Main: (Yponomeutidae / Yponomeutinae)
16.017 [B&F: 0438] Swammerdamia pyrella (Villers, 1789)

 

Notes: Common in hedgerows, woodland, orchards and gardens throughout most of the British Isles. In Hampshire and on the Isle of Wight increasingly recorded in recent years, although it is unclear whether this is due to increased observer coverage or a real growth in population. Wingspan 10-13 mm. Apart from S. passerella, which occurs only in the Scottish Highlands and which is separable only by dissection of the genitalia, S. pyrella is distinguished from all other Swammerdamia and Pseudoswammerdamia species by the coppery terminal cilia, small size and dark appearance (MBGBI Vol 3). Larva feeds on Hawthorn, Apple and Pear, beneath a silken web, over-wintering as a pupa in a cocoon.

Flightime guide
JFM AMJ JAS OND

Records Received By Year

% of total records
Max records: 84
90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13

Percentage of Total Records

Total records
Max Percentage: 0.090422325
90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13

Phenology - Adult Records

Max records: 104
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Phenology - Larval Records

Max records: 3
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Distribution Map

Historical distribution at tetrad resolution
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Record Density

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