49.083 Acleris ferrugana (Tawny Oak Tortrix)
ws:14-18mm; bivoltine Jul-Aug, bivoltine in south Sep-Apr; oaks (Quercus spp), goat willow (Salix caprea); common in oakwoods and heaths throughout GB.
Synonyms: Peronea fissurana (Pierce & Metcalfe)
Synonyms: Peronea fissurana (Pierce & Metcalfe)
Acleris ferrugana §3 male
ID: Ground colour pale to reddish ochreous, sometimes with darker strigulation and a few scattered black scales.
Very variable and similar to the equally variable A.notana, from which it can only be reliably separated by genital dissection.
Male genitalia: Assuming that the illustrations in MBGBI 5.1 are incorrectly labelled*: In A.ferrugana the aedeagus has a strong preapical spine and two long slender cornuti. In A.notana the aedeagus has a simple apex and 3 short spiniform cornuti. There are also differences in the shape of the sacculus, that of A.ferrugana being relatively narrow.
Female Genitalia: In A.notana the anterior border of the sterigma is a smooth semicircle with long lateral projections; in A.ferrugana the anterior border of the sterigma has a notch on each side with short lateral projections and shorter medial projections. In A.notana the introitus (ampulla) is parallel-sided, weakly-sclerotised and narrower than the posterior portion of the ductus bursae; in A.ferrugana the introitus is strongly sclerotised, broader posteriorly and broader than the ductus bursae.
*MBGBI5.1 comments (p16) that "The genitalia drawings for this species and A.ferrugana in Razowski (1984, 2001, 2002) are reversed" - in both sexes. I have not seen these references, but EITHER [MBGBI5.1 has repeated this error] OR [all other references are incorrect AND the synonyms given in MBGBI5.1 are reversed]. Images and illustrations showing the preapical aedeagal spine in the male and a notched anterior border to the sterigma with a broad introitus in the female are labelled as Peronea fissurana in Pierce and Metcalfe, A.ferrugana in BTM (Bradley), Sterling & Parsons and at Moth Dissection and as A.notana in MBGBI5.1. Images and illustrations showing a simple aedeagal apex and 3 cornuti in the male and long lateral projections to the sterigma with a narrow introitus in the female are labelled as Peronea ferrugana in Pierce and Metcalfe, A.tripunctana in BTM (Bradley), A.notana in Sterling & Parsons and at Moth Dissection and as A.ferrugana in MBGBI5.1.
Very variable and similar to the equally variable A.notana, from which it can only be reliably separated by genital dissection.
Male genitalia: Assuming that the illustrations in MBGBI 5.1 are incorrectly labelled*: In A.ferrugana the aedeagus has a strong preapical spine and two long slender cornuti. In A.notana the aedeagus has a simple apex and 3 short spiniform cornuti. There are also differences in the shape of the sacculus, that of A.ferrugana being relatively narrow.
Female Genitalia: In A.notana the anterior border of the sterigma is a smooth semicircle with long lateral projections; in A.ferrugana the anterior border of the sterigma has a notch on each side with short lateral projections and shorter medial projections. In A.notana the introitus (ampulla) is parallel-sided, weakly-sclerotised and narrower than the posterior portion of the ductus bursae; in A.ferrugana the introitus is strongly sclerotised, broader posteriorly and broader than the ductus bursae.
*MBGBI5.1 comments (p16) that "The genitalia drawings for this species and A.ferrugana in Razowski (1984, 2001, 2002) are reversed" - in both sexes. I have not seen these references, but EITHER [MBGBI5.1 has repeated this error] OR [all other references are incorrect AND the synonyms given in MBGBI5.1 are reversed]. Images and illustrations showing the preapical aedeagal spine in the male and a notched anterior border to the sterigma with a broad introitus in the female are labelled as Peronea fissurana in Pierce and Metcalfe, A.ferrugana in BTM (Bradley), Sterling & Parsons and at Moth Dissection and as A.notana in MBGBI5.1. Images and illustrations showing a simple aedeagal apex and 3 cornuti in the male and long lateral projections to the sterigma with a narrow introitus in the female are labelled as Peronea ferrugana in Pierce and Metcalfe, A.tripunctana in BTM (Bradley), A.notana in Sterling & Parsons and at Moth Dissection and as A.ferrugana in MBGBI5.1.
§1 Belfairs Woods, Essex; 07/04/2015; fw 7.5mm; male
§2 Belfairs Woods, Essex; 07/04/2015; fw 7.2mm; male
§3 Arne, Dorset; 02/07/2016; male; fw 6.8mm; to light
§4 Struy, Inverness-shire; 03/05/2016; male; fw 8.3mm; to light
§5 Pound Wood, Essex; 11/07/2019; male; to light
§6 Pound Wood, Essex; 11/07/2019; male; fw 5.8mm!; to light
§7 Pound Wood, Essex; 09/11/2020; female; fw 7.5mm; to light
§8 Pound Wood, Essex; 12/11/2021; female; fw 7.8mm
§9 Pound Wood, Essex; 09/03/2022; male; fw 8.2mm
All images © Chris Lewis
§2 Belfairs Woods, Essex; 07/04/2015; fw 7.2mm; male
§3 Arne, Dorset; 02/07/2016; male; fw 6.8mm; to light
§4 Struy, Inverness-shire; 03/05/2016; male; fw 8.3mm; to light
§5 Pound Wood, Essex; 11/07/2019; male; to light
§6 Pound Wood, Essex; 11/07/2019; male; fw 5.8mm!; to light
§7 Pound Wood, Essex; 09/11/2020; female; fw 7.5mm; to light
§8 Pound Wood, Essex; 12/11/2021; female; fw 7.8mm
§9 Pound Wood, Essex; 09/03/2022; male; fw 8.2mm
All images © Chris Lewis
Page published 17/04/2015 (§1-2) | §3 added 05/09/2016 | §4 added 24/06/2017 | §5&6 added 24/02/2020 | §7 added 25/11/2020 |
§8 added 17/12/2021 | §9 added 06/05/2022
§8 added 17/12/2021 | §9 added 06/05/2022
