Photo © Mike Wall

Passenger

Dysgonia algira

Checklist Number
72.087 [B&F: 2460]

Verification
Record will require further evidence, at least a good photograph, unless CMR is aware recorder has confidence in identification

Classification

Family:Erebidae
Subfamily:Erebinae
Genus:Dysgonia
Species:algira
Authority:(Linnaeus, 1767)

Very rare immigrant from southern Europe, appearing in south-eastern England. Until 1980 there had been just two records, but recorded nine times in Britain between 1981 and 2005, and with an unprecedented 12 further records in 2006: to date (2022) there have been 43 records (source: Atropos). In our area first recorded at Totland, Isle of Wight on 12 September 2006, with another on the island in 2018; the first for the mainland was in the same year, on 4 September in Wickham Common. A second was recorded in Bournemouth, Dorset (VC11) in August 2019, and another two have been recorded since, in 2020 and 2022.
Wingspan 44-48 mm. The most likely confusion species is Geometrician Prodotis stolida has forewing antemedian fascia without central compression and the postmedian fascia doubly curved; hindwing with a clear white spot above termen (MBGBI Vol 10). Observers are reminded that the very similar D. torrida (see Lepiforum) is a potential migrant although not reported from the British Isles to date. On the continent the larva feeds on Bramble and Sallow.

Update: National and local status update August 2020

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
Totland (SZ38)12/09/2006oneSam Knill-JonesAdult
Bonchurch (SZ57)01/09/2018oneJames HalseyAdult

VC11 South Hampshire

Site Date Quantity Recorder Stage
Wickham Common (SU51)04/09/2018oneKevin CokerAdult
Bournemouth (SZ19)25/08/2019oneSteve GoddardAdult
Southsea (SZ69)02/08/2020oneJ R LangmaidAdult
Pennington (SZ39)01/08/2022oneRichard CoomberAdult