Was up on a ridge at a friend's place in Occidental, CA in October when this mayfly blew in the house and landed on the wall.
Am pretty sure it is a Callibaetis, but not sure of the exact species. Any thoughts?
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Was up on a ridge at a friend's place in Occidental, CA in October when this mayfly blew in the house and landed on the wall.
Am pretty sure it is a Callibaetis, but not sure of the exact species. Any thoughts?
You might be right......the adult usually has a completely modeled wing and the spinners have that modeling on the leading front edge?
Have you found some information online. You can try to search using Google Images search.
What size was it? #14, 16, 18 or 20?