Main: (Noctuidae / Noctuinae)
73.312 [B&F: 2080] Square-spot Dart (Euxoa obelisca) ([Denis & Schiffermüller], 1775)


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.

Flightime guide

Records Received By Year

% of total records
Max records: 7
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19

Percentage of Total Records

Total records
Max Percentage: 0.0051746443
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19

Phenology - Adult Records

Max records: 13
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

As above but the larger the symbol, the greater the number of records
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