12a (11b). Front wings relatively large and usually triangular; hind wings
small and usually
rounded, the
wings at rest held together above the body; wings usually with many veins
and cells;
antennae short, bristle-like, and inconspicuous; abdomen with 2-3 thread-like
caudal filaments (Fig.A); delicate, soft-bodied insects (Fig.B)
[mayflies]............Ephemeroptera
Please CLICK on pictures
to enlarge
A B
12b. Not as previously
described..................................................................................................…..….......
13