Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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This is an interesting one. Following the keys in Merritt R.W., Cummins, K.W., and Berg, M.B. (2019) and Jacobus et al. (2014), it keys clearly to Ephemerella. Jacobus et al provide a key to species, but some of the characteristics are tricky to interpret without illustrations. If I didn't make any mistakes, this one keys to Ephemerella mucronata, which has not previously been reported any closer to here than Montana and Alberta. The main character seems to fit well: "Abdominal terga with prominent, paired, subparallel, spiculate ridges." Several illustrations or descriptions of this holarctic species from the US and Europe seem to match, including the body length, tarsal claws and denticles, labial palp, and gill shapes. These sources include including Richard Allen's original description of this species in North America under the now-defunct name E. moffatae in Allen RK (1977) and the figures in this description of the species in Italy.
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Baetis7 on Sep 3, 2014September 3rd, 2014, 10:15 am EDT
Can anyone tell me the technical name to the beard on the ventral side below thorax on caddis pupae? I tie a few patterns with this imitated beard but was always curious to know the technical name for this morphological part. Thank you!
Baetis7 on Sep 3, 2014September 3rd, 2014, 10:21 am EDT
Here is a pattern I came up with a few years back with beard. I call it a 'Pure Caddis'
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Creno on Sep 3, 2014September 3rd, 2014, 4:02 pm EDT
The technical name for the beard on a caddis imatation is probably "beard". But there are others I suspect will have their own names :-) That is a nice looking fly.
I imagine the beard is envisioned by fly tiers to represent the legs of the pupae.
I imagine the beard is envisioned by fly tiers to represent the legs of the pupae.
Entoman on Sep 3, 2014September 3rd, 2014, 10:08 pm EDT
"Beard hackle" or simply "beard" is a term in fly tying used to describe the method of hackling a nymph or wet fly where the hackle is mounted under the body only. Another term commonly used for this method is "throat hackle" or "throat", especially when referencing streamers. Used on caddis imitations the intention is to imitate the trailing legs as Creno suggested. Whether it succeeds at this is debatable, especially since a beard hackle without a substantial wing mounted on top will make a fly drift upside down. There is no use of the term in caddis morphology that I'm aware of.
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