''Paroster arachnoides'' is water beetle in the Hydroporini tribe of the subfamily Hydroporinae in the Dytiscidae family. It was first described by Chris Watts and William Humphreys in 2004 as ''Nirripirti arachnoides''. It was transferred to the genus, ''
Paroster
''Paroster'' is a genus of beetles in the family Dytiscidae, containing the following species:
It is known only from the type locality in
Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...