White-spotted Long-horned Caddisfly (Ceraclea albosticta)
The White-spotted Long-horned Caddisfly was described in 1861; the species was apparently quite widespread, thus it is strange that its name appears in listings of extinct species.
It is mentioned here for the sake of completeness until I will be able to get further information.
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edited: 01.11.2020
Tag Archives: Quebec
Procloeon caliginosum (McDunnough)
Rough-shod Small Minnow Mayfly (Procloeon caliginosum)
The Rough-shod Small Minnow Mayfly was described in 1925; the species has never been found since and is thought to be extinct.
However, the validity of this species seems to be somewhat doubtful.
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edited: 13.08.2022