Photo © David Shute

Rest Harrow

Aplasta ononaria

Checklist Number
70.296 [B&F: 1664]

Verification
Record will be accepted (subject to date and location checks)

Classification

Family:Geometridae
Subfamily:Geometrinae
Genus:Aplasta
Species:ononaria
Authority:(Fuessly, 1783)

A Red Data Book species, on calcareous grassland and sand-dunes in parts of Kent, predominantly coastal, a priority species under the UK Biodiversity Action Plan. First recorded as a breeding species at The Warren, near Folkestone, Kent in 1937 since when it has been established; it may have been present continuously since the 19th century as occasional sightings were made in the vicinity. Otherwise known as a rare immigrant from mainland Europe, appearing sporadically on the southern coast of England. In Hampshire, G M Haggett in his article 'Larvae of the British Lepidoptera Not Figured by Buckler' (Haggett, 1969, Proc Brit Ent Soc 1: pt 2: 78) makes mention of a New Forest record in 1909, without giving a source or any further information, and Goater (1974) references it occurring in that area in 1924 from South, Moths of the British Isles, Series 2: 81, again with no other details. Since that time, there have been just three reports, all of adults to light, from Southsea in July 1959 and Rowlands Castle in July 1962, and a surprise first for North Hampshire at Cheriton in 2020. On the Isle of Wight, recorded for the first and to date only time at Ventnor in August 2005. Wingspan 26-31 mm. Unmistakable. Larva feeds on Common Restharrow.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)

No Larval records to show.

VC10 Isle of Wight

Site Date Quantity Recorder Stage
Bonchurch (SZ57)17/08/2005oneJames HalseyAdult

VC11 South Hampshire

Site Date Quantity Recorder Stage
New Forest (SU30)1909oneUnknownAdult
New Forest (SU30)1924oneUnknownAdult
Southsea (SZ69)15/07/1959oneRoger HaywardAdult
Rowlands Castle (SU71)09/07/1962oneD W H FfennellAdult

VC12 North Hampshire

Site Date Quantity Recorder Stage
Cheriton (SU52)10/08/2020oneDave ShuteAdult