14. GRACILLARIIDAE

Vertex smoothly scaled, frons always silvery white. Hindtibia with a row of strong bristles dorsally.

Vertex smoothly scaled or rough-haired, frons often white. Hindtibia smoothly scaled or with bristles.

6.0-7.5mm. June to October and after hibernation in March. Forewing with apical one-third suffused ochreous; five dark grey costal strigulae, the second extended to a fascia, the first often extended towards dorsum.

6.5-8.0mm. From late March to late October (adult hibernates). Forewing with basal two-thirds unicolorous white or with grey and ochreous suffusion, apical one-third suffused ochreous; second strigula extended to a fascia; a dark grey dorsal spot in basal quarter near base.

5.5-7.0mm. July to September and after hibernation in April and May (abroad). Forewing with apical third suffused ochreous and dark grey; second strigula often extended to a fascia.

5.0-6.5mm. Voltinism probably same as in P. xenia. Very similar to that species.

Legs often with dark markings. Maxillary palpus almost indiscernible.

Forewing with ground colour white or whitish, variably suffused with dark scales, but usually with dark appearance; for pale specimens of Phyllonorycter pastorella see couplet 8; pale basal streak absent.

Forewing with or without pale basal streak. To this alternative belong a few species with a rather matt appearance of forewing, viz. Phyllonorycter connexella, P. corylifoliella and P. salictella; these species have a pale basal streak. To this alternative also belong species with ground colour white or whitish, but these species never have a dark appearance.

7.0-8.5mm. June to November and after hibernation April and May. Flagellum unicolorous or annulated. Forewing less dark sprinkled, white markings enlarged and sometimes fused, giving the wing a pale appearance. Pale forms of this species (summer generation?). See couplet 11.

Antenna at least partly annulated, sometimes less distinct.

Forewing grey, often with reddish tinge or brownish; outer edge of first dark fascia beneath middle of wing.

Forewing grey withoout reddish tinge; dark markings often giving the impression of blocks and triangles, outer edge of first dark fascia angled in middle of wing or beneath.

7.0-8.5 mm. Voltinism supposedly as in P. pastorella. Forewing brownish or greyish. Vertex white, mixed brownish anteriorly.

6.5-8.0mm. Voltinism supposedly as in P. pastorella. Forewing brownish or reddish-grey. Vertex often white, often mixed brownish, in particular anteriorly.

7.0-8.5mm. June to November, after hibernation April and May. Forewing brownish grey; five dark costal strigulae recognizable. Frons whitish, vertex pale brown to brown, often darker anteriorly. See couplet 8.

6.5-8.4 mm. Voltinism supposedly as in P. pastorella. Forewing grey; five dark costal strigulae. Frons whitish, vertex dark brown, whitish posteriorly.

7.0-9.0mm. Late April to early September. Forewing shining white; dark basal area with curved white stripe form middle of base to dorsum; cilia white with black apical hook. Vertex white with a few dark hair-scales.

7.0-9.0mm. Mid April to early September. Forewing fringe without dark apical hook. Vertex dark brown anteriorly, white posteriorly. See couplet 56.

6.0-7.5mm. Late April to early October. Forewing fringe with apical hook. Vertex white.

7.0-9.0mm. Late April to mid September. Forewing fringe without apical hook. Vertex white, mixed with a few blackish brown hair-scales.

6.0-8.3mm. May and August. Forewing fringe without apical hook. Vertex whitish, mixed with a few brown hair-scales. See couplet 66.

8.0-9.5mm. Late April to early September. Vertex white, mixed with a few brown scales.

6.0-8.5mm. Early May to late September. Basal quarter of forewing with two short dark costal strigulae and one dorsal. Vertex white, sometimes mixed with brown hair-scales.

Dark strigulae in basal quarter of forewing similar to P. geniculella.

7.0-8.5mm. May and July, August. Forewing with one dark dorsal strigula, terminating midway between the two dark costal strigulae; dark dorsal strigula often interrupted. Vertex white, usually mixed with brown hair-scales.

6.5-8.0mm. May and August. Forewing in basal quarter with one dark dorsal strigula almost touching second dark costal and often not quite touching dorsum. Vertex white, usually brown anteriorly.

Opposite strigulae of forewing may nearly join or their dark edges touching.

Vertex white, pale grey, yellowish, ochreous, brown and occasionally very dark; in the latter case vertex pale grey posteriorly. Frons white.

6.5-8.0mm. Late April to early September. Forewing dark golden brown, sometimes suffused dark; two silvery white fasciae; short dark-edged silvery basal streak, sometimes obscure. Frons shining white.

6.0-8.0mm. Early May to early October. Forewing bright golden brown; silvery fascia, two silvery costal and dorsal strigulae. Frons leaden metallic.

6.5-8.0mm. Late April to late August. Forewing shining brownish orange; two slightly sinuate silvery fasciae, one costal and one dorsal strigula. Frons leaden metallic.

7.0-9.5mm. May and August, September. Forewing golden ochreous, markings shining white; basal streak to near middle, one fascia, three costal and two dorsal strigulae. Thorax shining golden ochreous with strong pale central line. See couplets 46 and 65.

6.5-9.0mm. May to August. Forewing pale golden brown, markings whitish; basal streak to near middle; dorsal spot usually reaching basal streak; one fascia; three costal and two dorsal strigulae, ill-defined. Thorax brown, paler posteriorly, pale central line absent. Vertex brown. See couplet 58.

6.0-8.0mm. Late May to early August. Forewing shining straw-coloured; fringe with dark cilia-line very faint or absent; markings white: fascia, one costal strigula basally, three distally and three dorsal strigulae distally; basal streak often meeting first costal strigula. Thorax brown, usually with white central line. Vertex brown, whitish posteriorly. See couplet 46.

7.0-9.0mm. May, June and August (in Britain). Forewing pale coppery brown; markings varying from whitish to almost ground colour: fascia, three costal and two dorsal strigulae distally and basal streak, not meeting first costal; fringe with dark cilia-line strong. Thorax ochreous brown, sometimes with fine central line. Vertex pale coppery brown, whitish posteriorly. See couplet 48.

Forewing with basal streak very short or absent.

Forewing with basal streak.

8.0-10.0mm. May to October. Forewing shining brown with silvery-white markings; two costal and two dorsal strigulae. Vertex brownish, greyish white posteriorly.

Forewing occasionally with weak cilia-line.

Early May to mid August. Forewing shining pale brown with two costal and two dorsal strigulae. Vertex pale ferruginous, whitish posteriorly.

May and June (in Britain also in August, September). Forewing shining golden brown with two costal and one or two dorsal strigulae. Vertex pale ferruginous, whitish posteriorly.

7.0-10.0mm. May to late October. Forewing pale reddish ochreous; three fasciae, third sometimes interrupted, and one costal strigula. Vertex pale brownish orange, whitish posteriorly.

Antenna white apically.

7.5-8.5mm. May, June and August. Forewing with two fasciae, one dorsal and two costal strigulae. Vertex brownish orange, whitish posteriorly; thorax shining brownish orange, pale brown anteriorly.

7.5-9.0mm. Late April to mid August. Forewing shining brownish orange with two fasciae, one dorsal and two costal strigulae. Vertex brownish orange.

Late April to early August. Forewing pale golden brown, not shining, with silvery markings: two fasciae, second slightly curved outwardly; two costal (sometimes a barely visible third one) and two dorsal strigulae; first costal and first dorsal strigulae sometimes meeting to form a third fascia. Vertex pale brownish orange.

Early May to mid August. Forewing pale glossy brownish orange with silvery markings: two fasciae, second distinctly curved outwardly; two or three costal and two dorsal strigulae; first costal and first dorsal strigulae sometimes meeting to form a third fascia. Vertex brownish orange.

7.0-9.0mm. Late April to early October. Forewing golden brown with white markings: fascia, three costal and two dorsal strigulae. Vertex ochreous brown. Thorax without pale central line.

5.3-6.7mm. Not known, probably from spring to October. Forewing shining golden brownish orange, sometimes with greyish tinge, in male generally paler than in female; with silvery white markings: fascia, in male three costal and two dorsal strigulae, in female two costal and two dorsal strigulae. Vertex blackish, grey anteriorly. Thorax without pale central line.

May and August (in Britain). Forewing shining golden brown with fascia, three costal and two dorsal strigulae. Vertex dark brown, whitish posteriorly. Thorax with pale central line.

6.5-9.0mm. Late April to early October. Forewing golden, slightly shining, with white, sometimes very pale yellowish markings: fascia, three costal and two or three dorsal strigulae. Vertex golden brown or brown. Thorax with faint pale central line. See couplet 61.

7.0-9.0mm. June to August. Forewing golden brown with reddish sheen in basal half, white markings: fascia, three costal and two or three dorsal strigulae. Vertex brown, whitish posteriorly. Thorax with pale central line.

5.5-8.5mm. May and August (in Britain). Forewing shining brownish orange, white markings: fascia, three costal and two dorsal strigulae. Vertex brown, whitish posteriorly. Thorax with pale central line. See couplet 54.

Thorax without pale central line.

Thorax with or without pale central line.

5.5-7.0 mm. supposedly early May to late August. Forewing shining brown, dorsal area grey and blackish, strigulae silvery, three dorsal strigulae, dark longitudinal streak at one-third from dorsum between first and second dorsal strigula. Vertex black, greyish laterally.

7.0-9.0 mm. early May to early October. Forewing uniform shining golden brown; strigulae white, three dorsal strigulae. Vertex dark brown mixed whitish anteriorly.

5.5-7.0mm. Mid May to early September. Forewing shining dark golden brown; markings silvery white, basal streak curved towards costa. Vertex pale golden brown, whitish posteriorly; frons white, slightly coppery.

6.0-8.0mm. Late May to early August. Forewing shining straw-coloured; markings white. Thorax brown, usually with white central line. Vertex brown, whitish posteriorly. See couplet 28.

The form with five costal strigulae instead of four (f. milleri Povolný & Gregor). See also couplets 26 and 65.

Forewing with basal streak not edged darker.

Forewing with basal streak edged, not fully edged or unedged.

7.0-9.0mm. May, June and August (in Britain). Forewing ochreous brown, strigulae and basal streak from whitish to a slight lightening of ground colour; with apical spot (usually indistinct) preceded by irregular dark line to middle of wing. Vertex shining brown, whitish posteriorly. Thorax sometimes with fine pale central line. See couplet 28.

8.5-10.0mm. May and June. Forewing brownish yellow, slightly reddish, rather matt. Vertex ochreous grey, mixed whitish anteriorly. Thorax with whitish central line.

8.0-9.5mm. Late April to early September. Forewing matt brown, slightly reddish; apical spot if present usually preceded by a more or less distinct dark band to middle of wing or beyond. Vertex reddish brown, paler posteriorly. Thorax with fine pale central line.

7.0-9.0mm. April, May and August to November. Forewing shining yellowish with faintly yellowish markings. Vertex yellowish brown. Thorax without pale median line.

7.0-10.0mm. Late April to mid October. Forewing shining golden yellowish with white markings. Vertex pale brownish orange. Thorax without pale median line.

7.0-10.0mm. Late April, May and August, early September. Forewing pale ochreous with shining silvery markings; basal streak curved towards costa at four-fifth. Vertex pale ochreous, dark anteriorly. Thorax with pale median line.

7.0-9.0mm. April to early August. Forewing brownish golden yellow; markings white; basal streak straight. Vertex brownish. Thorax without pale median line.

5.5-8.5mm. May and August (in Britain). Forewing with basal streak straight. See also couplet 41.

Forewing sometimes with basal area predominantly whitish, resulting in more or less distinct basal streak, but dark edging above always present; basal streak always pointed at end.

Forewing with basal streak blunt or pointed at end.

8.0-9.0mm. May and August (in Britain). Forewing golden ochreous; markings silver white. Vertex white, mixed ochreous anteriorly. Thorax usually with white central line.

6.0-9.0mm. Late April to early September. Very variable species. Forewing with colour ranging from pale brownish orange to dark brown, in female often predominantly whitish in basal half of wing; markings white. Vertex white, greyish anteriorly or wholly grey. Thorax without pale central line. See couplet 15.

6.5-9.0mm. May to August. Forewing pale golden brown; markings whitish; basal streak to near middle, almost unedged (often a few isolated dark scales); dorsal spot usually reaching basal streak; strigulae ill-defined. Vertex brown. See couplet 27.

In P. salicicolella thorax with faint central line.

Forewing with basal streak not dark-edged.

Forewing with basal streak often dark-edged, usually weakly.

8.5-10.0mm. Late April to early September. Forewing slightly shining ochreous or brownish; markings white to yellowish white; first pair of strigulae not meeting, both forming an acute angle; costals and dorsals often indistinct except first pair. Vertex brownish, yellowish brown posteriorly.

7.0-8.0mm. May, June and August (in Britain). Forewing bright pale golden brown; markings white; costals three and four less distinct. Vertex pale brown, whitish posteriorly. Thorax with distinct white central line. See couplet 62.

6.5-9.0mm. Late April to early October. Forewing golden, slightly shining, with white, sometimes very pale yellowish markings: costals three and four usually less distinct. Vertex golden brown or brown. Thorax with faint pale central line. See couplet 40.

See couplet 61.

Vertex brown, whitish posteriorly. Thorax with white central line. The next three species cannot always be separated on the basis of external characters, but the majority of the specimens can be identified using the characters given in the couplets 63 and 64.

6.0-9.5mm. Late April to mid November. Forewing brown, slightly orange; first costal and first dorsal strigulae separate, not touching; basal streak very slender, slightly broadened in distal quarter; dorsal blotch a very narrow white line along dorsum from base to near first dorsal strigula, often interrupted. Vertex orange-brown, white posteriorly.

6.0-8.5mm. April, May and July, August. Forewing brown; basal streak slender, distinctly broadened at two-thirds or three-quarters, dark-edged costally, sometimes indistinct, and rounded apex. vertex ochreous yellow, whitish poterioirly. Midleg with tarsus flecked or banded blackish brown or unmarked. Genitalia in P. spinicolella male with process in middle of vertical margin of valva, absent in P. cerasicolella. The ductus bursae of the female of P. spinicolella tortuous within seventh segment, in P. cerasicolella this tortuosity for the greater part in sixth segment.

6.5-9.0mm. April to early June, August. Forewing brown; basal streak slender, rather irregular, broadened at two-thirds or three-quarters, dark-edged on both sides. Vertex orange-brown, whitish posterioirly. Midleg with tarsus always flecked or banded. For genitalia see P. spinicolella.

7.0-9.5mm. May and August, September. Forewing golden ochreous; white basal streak to near middle; below it a fine white line along dorsum, but not usually reaching first dorsal strigula or base. Thorax shining golden ochreous with strong white central line. Vertex brown, whitish posteriorly. See couplets 26 and 46.

See couplet 17.

7.0-9.0mm. Late May and June. Thorax without pale central line. Vertex brown, often slightly orange, paler posteriorly.

7.5-9.0mm. May and August (in Britain). Thorax without pale central line. Vertex pale brown, lighter posteriorly. Hindleg with tarsus usually banded darker. See couplets 75 and 77.

6.0-8.0mm. May and August (in Britain). Thorax without pale central line. Vertex brownish, paler posteriorly. Hindleg with tarsus indistinctly banded grey. See couplet 78.

See couplet 76.

7.0-9.0mm. Late April to early June, August. Forewing pale golden brown, sometimes dark brown; first costal strigula extended as a fine line along costa towards base, but not reaching base; first dorsal strigula narrowly dark-edged inwardly. Hindleg with tarsus banded dark brown. Vertex pale brown, whitish posteriorly.

6.0-8.5mm. May, early June and August. Forewing ochreous brown, sometimes darker; first costal strigula extending a short distance along costa towards base; first dorsal strigula usually with both sides dark-edged on distal half. Hindleg usually with tarsus marked brownish. Vertex brown, whitish posteriorly.

7.5-9.5mm. Mid April to early October. Sometimes hindtarsus indistinctly dark-flecked. Vertex brown or pale brown, whitish posteriorly.

Forewing with first dorsal only dark-edged outwardly near tip. See couplets 69 and 77.

7.0-9.0mm. Late April to early October. Forewing with first dorsal dark-edged outwardly. Vertex brownish, whitish posteriorly.

6.0-9.0mm. Early April to early October. Forewing distally with scattered brown scales; markings white; basal streak broad, sometimes connected to first dorsal strigula and occasionally other connections between basal streak, first costal and dorsals one and two; second dorsal comparatively large, usually trapezoid; with white dorsal patch beneath basal streak. Vertex brownish orange, whitish posteriorly. See couplet 71.

Forewing variably scattered with dark scales in distal half; markings shining silvery white.

May and August (in Britain). Forewing with basal streak broadest at three-quarters, tapering to pointed apex; first dorsal long, broadly sickle-shaped, sometimes slightly sinuate; second dorsal strigula large and triangular or trapezoid; with white dorsal patch beneath white basal streak. Vertex brownish orange, paler posteriorly. See couplets 69 and 75.

Forewing with basal streak not or only slightly broadened, apex pointed or blunt; second dorsal strigula variable, from small and triangular to large and trapezoid. Vertex brownish, paler posteriorly.

6.0-8.0mm. May and August (in Britain). Forewing with first dorsal long, wider at base, slightly curved and extending to just beyond first costal. Thorax without central line. Hindleg with tarsus indistinctly banded grey. See couplet 69.

6.8-8.0mm. Late April to late September. Forewing with first dorsal long, narrow, strongly angled at apex, extending to beyond end of first costal, but occasionally almost meeting it to form an acute-angled fascia.

10.0-13.0mm. May and June. Frons ochreous yellow; vertex ochreous, mixed dark, paler anteriorly. Labial palpus pale yellow. Forewing with first costal and dorsal spot occasionally meeting to form a fine cross-line, sometimes some fine pale costal strigulae near apex.

9.0-11.0mm. Mid April to early October. Forewing dark grey without purplish gloss, appearing often more white than dark grey basally and towards dorsum; an apical dark grey spot, edged white inwardly by extension of costal white strigula nearest apex (not continued into cilia). Third segment labial palpus occasionally with dark spot or band.

See couplet 88.

9.0-13.0mm. May to July. Forewing dark grey with purplish gloss; costal strigulae white, particularly towards apex white. Form with segment of labial palpus often immaculate. Frons greyish white. See couplet 86.

8.5-11.0mm. May and August to early September. Forewing dark grey without purplish gloss; costal strigulae particularly towards apex pure white. Frons grey. Unicolorous third segment labial palpus occurs occasionally in this species. See couplet 86.

11.0-13.0mm. April, May and July, August (in East Germany). Third segment of labial palpus with black spot outwardly. Forewing with ground colour pale bluish grey; costal strigulae whitish; white spot at three-quarters beneath costal strigulae extended towards termen. Frons white. Vertex greyish white, mixed dark grey anteriorly.

In P. anglicella forewing with blackish apical dot obscurely bounded white inwardly by extension of the most distad pale strigula on costa, but this extension is not continued into the grey cilia.

Third segment of labial palpus with incomplete blackish median band. For rare form with third segment of labial palpus immaculate see couplet 83.

Third segment of labial palpus with dark dot outwardly, occasionally also inwardly. See couplet 83.

Thorax pale ochreous, tegulae brown.

Thorax greyish white, tegulae dark grey.

8.5-10.5mm. April, May and July, August (in East Germany). Forewing with costa rather obscurely strigulated. Thorax pale ochreous, Tegulae brown. Frons dark grey. Vertex whitish ochreous, mixed brown.

9.0-12.0mm. Mid April to early June and early July to late August. Forewing with costa obscurely strigulated. Labial palpus very occasionally immaculate. Frons dark grey; vertex whitish ochreous, mixed brown. See couplet 82.

9.0-14.0mm. Late April to early October. Costa forewing with whitish strigulae from base to apex, albeit more pronounced towards apex and sometimes less distinct in pale forms; ground colour without purplish gloss. Vertex dark ochreous grey.

9.0-11.0mm. Late April to early October. Forewing with whitish costal strigulae often obscure except towards apex; ground colour dark greyish brown with purplish gloss; a blackish grey spot in disc at thee quarters, often followed by a whitish spot. Frons dark grey; vertex pale ochreous, mixed dark brown.

9.0-11.0mm. May to August. Forewing with distinct whitish costal strigulae from base to apex; ground colour with purplish tinge; an elongate blackish grey streak in disc at three quarters, often followed by a whitish spot. Frons grey; vertex whitish, mixed dark brown.

10.0-12.0mm. April, May and July, August (in East Germany). Forewing white with yellowish brown fasciae and spots, all dark-edged. Frons pure white.

8.0-10.0mm. Late April to early October (adult hibernates). Forewing yellowish brown to dark brownish olive; one fascia and outward-oblique costal and dorsal streaks, all white, dark-edged, especially anteriorly. Frons ochreous, whitish beneath.

7.0-9.0mm. May and July, August. Forewing with four or five oblique costal streaks and two dorsal spots. Frons and vertex silvery grey.

7.0-10.0mm. May to August. Forewing with four costal streaks or spots, one apical and three dorsal spots; first costal and dorsal often connected, occasionally also other costals and dorsals connected. Frons silvery white. Vertex leaden metallic.

Labial palpus occasionally somewhat coarsely scaled.

12.0-14.0mm. July to September (adult hibernates). Frons yellowish white, vertex concolorous with forewing.

11.0-13.0mm. July to October (adult hibernates). Frons and vertex pale greyish brown.

10.0-13.0mm. May to August. Forewing comparatively broad, length costa four and a half times greatest width. Frons pale grey, vertex greyish yellow to pale greyish.

9.0-10.0mm. Late April to mid August. Forewing dark brown; five white costal strigulae (second often indistinct); two longitudinal streaks and a dorsal streak, all white. Frons and vertex white.

6.0-9.0mm. Early June to early September. Frons silvery white, vertex shining brown.

8.0-10.0mm. Late April to late August. Forewing with markings dot dark-edged, not sprinkled with whitish, brown-tipped scales.

8.0-11.0mm. July to October, adult hibernates. Forewing with markings variably dark-edged, often sprinkled with whitish, brown-tipped scales. See couplets 116 and 120.

Late May and June (in Southern France). Alien. Forewing sprinkled with pale scales.

Terminal cilia forewing with three reddish brown cilia-lines. See couplet 113.

Terminal cilia forewing occasionally with three very faint dark cilia-lines.

10.0-14.0mm. Late April to late September. Forewing with yellow basal blotch well-defined; terminal cilia pale reddish brown, sometimes with three very faint dark cilia-lines. Thorax golden yellow, tegulae pale purplish brown. Vertex pale purplish brown.

10.0-13.0mm. Late April to mid August. Forewing with yellow basal blotch ill-defined; terminal cilia pale reddish brown, without dark cilia-lines. Thorax and tegulae ochreous. frons pale golden yellow; vertex ochreous, concolorous with thorax.

Forewing with dark spots or parallel pale fascia, sometimes unicolorous without markings.

Terminal cilia of forewing with three dark cilia-lines.

Terminal cilia of forewing with two or three dark cilia-lines or without cilia-lines, but tipped darker.

12.0-16.0mm. Throughout the year. Forewing with costal blotch occasionally suffused darker; costa with three or four small blackish spots; terminal cilia with three dark cilia-lines. Vertex brownish, grading to yellow on frons. See couplet 114.

11.0-16.0mm. October and after hibernation April, May. Costa and dorsum forewing with numerous blackish spots; terminal cilia with three faint dark cilia-lines. Frons and vertex reddish brown or greyish brown, but frons paler, sometimes greyish white beneath. See couplets 113 and 121.

14.0-17.5mm. February to November, adult hibernates. Forewing with costal blotch more often present than in C. elongella, more distinct and darker edged. Frons and vertex variably coloured. Foreleg with tibia blackish grey, at most with faint reddish sheen. See couplet 123.

14.0-18.5mm. March to October, adult hibernates. Frons and vertex variably coloured. Foreleg with tibia bright reddish brown. See couplet 123.

10.0-11.0mm. Early May to early June and early July to mid August (outdoors); occurring in greenhouses, but since about 1997 it can also maintain itself in the open. Forewing with terminal cilia purplish with two dark cilia-lines. Vertex grey, often with purplish tinge; frons pale yellow.

See couplets 108 and 121.

11.0-14.0mm. September to May, adult hibernates (in Britain) ; Dutch adults have been found in July. Forewing ochreous or brown, often with reddish tinge. Frons and vertex pale ochreous to brown. See couplet 104.

See couplet 108.

Forewing unmarked, unicolorous or only with dark spots or dark suffusion; dark spots occasionally fused to a pattern of fasciae.

10.0-13.0mm. Mid April to late September. Forewing yellowish brown. Frons pale brownish grey, vertex darker.

See couplets 101 and 120.

In dark specimens of Caloptilia suberinella this larger costal spot connected with other enlarged spots to more or less form a transverse dark fascia, sometimes a similar fascia at four-fifth.

11.0-14.0mm. July to September and after hibernation in May. Forewing ranging from pale ochreous to brown; fringe with cilia-lines often faint. Frons and vertex concolorous with forewing. Hindleg with trochanter and adjacent areas of coxa and femur white.

14.0-18.0mm. Knowledge of voltinism incomplete, probably similar to C. populetorum. Colour forewing similar to C. populetorum; scattered with blackish scales, dark spots often enlarged and fused; fringe with cilia-lines faint or indiscernible. Frons and vertex greyish brown. Hindleg with trochanter not coloured paler.

Forewing unicolorous paler or darker brown. See also couplets 101 and 116.

14.0-16.0mm. June and from September to April, adult hibernates (in East Germany). Forewing ranging from yellowish to brown and greyish. Frons and vertex concolorous with forewing.

See couplets 109 and 113.

Late June to early October, adult hibernates in Britain and East Germany. Forewing glossy brownish with faint violet sheen, sometimes more or less distinct blackish spots. Frons and vertex concolorous with forewing.

See couplet 110.

See couplet 110.