Maybe Smicroplectrus, same tribus as Eridolius (Exenterini)
This one look very much like Smicroplectrus jucundus in Boldsystems:http://www.boldsystems.org/index.php/Ta ... searchTax=
As far as I know is the best key for Smicroplectrus (and other Exenterini/Cteniscini) still:
Kerrich, G.J. 1952. A review, and a revision in greater part, of the Cteniscini of the Old World (Hym., Ichneumonidae). Bull. Brit. Mus. (Nat. Hist.), London Ent. 2: 307-459 (1952).
One of the pictures from Boldsystems attached.