|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 2. Diagram of the upper (blue) and lower (red) beaks of O.
bimaculoides. Both beaks are U-shaped in cross section and the anterior
end is folded over itself to form the biting surfaces (i.e. the rostrum and
the jaw angles). The upper beak has enlarged lateral walls that fit within,
but do not contact the lower beak. The lower beak has enlarged wings and a
reduced hood relative to the upper beak.
|
