Her gins close on a demoralised victim, incapable of or unready for defence.

She freezes the quarry with fear or amazement by suddenly assuming the attitude of a spectre.
The wings play an important part in this fantastic pose.

They are very wide, green on the outer edge, but colourless and transparent elsewhere.
Numerous nervures, spreading out fan-wise, cross them in the direction of their length.

Others, transversal but finer, cut the first at right angles, forming with them a multitude of meshes.

In the spectral attitude the wings are outspread and erected in two parallel planes which are almost in contact, like the wings of butterflies in repose.
Between the two the end of the abdomen rapidly curls and uncurls.