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Mompha divisella
Hourglass Mompha Herrich-Schäffer, 1854
Momphidae
889 / 40.005
Photo © Ben Sale,  Braughing Friars, Hertfordshire (06/08/14) - Genitalia Dissected

Similar Herts & Middlesex Species
Obscure Mompha
Mompha jurassicella
Dusky Hourglass Mompha
Mompha bradleyi
Wingspan: 10-13mm
Flight: Aug - May (hibernating)
Foodplant:   Various willowherbs.
Nat Status: Nationally Scarce A
Verification Grade:  Adult: 4

General comments:

Mompha divisella and Mompha bradleyi are of similar appearance and naming of adults usually calls for genitalia examination. Larvae of divisella mine the stems of Epilobium montanum, palustris, lanceolatum, parviflorum and adenocaulon and there are few other obvious signs than a pea-sized swelling of the stem at a node. M. bradleyi is so far known only on Epilobium hirsutum.

Determination by Genitalia Examination Required

Recorded in 8 (20%) of 41 10k Squares.
First Recorded in 1963.
Last Recorded in 2023.

Latest Records
Date#VC10k - General Area
19/09/2023121TQ16 - Sunbury / Hampton Court
15/03/2020121TQ17 - Brentford / Hounslow / Richmond
17/07/2019120SP90 - Berkhamsted
19/07/2016120TL20 - Potters Bar
29/10/20151521TQ07 - Staines-Upon-Thames
06/08/2014120TL22 - Stevenage
18/07/2014220TL20 - Potters Bar
02/07/2014120TL20 - Potters Bar
03/12/2009121TQ38 - City of London / Hackney
20/05/2004121TQ27 - Hammersmith / Westminster
Further info: Mompha divisella
 
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