Little brown worms on top of rocks in pond

Tirral

New Member
Joined
17 Mar 2020
Messages
10
Location
Kent
Hello everyone,

Does anyone know what these little brown worms are. They are about 5-10mm long and are crawling on a rock that just protrudes out of the water so remains damp.

Thanks
6a79c65c19b36a14a310978f4156a354.jpg


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dw1305

Expert
Joined
7 Apr 2008
Messages
10,504
Location
nr Bath
Hi all,
They aren't the mosquito larvae as I know them. These just sit on the rocks still bearly moving unlike the larvae that squiggle across the water.
Yes, there are loads of "Midge" larvae that aren't the <"Mosquito larvae"> that we are familiar with.

Even people who survey freshwater invertebrates often lump the fly (Diptera) larvae into fairly broad categories, because they aren't easy to get a definitive ID on.

You get Biting midges (<"Ceratopogonidae>"), which have very small, "squiggly" larvae, Non-Biting Midges (<"Chironomidae">) the larvae of which are "Bloodworms", Glassworms (<"Chaoboridae">), Black-Flies (<"Simuliidae">) which attach to rocks in running water etc.

Have a look at <"Key to the larval stages of aquatic true flies (Diptera), ......">, it has a lot of drawings that might allow you to identify the right area.

cheers Darrel
 
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