Eucrenonaspides oinotheke is a species of crustacean in the family Psammaspididae, endemic to Tasmania, the only species described in the genus Eucrenonaspides. Eucrenonaspides is in the order Anaspidacea. It was described from a spring at 9 Payton Place, Devonport, Tasmania in 1980, making it "the first spring-dwelling syncarid recorded from the Australian region". It is listed as a vulnerable species on the IUCN Red List. A further undescribed species is known from south-western Tasmania.

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