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The species on the British list known as D. dilutella is now known to be two species, with the sister being D. inscriptella, due to differences in the genitalia of both sexes (Leraut (2001)) and the latter species was added to the British list in 2015 (D. Agassiz, Ent. Rec.127)
Old records in our region ascribed to dilutella are assumed to refer to inscriptella, with dilutella sensu stricto only having been confirmed from Cornwall, Ireland, the Isle of Man and Scotland; the mapped distribution reflects this assumption. Wingspan 18-23 mm.
All records of Deplanqueia dilutella must be confirmed by dissection to be acceptable.
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Flightime guide |
| Stage | J | F | M |
A | M | J |
J | A | S |
O | N | D |
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Detail records |
| Site | Date | Quantity | Recorder | Stage |
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| VC10 Isle of Wight |
| Brook Down (SZ38) | 26-Jun-2018 | three | Barden, Phil | Adult |
| Rew Down, Ventnor (SZ57) | 01-Jul-2018 | one | Barden, Phil | Adult |
| Rew Down, Ventnor (SZ57) | 01-Jul-2018 | three | Barden, Phil | Adult |
| Tennyson Down (SZ38) | 08-Jul-2018 | one | Barden, Phil | Adult |
| Tennyson Down (SZ38) | 08-Jul-2018 | two | Barden, Phil | Adult |
| Brook Down (SZ38) | 09-Jul-2018 | one | Barden, Phil | Adult |
| Windy Corner (SZ47) | 23-Jun-2019 | one | Outlaw, Iain | Adult |
| Compton Down (SZ38) | 29-Jun-2019 | one | Barden, Phil | Adult |
| Brook Down (SZ38) | 01-Jul-2019 | one | Barden, Phil | Adult |
| Bonchurch (SZ57) | 10-Jul-2019 | one | Barden, Phil | Adult |
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| VC11 South Hampshire |
| Oxenbourne Down (SU71) | 24-Jun-1972 | one | Else, George R | Adult |
| Oxenbourne Down (SU71) | 22-Jun-1973 | one | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 22-Jun-1973 | four | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 24-Jul-1973 | two | Else, George R | Adult |
| Oxenbourne Down (SU71) | 25-Jul-1973 | one | Dickson, Richard | Adult |
| Browndown Coastal Ranges (SZ59) | 14-Jun-1974 | one | Dickson, Richard | Adult |
| Portsdown (SU60) | 03-Jul-1975 | three | Dickson, Richard | Adult |
| Portsdown (SU60) | 03-Jul-1975 | one | Dickson, Richard | Adult |
| Browndown Coastal Ranges (SZ59) | 04-Jul-1975 | one | Dickson, Richard | Adult |
| Browndown Coastal Ranges (SZ59) | 04-Jul-1975 | three | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 05-Jul-1975 | 10 | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 05-Jul-1975 | 20 | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 05-Jul-1975 | - | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 05-Jul-1975 | five | Dickson, Richard | Adult |
| Oxenbourne Down (SU71) | 02-Aug-1975 | one | Dickson, Richard | Adult |
| Queen Elizabeth Country Park (SU71) | 07-Jul-1977 | three | Chadd, J | Adult |
| Portsdown (SU60) | 10-Jul-1977 | two | Dickson, Richard | Adult |
| Fareham (SU50) | 18-Jul-1997 | one | Dickson, Richard | Adult |
| Old Winchester Hill NNR (SU62) | 23-Jul-1997 | one | Dickson, Richard | Adult |
| Queen Elizabeth CP (SU71) | 07-Jul-1999 | 10 | Dickson, Richard | Adult |
| Fareham (SU50) | 18-Jul-2000 | one | Dickson, Richard | Adult |
| Fareham (SU50) | 29-Jul-2002 | one | Dickson, Richard | Adult |
| Wickham Common (SU51) | 04-Jul-2003 | one | Dickson, Richard | Adult |
| Portchester Common SSSI (SU60) | 24-Jun-2005 | five | Dickson, Richard | Adult |
| Fareham (SU50) | 04-Sep-2005 | one | Dickson, Richard | Adult |
| Fareham (SU50) | 29-Jun-2006 | one | McPherson, Ivor | Adult |
| Fareham (SU50) | 18-Jul-2006 | one | Dickson, Richard | Adult |
| Old Winchester Hill (SU62) | 13-Jun-2014 | two | Tindale, Anthony | Adult |
| Old Winchester Hill (SU62) | 23-Jun-2014 | two | Wheeler, Keith | Adult |
| West Meon (SU62) | 24-Jun-2014 | two | Opie, Maurice | Adult |
| Titchfield Haven NNR (SU50) | 11-Jul-2014 | one | Coker, Kevin | Adult |
| West Walk (SU61) | 21-Jul-2014 | one | Dickson, Richard | Adult |
| Old Winchester Hill (SU62) | 03-Jul-2015 | four | Dickson, Richard | Adult |
| Old Winchester Hill (SU62) | 03-Jul-2015 | three | Opie, Maurice | Adult |
| Old Winchester Hill (SU62) | 16-Jun-2017 | five | Coker, Kevin | Adult |
| Old Winchester Hill (SU62) | 19-Jun-2017 | one | Wheeler, Keith | Adult |
| Old Winchester Hill (SU62) | 03-Jun-2019 | one | Wheeler, Keith | Adult |
| Old Winchester Hill (SU62) | 05-Jul-2019 | two | Wheeler, Keith | Adult |
| Old Winchester Hill (SU62) | 05-Jul-2019 | two | Dickson, Richard | Adult |
| Old Winchester Hill (SU62) | 30-Aug-2019 | one | Opie, Maurice | Adult |
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