General data	Thematic references	Distribution references
Helodrilus oculatus

Algeria Omodeo et al., 2003 Denmark Blakemore, 2007 Qatar Al Yousuf, 1986 Russia Perel, 1979; Perel-Vsevolodova, 1997; Blakemore, 2007c Switzerland Glasstetter, 2012 Turkey Omodeo and Rota, 1989 United Kingdom Sims and Gerard, 1999

General data

Thematic references

Distribution references

Data are not exhaustive. The database is permanently a work in progress.