62.057 Phycitodes maritima (Coast Knot-horn)
ws: 18-22mm; May-Aug; yarrow (Achillea millifolium), common ragwort (Senecio jacobaea); local and chiefly coastal in England, Scottish Highlands.
ID: Phycitodes binaevella/saxicola/maritima and Homoeosoma nebulella/nimbella all show a similar forewing pattern of a chalky white costal half, brown dorsal half, first line reduced to black dots, and a pair of black discal dots.
P.binaevella and H.nebulella can be excluded on size and forewing marking but the remaining 3 species require genital dissection for confident identification.
Male genitalia: aedeagus fairly robust, uncus smooth without bristles, sacculus strongly angulate at distal end
Female genitalia: asymmetric bulb in ductus bursae at ~half its length; 2 unequal oval spiculate patches in corpus bursae
See Phycitodes for further information on identification of this group.
P.binaevella and H.nebulella can be excluded on size and forewing marking but the remaining 3 species require genital dissection for confident identification.
Male genitalia: aedeagus fairly robust, uncus smooth without bristles, sacculus strongly angulate at distal end
Female genitalia: asymmetric bulb in ductus bursae at ~half its length; 2 unequal oval spiculate patches in corpus bursae
See Phycitodes for further information on identification of this group.
§1 Foulness, Essex; 01/08/2010; male; fw 9.7mm
§2 Foulness, Essex; 18/08/2012; male; fw 8.9mm
§3 Foulness, Essex; 05/08/2012; male; fw 9.0mm
§4 Foulness, Essex; 19/07/2014; female
§5 Compton Bishop, Somerset; 24/08/2014; female
§6 Foulden Common, Norfolk; 14/08/2016; male; fw 8.8mm
§7 Foulden Common, Norfolk; 14/08/2016; female; fw 8.7mm
§8 Portland, Dorset; 11/09/2019; male; fw 7.6mm
§9 Foulness, Essex; 31/07/2020; female; fw 9.1mm
§10 Eskmeals dunes, Cumbria; 21/06/2023; male; fw 8.8mm
All images © Chris Lewis
§2 Foulness, Essex; 18/08/2012; male; fw 8.9mm
§3 Foulness, Essex; 05/08/2012; male; fw 9.0mm
§4 Foulness, Essex; 19/07/2014; female
§5 Compton Bishop, Somerset; 24/08/2014; female
§6 Foulden Common, Norfolk; 14/08/2016; male; fw 8.8mm
§7 Foulden Common, Norfolk; 14/08/2016; female; fw 8.7mm
§8 Portland, Dorset; 11/09/2019; male; fw 7.6mm
§9 Foulness, Essex; 31/07/2020; female; fw 9.1mm
§10 Eskmeals dunes, Cumbria; 21/06/2023; male; fw 8.8mm
All images © Chris Lewis
Page published 27/03/2012 | §2 added 03/11/2012 | §3 added 03/02/2013 | Text amended 24/06/2013 | §4 added 19/08/2014 |
§5 added 24/11/2014 | §6&7 added 19/04/2017 | §8 added 17/12/2019 | §9 added 03/02/2021 | §10 added 27/09/2023
§5 added 24/11/2014 | §6&7 added 19/04/2017 | §8 added 17/12/2019 | §9 added 03/02/2021 | §10 added 27/09/2023