Main: (Tortricidae / Tortricinae)
49.053 [B&F: 1022a] Cereal Tortrix (Cnephasia pumicana) (Zeller, 1847)

 

Notes: Local in gardens and other open areas in south-east England. C. pumicana was synonymised under C. pasiuana by Razowski (1989). Work recently published in Langmaid and Agassiz, 2010 indicates that consistent differences in genitalia exist between the two taxa, especially in the male, and that therefore there is no reason to not treat pumicana as a valid taxon. On external morphology, the adult's indistinct and often pale patterning (dark specimens do occur) makes identification on wing features alone impossible, as it is indistinguishable from pasiuana and, for pale specimens, from genitalana. The earliest confirmed record that has so far been identified from re-examining genitalia preparations previously attributed to pasiuana dates from 1986, and all have occurred in south-east England, indicating that this is most likely a recent arrival to the country; confirmed English specimens have been taken from 24 June to 8 August, with the majority in mid-late July. On the continent it is stated as being polyphagous on cereals, grasses, legumes and flax (Chambon & Genestier, 1980). Records in Hampshire date from 2004 onwards, but so far yet to be recorded on the Isle of Wight. The wingspan is similar to pasiuana, at 15-20 mm.

Flightime guide
JFM AMJ JAS OND

Records Received By Year

% of total records
Max records: 5
                                     
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: 0.0025713816
                                     
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: 6
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
Click for distribution map
Web Hosting from Vision Internet Limited