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.
|Option 1||Option 2|
|Anal claws each with 6 or fewer conspicuous teeth along ventral, concave margin (sf 19.387, 19.388)||Anal claws without ventral teeth (sf 19.389, 19.390, 19.392, 19.393) or each with 10 or more tiny spines (sf 19.391) along ventral, concave margin|
|Silken retreat forming rectangular tent over depression in wood or rock, open at two ends|
|Remaining genera: Nyctiophylax and Polyplectropus||Remaining genera: Cernotina, Cyrnellus, Holocentropus, Neureclipsis, Plectrocnemia, and Polycentropus|
2 Example Specimens
This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.
|Go to Couplet 2||Go to Couplet 3|