7a (6a). Antennae long and conspicuous; abdomen
terminates in one long style (rarely 2); wings
with a single forked vein
(Fig.A); halteres (=
knobbed modified hind wings) present
and usually terminating in a hooklike bristle;
minute insects, usually <5 mm in length
[male scale insects]
................................................................................................…......Homoptera
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|
A |
7b. Antennae short, bristle-like, and inconspicuous;
abdomen with 2-3 thread-like caudal
filaments;
wings with numerous veins and cells; halteres absent; usually >5 mm in
length
(Fig. A) [mayflies]......................................................................................................Ephemeroptera
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|
A |
