Ichneumon Wasp

An orange Ichneumon wasp, probably a Netelia sp (Hymenoptera: Ichneumonidae).  These orange Ichneumons with large ocelli and long antenna tend to fly at night but this one was out in daylight.

Normally it would not be possible to identify the genus of an Ichneumon from such photos, but in this case the second photo clearly shows the areolet on the wing which is one of the marks of Tryphoninae genus Netelia as opposed to Ophioninae (see this page at the American Entomological Institute for more details).  This is a magnified, contrast enhanced section of the second photo:

Photos taken in the field below Chazey Wood, near Caversham, UK, on 2012-04-24.