Rhône list

General index

Short-tailed Blue

(Everes argiades)

 

07/05/09 Rhône (69)

Male 14/04/09 Rhône (69)

30/07/10 Rhône (69)

Male 23/07/14 Rhône (69)

Male 21/08/08 Rhône (69)

Male 23/07/14 Rhône (69)

Female 29/04/15 Rhône (69)

Female 19/08/08 Rhône (69)

Female 21/06/11 Rhône (69)

Female 21/06/11 Rhône (69)

Female 27/08/07 Rhône (69)

Female 18/06/12 Rhône (69)

Female 18/06/12 Rhône (69)

Light green egg (upper left) well disguised on the developing flower head of red clover (Trifolium pratense)

The Short-tailed Blue is reputedly quite a widespread species with a certain migratory tendancy. However, it is also reported as local and relatively low density so it seems opportunities to observe it should be cherished. When trying to identify this species much attention is paid to confirming the presence of two orange blobs under the hindwing near the tails. However, the minute size of the butterfly added to the fact that the markings may be pale or fading with age can complicate matters and add to confusion with E.alcetas. Fresh examples of argiades have long, well developed tails and in the marginal/submarginal area behind the tails there are usually four well marked black spots with an orange blob between each pair. Alcetas usually has shorter tails and sometimes they are so vestigial that they are not detectable from the upperside. There is only one pair of obvious black spots at the margin and no orange. Even a developed tail on alcetas is often rather 'thick and stubby' whereas argiades tail is more 'long and wispy'. The upperside of female alcetas is always dark brown/black whereas argiades may show blue scales and black spots on the hindwing.

Rhône list

General index