Main: (Noctuidae / Xyleninae)
73.096 [B&F: 2381] Uncertain (Hoplodrina octogenaria) (Goeze, 1781)


Common in a wide range of habitats, mainly in low-lying areas, including woodland, rough meadows and gardens throughout the British Isles. Widespread and common in Hampshire and on the Isle of Wight. Wingspan 31-33 mm. Easily and frequently confused with Rustic H. blanda, but generally H. octogenaria has broader and rougher forewing, stigmata contrasting with remainder of forewing, and more conspicuous cross-lines (MBGBI Vol 10). The general coloration of The Rustic is brown to grey with a glossy appearance, whereas The Uncertain is ochreous brown and coarser looking, and the orbicular stigma is usually smaller in The Rustic. The hindwings are greyer and glossier in The Rustic and the stigma smaller than The Uncertain. The Uncertain flies from late May, whereas The Rustic usually appears at the end of June. See the comparison photo in the collection above.

Please note that worn specimens of either species should be aggregated, if not determined by genitalia examination. It is also recommended that inexperienced recorders aggregate the two species, unless the specimen or photo is confirmed by their County Moth Recorder or an experienced local recorder.

Larva feeds on various herbaceous plants, including Chickweed, Primrose, Dock and Plantain.

Flightime guide

Records Received By Year

% of total records
Max records: 1135
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Percentage of Total Records

Total records
Max Percentage: 0.93724203
00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20

Phenology - Adult Records

Max records: 2452
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Phenology - Larval Records

Max records: 1
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
Click for distribution map

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