A Photo Key to Large Aquatic Bugs

Whilst identification to species of many of the smaller aquatic bugs can be complicated, those described here are fairly straightforward. With a couple of exceptions all of these species are relatively large and are so distinctive in shape that identification to family is very easy. Many of these families only have one species living in the British Isles and those where there are more than one can be separated with the aid of only a hand lens.
Author(s): 
Adrian Chalkley
Free: 
Yes
Available as: 
PDF
Keywords: 
aquatic freshwater ponds rivers streams hemiptera heteroptera

Comments

What an excellent couple of guides from Adrian Chalkey. Looking forward to yet more - well done to all