There are 14 records currently recognised, all of which are from central and northern Scotland except for outliers at Hafren Forest (mid Wales) in 1973 and near Coventry in 1987. The pattern of records is more suggestive of a species which is easily overlooked rather than declining. Formal assessment is difficult given the very low data volumes. Whilst the low values for EOO, AOO and number of locations would point to an Endangered status under Criteria B1 and B2, the status Near Threatened has been assigned instead, given that demonstrating continuing decline relies on very low numbers of records in an under-recorded part of the country (i.e. it was detected at the same location in 1996 and 1998, and another in 2010).

There are nine records recognised to date, including two in the last 30 years (from Wiltshire in 2005 and Lincolnshire in 2019). The pattern suggests a very rare and/or overlooked species of southern England, with perhaps a tendency to occur on wetter sites. There has been confusion about identification of this genus for many years and redetermination of other Aprosthema specimens may reveal a few more records. The small values for EOO, AOO and number of locations would point towards an Endangered status under Criteria B1 and B2, but a Near Threatened status is assigned as it is not mathematically possible to demonstrate continuing decline with just two records in the last 30 years. The category Data Deficient does not seem appropriate given that it should be used when either Least Concern or Critically Endangered are similarly possible (and the former does not seem a plausible category).

Records are widespread to northern Scotland but this a local species. Whilst the data suggest a pattern of recent continuing decline, and the AOO value is low, the 26 recent locations are too high to assign a threatened status under Criterion B2. However, the reduction in AOO over the last 10 years (the causes of which are not understood) is calculated at 27%, just short of the threshold value for Criterion A2, and so the status of Near Threatened is assigned.

A little known northern species. There was an extensive run of records between 1946 and 1952 from Speyside (Kincraig, Aviemore, Grantown) and Perthshire (Ben Lawers), then nothing until two further Perthshire records in 2010 and 2019. The species is clearly extant but the available data are too few to adequately judge recent trends. However, with just two recent locations and correspondingly low values for EOO and AOO, the status Near Threatened has been assigned to recognise that an Endangered status would otherwise have been applicable under Criteria B1 and B2.

Records are distributed widely north to the Great Glen. Reports of this species have declined over a longer time period. The low AOO and number of locations would point to a Vulnerable status under Criterion B2, but the five records between 1991 and 2020 make it difficult to make a clear assessment about whether there was continuing decline over that period. Such a decline remains plausible though, particularly against the backdrop of a general increase in sawfly recording activity and hence Near Threatened has been assigned.

Sparsely recorded from a range of sites in south-east England over the last century. Only three records since 1950 and clearly rare and/or highly unobtrusive. The small values for EOO, AOO and number of locations would point towards an Endangered status under Criteria B1 and B2, but a Near Threatened status is assigned as it is not possible to demonstrate continuing decline with just two records in the last 30 years. The category Data Deficient does not seem appropriate given that it should be used when either Least Concern or Critically Endangered are similarly possible (and the former does not seem a plausible category).

Records are widespread in southern Britain north to Yorkshire and south Cumbria, although with few Welsh records to date; there is also a single old record from Scotland. Assessments against the criteria do not quite justify a threatened status, but are close to reaching the threshold for Criterion B2ab(i) based on a small recent AOO and number of locations. Continuing decline in EOO over recent decades is demonstrable, but as data volumes are too small to enable the production of concave hulls using an alpha parameter of 0.5, a relaxation to allow a parameter value of 1.0 is required. Given this slight departure in methodology, the status Near Threatened is assigned.

Records have historically been distributed widely across Britain. However, recent years have seen a contraction to what might be considered to have been a natural range in Caledonian pinewoods, with almost none seen around more recently planted pines in the south of the range. This is particularly striking against a backdrop of strongly increased levels of sawfly recording. Undertaking the formal mathematical assessment is hampered by the small dataset making a concave hull with an alpha parameter of 0.5 non-calculable. However, alternative means of producing a polygon around the records (i.e. relaxing the alpha parameter value to 1.0 for the time periods 1991-2005 and 2006-2020) does support the notion that the standard EOO metric would show a decline of over 30% were more records proportionally available for both time periods. In light of this, the status Near Threatened has been assigned on the basis of the data coming close to criterion A2c.

Widespread throughout England and Wales, with just one 19th century Scottish record to date. Assessments against all criteria give no reason to consider it threatened. However, a reduction of AOO by 25% in the last ten years is notable against the backdrop of a general significant increase in sawfly recording, and hence the status Near Threatened is warranted.

A rare or overlooked species, with only 10 records in total, spread from Sussex to south-west Scotland with little clear pattern. Since 1990, the only records have come from Trawscoed in North Wales (two records in 2017) and Keldy Ponds in the North York Moors (2019). A status of Vulnerable under criterion D2 could be argued if there was a plausible threat for both of the recent sites, but it is not clear that such would be warranted. However, the very low number of records suggest that Near Threatened is an appropriate status to use.