Genus Empria

Empria

The Empria are characterised within the Allantinae by the following features. The abdomen is mostly black with a pair of silver/grey flecks on the basal tergites either side of the midline. The malar gap is at least half as long as the width of an antennal socket. The second antennal segment is shorter than the malar gap. The pedicel is as wide as or wider than long. The mesepisternum is smooth and unsculptured on the dorsal half.

There are 56 species of Empria globally with the majority being found in the palaearctic region. Fifteen species occur in Britain of which 10 also occur in Ireland. Most are widely distributed though Empria fletcheri and Empria alpina appear to have a montane, northerly distribution. With a few exceptions, Empria are difficult to separate to species level. Empria fletcheri and Empria immersa can be separated from the others by having yellow on the hind femurs.

The larvae are free feeders on members of the rosaceae family and birch and willows.

Species list:

Empria alpina Benson, 1938

Empria basalis Lindqvist, 1968

Empria camtschatica Forsius, 1928

Empria candidata (Fallén, 1808)

Empria excisa (Thomson, 1871)

Empria fletcheri (Cameron, 1878)

Empria immersa (Klug, 1818)

Empria liturata (Gmelin, 1790)

Empria minuta Lindqvist, 1968

Empria pallimacula (Serville, 1823)

Empria parvula (Konow, 1892)

Empria pumila (Konow, 1896)

Empria sexpunctata (Serville, 1823)

Longicornis Group

Empria alector Benson, 1938

Empria longicornis (Thomson, 1871)

Empria tridens (Konow, 1896)

References:

Benson, R.B., 1952. Handbooks for the Identification of British Insects. Hymenoptera, Symphyta, Vol 6, Section 2(a-c), Royal Entomological Society, London

Liston A, Knight G, Sheppard D, Broad G, Livermore L (2014) Checklist of British and Irish Hymenoptera - Sawflies, ‘Symphyta’. Biodiversity Data Journal 2: e1168. https://doi.org/10.3897/BDJ.2.e1168