#RiverflySpotlight

Olives have small leaf-like gills and are probably the most pollution tolerant of the mayflies 💦

#Entomology #AquaticEcology #Freshwater #Baetidae #Olives #RiverflyPartnership

#RiverflySpotlight

A closer look reveals the intricate design of this caddisfly larva's case!

Have you seen any impressive cases in your Riverfly samples lately?

#RiverflyPartnership #InvertebratesOfInstagram #RiverSampling #Nature #Wildlife #Freshwater #Conservation #Rivers #Environment

#RiverflySpotlight

Stoneflies are very sensitive to pollution and thrive only in highly oxygenated, clean freshwater habitats.

Sometimes you will catch them doing press up motions in your tray, this means they are trying to oxygenate the water 💦

#RiverflySpotlight

Riverfly HQ found their first Blue-winged olive whilst out sampling Cunsey Beck!

The best way to differentiate Blue-winged olives and Olives is to look at their movement.

Olives dart around the tray quickly but Blue-winged olives have a rocking movement as shown in the video.

#RiverflySpotlight

A hooded case-maker found in Windermere under the microscope!

#Entomology #AquaticEcology #Freshwater #Trichoptera #Caddis #RiverflyPartnership

#RiverflySpotlight

True mayflies have tusk-like mouth parts and burrow in silt or sand 💦

#Entomology #AquaticEcology #Freshwater #Ephemeridae #Mayfly #RiverflyPartnership

#RiverflySpotlight

An adult mayfly came to visit the Riverfly team sampling at Force Beck last week 💦

#Entomology #AquaticEcology #Freshwater #Mayfly #RiverflyPartnership

#RiverflySpotlight

Caseless caddis have 3 pairs of legs visible and you can usually find them lashing around in the sample tray. 💦

#Entomology #AquaticEcology #Freshwater #Trichoptera #Caddis #RiverflyPartnership

#RiverflySpotlight

Wiggling our way into the weekend like this Cased caddis 🎉

#Entomology #AquaticEcology #Freshwater #Trichoptera #Casedcaddis #RiverflyPartnership

#RiverflySpotlight

Also known as 'agile darters', Olives (Baetidae) can be spotted by their quick movements around the tray 💦

However, Blue-winged olives move in a rocking horse motion. Let us know in the comments if you spot these in your samples? ⬇

#RiverflySpotlight

How many riverfly groups can you spot in this quick video? 🧐🦐

#RiverflyPartnership #RiverSampling #Nature #Wildlife #Freshwater #Conservation #Rivers #Environment

#RiverflySpotlight

The flat-bodied mayfly or stone-clinger. They have plate-like gills that are held out sideways & as their names suggest, a flattened body to help them cling to rocks.

Do you find many in your surveys? If so, tell us where you are based and share some photos!

#RiverflySpotlight

Freshwater shrimp are usually easy to spot, they are often found swimming on their side and zooming around the sample tray! 🦐

#Entomology #AquaticEcology #Freshwater #Shrimp #Gammarus

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The Riverfly HQ team headed out for their monthly sample today at Wilfin Beck in Near Sawrey. 💦

It was great to see some huge Stoneflies again happy in the high flowing water. Hardly fit on the spoon! 🙊

#Entomology #AquaticEcology #Freshwater #Plecoptera

#RiverflySpotlight

Craneflies are cylindrical with segmented soft body, the posterior end often has processes that look like tentacles 💦

#Entomology #AquaticEcology #Freshwater #Cranefly #RiverflyPartnership

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Cased caddis can carry cases made of stones, sand grains, plant material or shells 💦

#Entomology #AquaticEcology #Freshwater #Trichoptera #Caddis #RiverflyPartnership

#RiverflySpotlight

Caseless caddis have 3 pairs of legs visible and you can usually find them lashing around in the sample tray. 💦

#Entomology #AquaticEcology #Freshwater #Trichoptera #Caddis #RiverflyPartnership

#RiverflySpotlight

Olives have small leaf-like gills and are probably the most pollution tolerant of the mayflies 💦

#Entomology #AquaticEcology #Freshwater #Baetidae #Olives #RiverflyPartnership

#RiverflySpotlight

Look at the size of these guys! 🤩 the Riverfly HQ team found at Wilfin Beck, Windermere with permission from the
@nationaltrust.bsky.social

#Entomology #AquaticEcology #Freshwater #Plecoptera #Microscope