Species Details

ABH: 32.002

BF: 667

Family: Depressariidae

Subfamily: Depressariinae

Taxon: Semioscopis steinkellneriana

Authority: ([Denis & Schiffermüller], 1775)

Vernacular: Black-marked Diviner

Account: Local in hedgerows and scrub, especially in blackthorn-thickets, across most of Britain, except in extreme south-west England and northern Scotland. In Hampshire and on the Isle of Wight recorded in most years, but with no discernible increase in numbers, despite the increase in observer coverage, so the decline is probably more serious than the records suggest. Wingspan 18-23 mm; S. avellanella is similar, but the wing markings are different and S. steinkellneriana lacks the obvious basal streak of S. avellanella. Males fly on sunny mornings. Larva feeds on Blackthorn, Rowan and Hawthorn, living within a spun or rolled leaf, and over-wintering as a pupa.

Accounts provided by and used with the kind permission of Mike Wall, Hampshire County Moth Recorder. These will in due course be gradually replaced with species accounts with a Surrey context.

Wingspan: 18 — 23 mm

Surrey Flight Period: 6 Apr (2009) — 1 May (2016)

The flight period of overwintering adults are not given. See the flight chart below the distribution map.

Foodplant: Crataegus sp., Prunus spinosa (Blackthorn), Sorbus aucuparia (Rowan).

Foodplant accounts are from the HOSTS database — Natural History Museum, London, UK. (CC0).

Status: Local

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 2 — Care needed to identify, an image may be required 🤔
Further Information: https://www.ukmoths.org.uk/species/semioscopis-steinkellneriana/
Statistics

* Based on adult records only.

Records: 11

Individuals: 1

Earliest Year: 1996

Latest Year: 2020

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