Arteriviridae

Arteriviridae is a family of viruses in the suborder "Arnidovirineae". Members of the family are known as arteriviruses.
Positive strand RNA virus, virions are enveloped, spherical, and 45–60 nm in diameter.
Taxonomy.
Family: Arteriviridae; subfamilies:
Prior to 2016, "Arterivirus" was the sole genus. The genus was dissolved in 2016, and the family was reorganized to have five genera: "Dipartevirus", 
"Equartevirus", "Nesartevirus", "Porartevirus", and "Simartevirus". The family was reorganized again in 2018, establishing the current subfamilies and lower taxa.