This is the sole British representative of the subgenus Pemphredon, a group which has had a little more taxonomic stability than the other subgenera (Cemonus and Ceratophorus).

Three species of Oxybelus occur in the British Isles. These wasps are superficially very similar to one another (in some localities - e.g. the Gower, West Glamorgan - they may all fly together). They are rather small, active wasps (body length 5-9 mm) with the body predominantly black with some or all of the abdominal terga marked with a pair of pale yellow or white spots. The female of O. argentatus is perhaps the most attractive of the three, its abdomen clothed with rather dense, decumbent, silvery hairs.

A scarce and little known species in Britain, only recently added to the British list (Guichard 2002). It is very similar to the common P. gracilis and great care must be taken with determination as the characters are subtle. Ecological differences between the two species have been reported by Westrich & Schmidt (1983), who found that P. gracilis was foraging for aphids… Read more

The males of this species have a striking appearance, with a greatly elongated head constricted behind the eyes to form a distinct, almost stalk-like, ‘neck’. The male’s fore metatarsus is also distinctive, being drawn out into a quadrate shield-shaped process. Females are less distinctive, closely resembling females of Ectemnius, although the gastral terga are more strongly punctate.

Previously known as  T. ambiguum and then briefly as T. madeirense. Workers of this species look superficially like the common black garden ant Lasius niger, but can be distinguished in the field by their behaviour when disturbed. On warm days the small black workers (2.6-4.2 mm) dart around very quickly and aggressively with their gasters slightly raised. Under magnification they completely lack the standing body and appendage hairs of L. niger, the petiole node is also inconspicuous and overhung by the first gastral segment also workers and gynes… Read more

Stenamma westwoodii is a small dark reddish brown myrmicine ant very similar to the more common S. debile (Förster). Up until the 1990s it was thought to be the only species of its genus in the British Isles. It is now clear that S. debile is much more common and older records for S. westwoodii are now treated as S. westwoodii agg and most early records are likely to be S. debile.

Stenamma debile is a small dark reddish-brown myrmicine ant. Workers of the genus Stenamma can  easily be distinguished from other myrmicines (ants with both a petiole and post-petiole) by their small size, slow movement, pin-point eyes and long narrow petiole. Up until the 1990s any Stenamma found in the British Isles were recorded as westwoodii or, often, under the misspelling westwoodi. The fact that there are two species of Stenamma in the British Isles was pointed out by Dubois (1993). Stenamma debile is by far the… Read more

Myrmica scabrinodis is a common red ant found in many habitats. It could be confused with a number of other Myrmica ants. Examination of the base of the scapes is required to separate it from other Myrmica.

Myrmica specioides is a red ant similar in appearance to others of its genus. It has a scape sharply angled at the base and is most likely to be confused with M. scabrinodis. It can be distinguished in the females and workers by the shape of its post-petiole and the angle of its scape (see Attewell 2006) and in the males which have a shorter scape than M. scabrinodis. There is some controversy over the name of this species with some authors using the name M. bessarabica Nasonov.