The scarlet dragonfly (Crocothemis erythraea ) ...
A species in which males are scarlet but females aren't!
In fact, in this particular species - this is why nature is amazing - females are yellow, orange and sometimes... golden!
Like the one below...
Photo taken in the Alentejo region (Southern Portugal)
Crocothemis erythraea, female © David Germano | All rights reserved.
Camera: Canon PowerShot SX50 HS
Exif: 1/160s | ƒ/6.5 | ISO80 | 198 mm