Friday, May 4, 2012

Hoverfly Eat with Forked Tongue ....

When I looked closely at this photo of the hoverfly Rhingia campestris feeding on a primrose I noticed that ....

..... when it withdrew its tongue the tip of the proboscis sometimes split into two, and then closed up again. I've noticed this before in nectar-feeding insects like bee-flies and suspect that it may be the insect's way of clearing blockages that occur in the capillary tube formed by the proboscis.


  1. You discover the most interesting things!

  2. Hi toffeeapple, It's wonderful how digital photography reveals things that you would never notice when you take the picture.