37.034 Coleophora frischella (White-clover Case-bearer)
ws: 10.5-12.5mm; Jun-Jul; red clover (Trifolium pratense); fairly common in S.England and Wales.
Formerly considered conspecific with C.alcyonipennella & C.deauratella
Formerly considered conspecific with C.alcyonipennella & C.deauratella
Coleophora frischella §1 male
ID: Forewing plain, unicolorous, not white, without white markings; metallic >6 species
C.deauratella vs trifolii: (vs) ws:15-20mm
C.deauratella vs amethystinella: apical 1/5 of flagellum greyish-white (vs) ws14-18mm, antenna fuscous to apex.
C.deauratella vs mayrella: (vs) ws:10.5-12mm, antenna ringed dark fuscous in apical portion
C.deauratella vs frischella/alcyonipennella: base of flagellum clothed in scales to 1/10 (m) or 1/4 (f) (vs) ws:11.5-14.5mm; only basal 2-3 segments of flagellum thickened with projecting scale. (not sure that the difference between 2-3 segments and 1/10 is sufficient to separate males).
Male and female genitalia, except alcyonipennella, are figured, but not keyed, in MBGBI3. Moth Dissection shows male genitalia of trifolii, alcyonipennella, mayrella & deauratella and females of trifolii, alcyonipennella, frischella and deauratella. C.deauratella is separable from trifolii, mayrella & fuscicornis without recourse to genital examination. C.deauratella should also be distinguishable from C.alcyonipennella and C.frischella on antennal characteristics - see key. Both sexes of C.alcyonipennella & C.frischella appear identical on external characteristics.
Male C.deauratella vs C.frischella/alcyonipennella: vinculum evenly ‘V’ shaped vs pinched and produced at apex; postero-lateral angle of sacculus with a distinct pointed process vs with a small indistinct process; aedeagus with inner curve sclerotised almost to juxtal attachment vs sclerotised at a distance from the juxtal attachment approximately =to the length of the sclerotised section.
C.deauratella vs trifolii: (vs) ws:15-20mm
C.deauratella vs amethystinella: apical 1/5 of flagellum greyish-white (vs) ws14-18mm, antenna fuscous to apex.
C.deauratella vs mayrella: (vs) ws:10.5-12mm, antenna ringed dark fuscous in apical portion
C.deauratella vs frischella/alcyonipennella: base of flagellum clothed in scales to 1/10 (m) or 1/4 (f) (vs) ws:11.5-14.5mm; only basal 2-3 segments of flagellum thickened with projecting scale. (not sure that the difference between 2-3 segments and 1/10 is sufficient to separate males).
Male and female genitalia, except alcyonipennella, are figured, but not keyed, in MBGBI3. Moth Dissection shows male genitalia of trifolii, alcyonipennella, mayrella & deauratella and females of trifolii, alcyonipennella, frischella and deauratella. C.deauratella is separable from trifolii, mayrella & fuscicornis without recourse to genital examination. C.deauratella should also be distinguishable from C.alcyonipennella and C.frischella on antennal characteristics - see key. Both sexes of C.alcyonipennella & C.frischella appear identical on external characteristics.
Male C.deauratella vs C.frischella/alcyonipennella: vinculum evenly ‘V’ shaped vs pinched and produced at apex; postero-lateral angle of sacculus with a distinct pointed process vs with a small indistinct process; aedeagus with inner curve sclerotised almost to juxtal attachment vs sclerotised at a distance from the juxtal attachment approximately =to the length of the sclerotised section.
Dissection
Male genitalia
§1 Westcliff-on-sea, Essex; 03/08/2010; male; fw 6.3mm
All images © Chris Lewis
All images © Chris Lewis
Page published November 2011 (§1)
