Main: (Tortricidae / Tortricinae)
49.133 [B&F: 0968] Cochylis nana (Haworth, 1811)

 

Notes: Common in birch woodland and on heathland throughout much of Britain. Frequent in Hampshire, but only one old record from the Isle of Wight. Wingspan 9-12 mm. A distinctive species, at once recognised by its small size and characteristic grey and ochreous general coloration, and the broad median fascia of the forewing with its outer margin outward-oblique from the costa and the inner margin diffuse and often confluent with the ill-defined basal fasciae [Bradley]. Larva feeds within catkins of Downy Birch and Silver Birch, over-wintering in a cocoon.

Flightime guide
JFM AMJ JAS OND

Records Received By Year

% of total records
Max records: 16
   
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: 0.022233091
   
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: 23
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Distribution Map

Historical distribution at tetrad resolution
Click for density map

Record Density

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