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The genus Crustavirus includes three species. Wenzhou crustavirus is the type species. The exemplar isolate of the type species, Wēnzhōu crab virus 1 (WzCV-1) was first described during a landmark next-generation sequencing study in China. The virus was found in Asian paddle crabs (Charybdis japonica A. Milne-Edwards, 1861) yellowish brown crabs (Charybdis lucifera Fabricius, 1798) and stalked barnacles (Capitulum mitella Foster, 1980) (Li et al., 2015).
Non-segmented, negative-sense RNA.
Known crustavirus genome sequences encode at least three proteins, a putative nucleocapsid protein, glycoprotein and RNA-directed RNA polymerase identified on the basis of sequence similarity and structural properties shared with mononegavirus homologues.
Crustaviruses have negative-sense RNA genomes of 7.5–9.7 kb (Shi et al., 2016, Li et al., 2015). There is no data on virus replication.
Crustavirus genome sequences were isolated from crabs and barnacles.
Crustavirus: from Crustacea and virus, the suffix for a genus.
Due to the small number of genus members, no firm species demarcation criteria have been established beyond phylogeny and the hosts the viruses infect.
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