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Genus Hydrodroma Links

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Contributors » Mardon » Genus Hydrodroma

Genus Hydrodroma discovered by Mardon (#10081)

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Sighting Info

Observed: June 11, 2018 @ 12:00 PM
Posted on: June 11, 2018 @ 6:06 PM (diff: 0 days)
This Water Mite is probably a deutonymph rather than an adult. It was swimming in shallow water while being photographed. Could swim very fast. Part of its 'back' is above water in one photo. Ventral view is shown in one photo. Found with a dip net in the brook at Fogarty's Wetland. Before finding this, I never knew that aquatic arachnids existed.

Newfoundland Nature

Sighting's Features

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Newfoundland Nature

Sighting's Identification

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Newfoundland Nature

Newfoundland Nature

Comments by Site Members (scroll to post comment)

By Tclenche on 6/13/2018 12:36:29 PM

I have been photographing bright orange/red versions of this in a large pond over several years. Would there be a place to look up the various species of these creatures?

By Mardon on 6/13/2018 1:01:31 PM

There's a comprehensive list of Newfoundland's known water mite species listed in Chapter 14 of the NRCC publication "Assessment of Species Diversity in the Atlantic Maritime Ecozone". The relevant chapter is entitled, "Water mites (Acarina: Hydrachnidiae) of the Atlantic Maritime Ecozone". It begins on page 283. A portion of this publication is available on Google Books at:

By Tclenche on 6/13/2018 1:22:49 PM

Thank you for that information! I will look it up.

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