Main: (Gracillariidae / Gracillariinae)
15.012 [B&F: 0290] Caloptilia semifascia (Haworth, 1828)

 

Notes: Local in woodland edges and hedgerows in southern England and Wales, widespread, but tending to occur in isolated but sometimes populous colonies; absent from the north Midlands, but reappearing in Yorkshire and Cumbria. Widespread and fairly common in Hampshire and on the Isle of Wight. Wingspan 10-12 mm. MBGBI Vol 2 states that it emerges from late July to September, remains active to October before overwintering until May, and is therefore mainly univoltine. Imago seldom encountered at light, and more likely to be recorded in the larval stage, when mines are relatively easy to find where they are present. Larva mines leaves of Field Maple, subsequently living within a leaf-fold.

Flightime guide
JFM AMJ JAS OND

Records Received By Year

% of total records
Max records: 92
             
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: 0.047313422
             
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: 24
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Phenology - Larval Records

Max records: 15
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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