Main: (Gracillariidae / Gracillariinae)
15.008 [B&F: 0286] Caloptilia alchimiella (Scopoli, 1763)

 

Notes: Common in oak woodland and areas with scattered trees throughout much of the British Isles. In Hampshire and on the Isle of Wight reasonably well-distributed, but perhaps still under-recorded. Wingspan 10-13 mm. Easily confused with C. robustella, from which it can only safely be separated by dissection of the genitalia; both feed on oak, but C. alchimiella is probably univoltine with a protracted emergence period, while C. robustella is bivoltine. The adult rests by day on trunks, flies in the evening and comes sparingly to light; more frequently recorded in the larval stage, when mines are relatively easy to find where they are present. Larva mines leaves of Oak, subsequently living within a leaf-fold, over-wintering as a pupa.

Flightime guide
JFM AMJ JAS OND

Records Received By Year

% of total records
Max records: 48
   
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: 0.031109616
   
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: 29
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Phenology - Larval Records

Max records: 2
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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