicky Sick Ki |url=http://www.taxapad.com/local.php?taxonidLC=82863461 |title=Microdes melanocausta Meyrick 1891 |website=Home of Ichneumonoidea |publisher=Taxapad |archive-url=https://web.archive.org/web/20160324231635/http://www.taxapad.com/local.php?taxonidLC=82863461 |archive-date=March 24, 2016}}

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Microdes melanocausta is a moth in the family Geometridae. It is found in Australia (including Tasmania, the type location).[https://archive.today/20130630210836/http://www.environment.gov.au/biodiversity/abrs/online-resources/fauna/afd/taxa/Microdes_melanocausta Australian Faunal Directory]