Tortricidae : Olethreutinae
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Similar Suffolk Species
Dichrorampha petiverella
Common Drill
Dichrorampha alpinana
Broad-blotch Drill
Approx Length (c. 7.5mm) Wingspan (13-15mm)
      
      
      
      
    
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Dichrorampha flavidorsana
Narrow-blotch Drill

Knaggs, 18671275 / 49.319

Morley’s Final Catalogue: Hemley in 1934 and bred from tansy at East Bergholt in 1931-4 (Whittingham).

Recent Status: A rare species in Suffolk.

Life Style: A single brooded species that flies from June till August and comes to light. The moth can also be found on the foodplant. The larvae feed on Tanecetum vulgare. They feed in the rootstock. They hibernate and pupate in the larval habitation.

Identification: Dichrorampha alpinana and D. flavidorsana are very similar. Only the males can be separated on characters of the adult moth with difficulty. The hindwings are brown and become slightly paler at the base for D. alpinana. In D. flavidorsana they are clearly paler at the base this being so for the females of both species. The costal fold of the male reaches to just over one third for D. alpinana and to between one third and one half for D. flavidorsana. Genitalia dissection is the only assured method of identifying these two species. More Info

Verification Grade Comment: If recorded away from foodplant - Grade 4

Recorded in 3 (5%) of 58 10k Squares.
First Recorded in 1931.
Last Recorded in 2003.
Additional Stats

Dichrorampha vancouverana  |  Dichrorampha alpinana >

Determination
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
24/06/2003125TM23 - Felixstowe/Landguard Point
1934+25TM24 - Woodbridge/Martlesham
01/01/1931 to 31/12/1934+25TM03 - East Bergholt
Show Details | 1990 to 2019 | 2000 to 2019 |
Express Record Dichrorampha flavidorsana
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Copyright © Jim Wheeler 2020
   

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Wingspan: 13-15mm
Flight: June - July. (Aug)
Foodplant:   Tansy
Nat Status: Nationally Scarce B
Verification Grade:  Adult: 2
 Immature Adult
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Underlying maps using Digital Map Data © Norfolk Online Lepidoptera Archive - NOLA™ - Suffolk 2020. © James Wheeler - Norfolk Moths 2007 - 2020. Data © NOLA™ - Suffolk 2020
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