Photo © Philip Barden
Square-spot Dart
Euxoa obelisca
Checklist Number73.312 [B&F: 2080]
Verification
Record will require further evidence, at least a good photograph, unless CMR is aware recorder has confidence in identification
Nationally scarce (Nb) on sea cliffs and rocky hillsides, along the coasts of southern and western Britain. In Hampshire and on the Isle of Wight probably still frequent on chalk cliffs on the south side of the Isle of Wight, between the Needles and Ventnor. Wingspan 35-40 mm. The most likely confusion species is White-line Dart E. tritici, but in Square-spot Dart the region beyond the postmedian line is almost without markings and nearly always lacks any trace of the wedge-shaped marks which are so often a feature of White-line Dart (MBGBI Vol 9), however some individuals can be separated only by dissection of the genitalia. Larva feeds on herbaceous plants such as Common Rock-rose and Lady's Bedstraw, over-wintering as an egg or small larva.
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)
