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| | A selection of Ian's images of caddis | | |
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| | | | | |  |  | Caddis eaten leaves Fallen tree leaves that have been grazed by caddis larvae.
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Caddis gills Caddis larvae have a closed air-filled tracheal system. The air in the vessels make the gills appear silver under water (as shown in the photograph).
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Brachycentrus subnubilus eggs Females of <em>Brachycentrus subnubilus</em> climb down things like a stick rising above the water surface then lay their eggs. Because such sites ca...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Glyphotaelius wing The wings of caddis are covered in hairs, which gives the order its scientific name. The wing pattern in this species, however, is not influenced by ...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Psychomyia pusilla pupal shelters The final instar larva makes a shelter attached to a rock, in which it pupates. If this is detached from the rock, the ventral edge is seen as a thin...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Pupating Odontocerum This picture shows the caddis <em>Odontocerum albicorne</em> using an empty pupal case of another species (<em>Potamophylax</em>). This is a fairly ...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Adult Glossosomatid spurs The spurs on the legs are very important identification features for adult caddis at the family level. They have to be distinguished from strong hai...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Agapetus shelters Looking on the underside of a rock picked from a stream or river will often reveal a number of caddis. The meandering tubes of the chironomid <em>Rhe...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Adult Hydropsychid palps The maxillary palps are very important identification features for adult caddis at the family level. They have very flexible last segments in this f...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Brachycentrus subnubilus eggs Females of <em>Brachycentrus subnubilus</em> climb down things like a stick rising above the water surface then lay their eggs. Because such sites ca...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Agapetus fuscipes pupae <em>Agapetus fuscipes</em> is one of the commonest stream caddis. They have very small humped cases that are fixed in large numbers to stones and, in...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Athripsodes aterrimus Dorsal view of the front end of the larva that shows the dark bars at the posterior corner of the mesonotum , which is shown by larvae in the genera ...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Dried caddis cases Empty caddis cases can be dried and glued to card to make museum-style specimens. However the silk the larva uses to join the bits together is weak, ...
Graphic Image/Picture (eg. GIF-JPG) | | | | | | FBA Annual General Meeting opening Dr Ian Dunn, Sir Martin Holdgate, Professor Alan Hildrew and Dr Michael Dobson open up the 2007 FBA Annual General Meeting.
Graphic Image/Picture (eg. GIF-JPG) | | | | | | Map of the River Nile Basin
Graphic Image/Picture (eg. GIF-JPG) | | | |
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