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[EN] Key to the families

[NL] Familiesleutel

Toelichting

16. ARGYRESTIIDAE

1
Forewing unicolorous or nearly unicolorous, without markings
2
 
Forewing usually shining bronzy gold, brownish or whitish, sometimes with traces of markings, but these are never longitudinal.
-
Forewing with markings
 
Forewing sometimes whitish, yellowish or slightly purplish with two longitudinal streaks, occasionally indistinct.
 
2 (1)
Forewing deep dark purplish brown or ferruginous brown
3
 
-
Forewing golden, bronzy, whitish, yellowish or greyish
4
 
 
3 (2)
Vertex pure white
 
Form with forewing unicolorous ferruginous brown with faint purplish tinge. Flagellum ringed white and blackish brown, scape white. Frons shining white. See also couplet 49.
-
Vertex pale ochreous
 
Form with forewing unicolorous deep dark purplish brown. Flagellum ringed whitish yellow and dark brown, scape ochreous. Frons shining ochreous white. See also couplet 43.
 
4 (2)
Forewing shining greenish brassy golden, pale golden or deep dark golden
5
 
-
Forewing not or hardly shining; pale ochreous, pale greyish violet, pale straw yellow or creamy white
8
 
 
5 (4)
Smaller species, 8.0-9.0mm
 
Late April to mid July. Forewing shining greenish golden. Flagellum weakly ringed white and greyish brown, scape ochreous. Frons yellowish white, vertex pure white.
-
Larger species, 9.0-13.5mm
6
 
 
6 (5)
Forewing coppery with greenish gloss. Vertex reddish brown to ferruginous
 
9.0-13.5mm. Late May to early June. Flagellum ringed white and purplish brown, scape ochreous. Frons reddish brown.
-
Forewing shining metallic pale golden or deep reddish golden. Vertex from pure white to ochreous, without reddish tinge
7
 
 
7 (6)
Flagellum distinctly ringed whitish and dark brown (in worn specimens less distinct), some sub-terminal segments white
 
Unicolorous form (f. splendida Reutti). Forewing pale golden. Vertex pale yellowish to ochreous; scape whitish to pale ochreous. See also couplet 54.
-
Flagellum unicolorous brown or indistinctly ringed white and brown, sometimes partly ringed
 
Unicolorous form. Forewing deep dark golden. Vertex pure white, occasionally pale ochreous; scape pale ochreous. See also couplets 41 and 54.
 
8 (4)
Vertex ochreous to ferruginous
9
 
-
Vertex white, whitish or ochreous white
 
 
9 (8)
Scape silvery white
 
9.0-14.0mm. May to July (in Britain). Forewing slightly shining pale grey to ochreous grey, elder specimens tending to become more yellowish. Frons silvery white; vertex ochreous to ferruginous. Flagellum weakly annulated white and pale brownish grey. Tho
-
Scape yellowish
 
8.0-11.0mm. Mid May to early July. Forewing somewhat shining pale grey, especially females (and in general elder specimens) more ochreous rather than grey. Frons shining creamy white; vertex ochreous to ferruginous-yellow. Flagellum ringed white and brown
 
10 (8)
Forewing creamy white. Vertex pure white
 
9.0-12.0mm. Form with unicolorous forewing, only a few blackish scales near apex. Flagellum annulated white and blackish brown; scape white. Frons yellowish white. See also couplets 47 and 56.
-
Forewing pale ochreous brown, pale straw yellow or pale greyish violet. Vertex whitish, beige or pale ochreous yellow
 
 
11 (10)
Forewing pale ochreous brown with faint reddish brown suffusion between disc and apex. Vertex whitish
 
8.0-10.0mm. Late April, May. Flagellum pale ochreous, weakly ringed brown. Frons white. Thorax ochreous yellow.
-
Forewing pale straw yellow or pale greyish violet
 
 
12 (9)
Larger species, 9.5-10.5mm. Forewing pale straw yellow
 
Late May, June. Frons and vertex pale ochreous yellow. Flagellum ringed white and brown. Thorax yellowish grey.
-
Smaller species, 7.0-9.0mm. Forewing pale greyish violet
 
Late July to early September. Frons shining brassy white; vertex ochreous white. Flagellum weakly ringed ochreous and brown. Thorax shining ochreous grey. See couplet 38.
 
13 (1)
Forewing white (sometimes suffused pale purplish brown) with two golden or pale golden longitudinal streaks extending from base to between one-third or three-fifth
 
-
Forewing marked and coloured otherwise
 
 
14 (13)
Forewing pale greyish violet; both longitudinal golden streaks extending from base to three-fifth, often ill-defined; without further golden markings
 
See couplet 36.
-
Forewing white, often suffused pale purplish brown ; longitudinal golden streaks from base to one-third or one-half, sometimes only one streak extending to three-fifth; with additional golden markings
 
 
15 (14)
Flagellum distinctly annulated white and blackish brown
 
7.0-9.0mm. Early June to mid August. Forewing white, suffused pale purplish brown. Frons shining brassy white; vertex white. Thorax white, tegulae golden ochreous.
-
Flagellum whitish, not annulated or with rings hardly discernible
 
7.0-9.0mm. Late May to early August. Forewing white with a few brown scales near apex. Frons and vertex white. Thorax white, tegulae golden ochreous.
 
16 (13)
Forewing with white, yellowish or silvery dorsal streak, uninterrupted for at least basal two-fifth of dorsum
 
-
Forewing without well-defined pale dorsal streak
 
If occasionally dorsum forewing paler, one or more darker dorsal spots present in basal half.
 
17 (16)
Forewing with white dorsal streak continuous to tornus
 
F. aurivittella Haworth. See also couplets 31 and 53.
-
Forewing with pale dorsal streak not extending to tornus, but interrupted or terminated by dark fascia
 
Pale dorsal streak in forewing occasionally not completely interrupted.
 
18 (17)
Forewing shining dark purplish brown with metallic reflections; dorsal streak silvery white or occasionally shining pale yellowish
 
8.0-10.0mm. Early June to early August. Forewing with broad almost vertical median fascia, slightly darker than rest of wing; white dorsal streak before dark fascia with basal three-quarters distinctly narrower than distal fourth. Frons and vertex whitish
-
Forewing not shining with metallic reflections
 
 
19 (18)
Forewing with dorsal streak yellowish white to ochreous white
 
10.0-14.0mm. Mid May to early July. Forewing dark brown with purplish reflections; dorsal streak before dark fascia with basal three-quarters distinctly narrower than distal fourth; an outwardly oblique blackish brown fascia, not reaching costa or interru
-
Forewing with dorsal streak pure white
 
 
20 (19)
Forewing with dorsal streak not continued beyond dark median fascia
 
10.0-13.0mm. Late May to mid August (in Central Europe). Forewing dark violet brown; dorsal streak broadened distally, tornal part sometimes represented by pale shade; a broad blackish brown median fascia. Frons white; vertex pure white. Flagellum ringed
-
Forewing with dorsal streak continued beyond dark median fascia
 
 
21 (20)
Forewing with pale dorsal streak interrupted by a dark fascia, at least distinct to half-way wing
 
-
Forewing with pale dorsal streak interrupted by a dark spot
 
Forewing with dark spot interrupting pale dorsal streak not clearly continued into a fascia; sometimes dark interruption incomplete.
 
22 (21)
Forewing with basal half above white dorsal streak almost unicolorous dark; dorsal streak from base to dark fascia of equal width; dark fascia steep
 
9.0-12.0mm. Mid May to early July. Forewing purplish greyish brown. Frons yellowish white; vertex white. Flagellum ringed yellowish white and pale brown, sometimes more distinctly on medial segments; scape whitish. Thorax white, tegulae pale brown.
-
Forewing with basal half above white dorsal streak paler towards costa; dorsal streak before dark fascia with basal three-quarters distinctly narrower than distal fourth; dark fascia curved outwards
 
 
23 (22)
Forewing with dark median fascia pronounced, curved outwards and meeting or nearly meeting costa at three-fifth to two-thirds; between costa and dark basal streak (edging pale dorsal streak costally) usually predominantly brown
 
10.0-12.0mm. Late May to early September. Forewing brown, somewhat ferruginous, towards costa suffused creamy. Frons creamy, vertex white,. Flagellum ringed white and blackish; scape white. Thorax white, tegulae golden brown.
-
Forewing with dark median fascia becoming ill-defined as it curves towards apex, meeting costa at four-fifth; between costa and dark basal streak predominantly creamy
 
9.0-12.0mm. Mid June to early September. Forewing usually predominantly creamy, somewhat shining; often suffused brownish, particularly in apical quarter. Frons shining yellowish white; vertex pure white. Flagellum ringed white and blackish; scape white.
 
24 (21)
Forewing ochreous, somewhat shining, towards costa ochreous white; white dorsal streak ill-defined
 
10.5-14.0mm. Late July to early October. Frons yellowish white, vertex white or whitish. Flagellum ringed white and dark brown; scape white. Thorax white, tegulae brownish.
-
Forewing dark purplish brown, usually with purplish reflections; white dorsal streak well-defined
 
 
25 (24)
Forewing with white dorsal streak from base to one-third, usually tapering; costal strigulae ochreous yellow
A. albistria (part)
 
9.0-11.0mm. Late June to early August. Forewing ferruginous brown with some purplish reflections particularly in apical area; dorsal streak beyond dark interruption indistinct, ochreous, not white. Frons shining white, vertex white. Flagellum ringed white
-
Forewing with white dorsal streak from base interrupted half-way, not tapered; costal strigulae white
 
10.0-13.0mm. July and August. Forewing dark purplish brown with purplish reflections; white dorsal streak continued distinctly beyond dark interruption. Frons shining white, vertex white. Flagellum ringed white and dark brown; scape white. Thorax white, t
 
26 (13)
Forewing with ground colour shining dark purplish brown with metallic reflections.
 
Specimens with reduced pale dorsal streak forewing. See couplet 42.
-
Forewing with ground colour golden, white or creamy
 
 
27 (26)
Forewing golden with white or whitish golden markings or the reverse
 
-
Forewing white or creamy, usually with brown or dark brown markings
 
 
28 (27)
Forewing golden with three straight pure white fasciae
 
8.0-9.0mm. Early May to early June. Frons and vertex white. Flagellum ringed white and shining brown; scape white. Thorax and tegulae coppery.
-
Forewing marked otherwise
 
 
29 (28)
Forewing with costal area unicolorous whitish golden
 
10.0-13.0mm. Late May to early July. Forewing whitish golden; markings golden: dorsal spot at one-third connected with basal streak, outwardly oblique streak from middle of dorsum and tornal spot. Frons shining white; vertex ochreous white. Flagellum ring
-
Forewing with costal area golden with white markings, occasionally costal area pure white
 
 
30 (29)
Thorax and tegulae ochreous golden. Forewing with white fascia in distal half, occasionally interrupted
 
10.0-12.0mm. Late May to early October. Forewing typical form white with three golden fasciae: first near base, second widely furcate towards costa, third terminal, enclosing two white terminal spots. F. literella Haworth with white costal area, go
-
Thorax and tegulae white. Forewing usually without white fascia in distal half
 
10.0-12.0mm. Late May to early September. Forewing typical form golden with one white fascia at one-third; one basal, three costal and one tornal spot, all white. For unicolorous form see couplet 31, for f. aurovittella Haworth see couplet 41. In a
 
31 (27)
Forewing without distinct dark median fascia, but strigulated dark or forewing only with dark incomplete basal streak
 
-
Forewing with dark median fascia, curved or angulated, sometimes interrupted or connected with other dark markings
 
 
32 (31)
Forewing unicolorous creamy, except for traces of brown basal streak
 
F. ossea Haworth. Forewing with some brown scales near apex. See couplets 34 and 47.
-
Forewing white, strigulated dark brown
 
 
33 (32)
Forewing with distinct fine and small strigulae in variable numbers
 
8.0-11.0mm. Mid May to early August. Forewing often with diffuse brownish basal and terminal streaks. Frons whitish; vertex white, mixed darker anteriorly. Flagellum whitish, ringed dark brown, often paler towards apex or unringed beyond two-thirds; scape
-
Forewing with strong strigulae, in distal half reticulated; strigulae at dorsum enlarged to two or three spots
 
7.0-10.0mm. Mid May to late June. Frons and vertex whitish. Flagellum ringed white and brown to apex; scape white. Thorax and tegulae white.
 
34 (31)
Smaller species, 6.0-10.0mm
 
-
Larger species, 10.0-13.0mm
 
 
35 (34)
Thorax and tegulae ochreous. Forewing shining ochreous with brown markings
 
7.0-10.0mm. Mid May to mid June. Forewing with three irregular and often incomplete fasciae. Frons and vertex white. Flagellum ringed white and brown; scape yellowish white.
-
Thorax and tegulae white. Forewing shining white in basal half, yellowish white in distal half; with brown markings
 
6.0-10.0mm. Early June to early August. Forewing with basal half almost unmarked; brown fascia just beyond middle, interrupted at three-quarters; apical fourth of wing with interconnected brown markings. Frons and vertex white. Flagellum ringed white and
 
36 (34)
Forewing white, somewhat creamy in costal half; markings brown, slightly golden; fascia extending to half of wing
 
11.0-13.0mm. Late May to early August. Forewing with dorsal spot at one-quarter, often connected with base along fold; median fascia often connected with markings in distal half of wing. Frons shining ochreous; vertex white. Thorax and tegulae shining whi
-
Forewing white (also costal half); markings greyish brown; fascia often reaching costa
 
10.0-12.0mm. Late May to early August. Forewing with small or obsolete dorsal spot at one-quarter, not connected with wing base; fascia distinct, often incomplete or interrupted near costa. Frons shining ochreous white; vertex white. Flagellum ringed whit
 

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