- The
pterostigma (plural:
pterostigmata) is a
group of
specialized cells in the
outer wings of insects,
which are
often thickened or coloured, and thus...
- the hindwing.
Unlike the true dragonflies, the Odonata, they had no
pterostigmata, and had a
somewhat simpler pattern of
veins in the wings. Most specimens...
-
wings of
dragonflies are
generally clear,
apart from the dark
veins and
pterostigmata. In the
chasers (Libellulidae), however, many
genera have
areas of colour...
-
Wings of
Raphidia ophiopsis showing coloured pterostigmata...
-
stripe down the back. The
wings are
normally clear except for
brown pterostigmata at the
leading edges. It is 46–55
millimetres (1.8–2.2 in) in length...
-
lateral carinae of S3 to S7 are
usually marked with
black dashes, and the
pterostigmata are
short and
usually the same
colour as the
abdomen (red in mature...
-
broad pterostigmata which are dark with pale edges. Male Male Male head and
thorax Male
abdomen Male
abdomen Male wing
detail showing pterostigmata Female...
-
segment on the
thorax anterior to the mesothorax.
pterostigma (plural
pterostigmata) The
prominent cell,
usually opaque and coloured, near the tip of each...
- sponsa or L. dryas.
Immatures have pale
pterostigmata and only
develop the
characteristic two-coloured
pterostigmata when mature. The
flight period is from...
- S8 and S9 are
bright mauve-blue. The
wings are
clear with dull
brown pterostigmata,
which darken with age.
There are only two
other sprites with yellow...
