| Dytiscus World |  |
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| This is one of the site that are most famous and active relating to water beetles in Japan. Mr.Inoda who is the site-owner often gives me much valuable knowledge. | |
| STICHING ARTISKLAS |  |
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| This is a website of the mini-zoo which my dear Harald manages. They are breeding a lot of animals and also insects. | |
| Water Beetle Mania |  |
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| This website has also some video clips and quiz about water beetles. We will can study it more. From Delaware, America. | |
| BugGuide.Net |  |
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| This is the website introduces infomations about the various insects. I am mainly browsing the Image Boards of Family Dytiscidae in this. It is very important for the breeders who are interested in foreign Dytiscdae. | |