|Group:||Group I (dsDNA)| Hytrosaviridae is a family of double
stranded DNA viruses that infect infect insects. The name is
derived from Hytrosa, sigla from the Greek Hypertrophia for
'hypertrophy' and 'sialoadenitis' for 'salivary gland
inﬂammation.' The viruses in this family are non occluded,
enveloped, rod-shaped virons measuring 500–1,000 nanometers (nm)
in length and 50–100 nm in diameter. The virons contain at least
35 polypeptides which range in size from 10 to 200 kiloDaltons.
The genome is a circular double stranded DNA molecule ranging in
size from 120 to 190 kilobases. The G+C ratio varies between 28%
and 44%. Species in this family cause overt salivary gland
hypertrophy symptoms in dipteran adults and partial to complete
sterility. Transmission is either horizontally (per os) through
feeding or vertically (transovarially) from mother to offspring.
Two species are known in this family: One other species has
tentatively been placed in this family: Host species  Prevalence
of this virus is high (80%