— Abdomen with alternating pattern of
blue with black markings. Abdomen with
one clear blue segment (8) near the hind
end. Segment 9 blue with variable black
markings. ...................................... 18
18 Small species with variable black
marking on segment 2 as shown.
Segment 8 clear blue. Black marking at
rear end of segment 9 small.
Anal appendages as shown.
(Believed extinct in Britain.) Coenagrion scitulum
male
(Dainty Damselfly)
— Not as above ...................................... 19
19 Posterior margin of prothorax gently
curved. Blue thoracic stripes complete.
'U'-shaped mark on segment 2 of the
abdomen.
'w'-shaped mark covering half or less of
segment 9 of the abdomen.
Anal appendages as shown. Coenagrion puella
male
(Azure Damselfly)
120