Species Details

ABH: 7.015

BF: 140

Family: Adelidae

Subfamily: Nematopoginae

Taxon: Nematopogon swammerdamella

Authority: (Linnaeus, 1758)

Vernacular: Large Longhorn

Account: Common in deciduous woodland throughout the British Isles. Widespread and often fairly common throughout Hampshire and on the Isle of Wight. Wingspan 17-21 mm. Resembles N. schwarziellus, with long white antennae and yellow-orange head tufts, but larger and with no discal spot; flies earlier in the year (MBGBI Vol 1). Larva feeds on dead leaves, living within a flat, movable case on the ground, and over-wintering twice.

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: 17 — 21 mm

Surrey Flight Period: 12 Apr (2017) — 12 Jun (2001)

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

Foodplant:

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

Status: Common

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/nematopogon-swammerdamella/
Statistics

* Based on adult records only.

Records: 86

Individuals: 9

Earliest Year: 1999

Latest Year: 2025

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