1. 1 Gothenburg Natural History museum Box 7283, S-40235 Gothenburg Sweden
2. 2 Gothenburg Global Biodiversity Centre Box 461, S-40530 Gothenburg Sweden
3. 3 Koltzov Institute of Developmental Biology Vavilova str. 26 119334 Moscow Russia
4. 4 Zoological Museum of the Moscow State University Bolshaya Nikitskaya Str. 6 125009 Moscow Russia
5. 5 Aquatilis Nostravägen 11 S-417 43 Gothenburg Sweden
6. 6 E-mail: martynov@zmmu.msu.ru