https://www.bournbenthos.com/blog daily 0.75 2023-07-26 https://www.bournbenthos.com/blog/ephoron-leukon monthly 0.5 2023-07-26 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/e3915783-8d20-47fc-8fe7-1f2c74b8d266/Ephoron+leukon.jpg Bourn Benthos - Among the Instars: Ephoron leukon - Make it stand out Ephoron leukon is a species of burrowing mayfly in the family Polymitarcyidae. https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/b4ab9cef-5654-4c14-9c84-9f590681442b/Ephoron+Male.jpg Bourn Benthos - Among the Instars: Ephoron leukon - Make it stand out The large eyes on this Ephoron leukon confirm that it is a male specimen. https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/02cef749-b839-419c-a040-a51c2c05adb0/Ephoron+Tusks.jpg Bourn Benthos - Among the Instars: Ephoron leukon - Make it stand out The shape of the tusks and presence of dorsal tubercles help identify this specimen as Ephoron leukon. The long hairs around the head are used in filtering food particles from the water column. https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/816a5824-d343-4ef6-a653-f3d5fea76dfd/Ephoron+Ventral.jpg Bourn Benthos - Among the Instars: Ephoron leukon - Make it stand out Ventral view of Ephoron leukon, showing the color pattern and the dark colored tracheation in the gills. https://www.bournbenthos.com/blog/helicopsyche-borealis monthly 0.5 2022-10-05 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/eed020a0-a63d-47ce-94bf-01374437cad6/Helicopsyche+borealis.jpg Bourn Benthos - Among the Instars: Helicopsyche borealis - Make it stand out Helicopsyche borealis is a species of caddisfly in the family Helicopsychidae. https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1cdf0af8-82ba-4deb-85a8-1df283030e08/Helicopsyche+dorsal.jpg Bourn Benthos - Among the Instars: Helicopsyche borealis - Make it stand out The dorsal view of Helicopsyche borealis shows the spiral case structure. https://www.bournbenthos.com/blog/allocapnia monthly 0.5 2022-12-24 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371015075-TZ2B91M8V4KJA1QOW4DJ/Allocapnia.jpg Bourn Benthos - Among the Instars: Allocapnia Allocapnia, a small winter stonefly in the family Capniidae https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371015612-UDJZ76EUJJV294SCDY2A/Allocapnia-dorsal-focus-pts.jpg Bourn Benthos - Among the Instars: Allocapnia The blue box surrounds the hind windpads and the green box surrounds the front wingpads on this Allocapnia specimen. https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371015610-QQWNJ9KC36F32CR3MRF8/Allocapnia-mentum-focus-pts.jpg Bourn Benthos - Among the Instars: Allocapnia The blue arrows point out some of the identifying mouthparts for the family Capniidae. https://www.bournbenthos.com/blog/sialis-aequalis monthly 0.5 2022-12-24 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371018814-IK8YKLV7HR7FS8E8JNIV/Sialis-aequalis.jpg Bourn Benthos - Among the Instars: Sialis aequalis Sialis aequalis, an alderfly in the family Sialidae https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371019042-PPUKTY670FO4MOXYET88/Sialis-aequalis-focus-pts.jpg Bourn Benthos - Among the Instars: Sialis aequalis The blue highlights point out some of the identifying characteristics for Sialis aequalis. https://www.bournbenthos.com/blog/epitheca-princeps monthly 0.5 2022-12-24 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014985-UC4SLO7N67P58BF830I5/Epitheca.jpg Bourn Benthos - Among the Instars: Epitheca princeps Epitheca princeps. a dragonfly in the family Corduliidae https://www.bournbenthos.com/blog/perlesta monthly 0.5 2022-09-18 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014881-0WPEIX5L94AK8YZU09WB/Perlesta.jpg Bourn Benthos - Among the Instars: Perlesta Perlesta, a genus of the stonefly family Perlidae https://www.bournbenthos.com/blog/among-the-instars-nehalennia-irene monthly 0.5 2022-09-18 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371015184-HECSN1U4RIBNR0WS6C2J/Nehalennia-irene.jpg Bourn Benthos - Among the Instars: Nehalennia irene https://www.bournbenthos.com/blog/among-the-instars-phryganea monthly 0.5 2022-09-18 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014683-POOSXX01V1RW6J21U5ZF/Phryganea-final.jpg Bourn Benthos - Among the Instars: Phryganea Phryganea, a caddisfly in the family Phryganeidae https://www.bournbenthos.com/blog/welcome monthly 0.5 2022-12-24 https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014779-C6MA5SUZE822F3SDJ9M7/Baetid.jpg Bourn Benthos - Welcome to Among the Instars! https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014779-C6MA5SUZE822F3SDJ9M7/Baetid.jpg Bourn Benthos - Welcome to Among the Instars! 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mouthparts https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014985-UC4SLO7N67P58BF830I5/Epitheca.jpg Macroinvertebrate Photography Epitheca princeps emerald dragonfly nymph https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371014881-0WPEIX5L94AK8YZU09WB/Perlesta.jpg Macroinvertebrate Photography Perlesta stonefly nymph https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371015184-HECSN1U4RIBNR0WS6C2J/Nehalennia-irene.jpg Macroinvertebrate Photography Nehalennia irene damselfly nymph https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/1654371018814-IK8YKLV7HR7FS8E8JNIV/Sialis-aequalis.jpg Macroinvertebrate Photography Sialis aequalis alderfly larvae https://images.squarespace-cdn.com/content/v1/629b7dc04397451ea29fa730/eed020a0-a63d-47ce-94bf-01374437cad6/Helicopsyche+borealis.jpg Macroinvertebrate Photography Helicopsyche borealis caddisfly larva 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