The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.
David - did you happen to keep a specimen? Protoptila does not have a spur on the forefemur, while Agapetus has two forefemur spurs. If you don't have a specimen, or a real good wing or dorsum of head photo, you probably cannot tell which genus it is. Agapetus artesus seems to be endemic to a couple large springs in Oregon and Phelps counties, MO and has been collected in September. Agapetus illini is widespread and a common early season emerger from small streams.
While Protoptila are usually found in larger, warmer streams, Protoptila tenebrosa has been reported from Bennett Spring, although collected in June.
Seasonal patterns of many taxa are often atypical in constant temperature springs with typically univoltine taxa occasionally being multivoltine.
have a great new year
Of necessity, entomologists converse in language littered with technical terms and scientific names. However, in as much as Creno may just ignore your gentle ribbing, I will attempt to provide you with (somewhat tongue-in-cheek) definitions to assist you in the understanding you profess to lack.
optical explanation in the mid 1900s fishing literature but I cannot remember where. Just another example of CRS (cannot remember s&*%).