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[EN] Key to the families

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Toelichting

23. LYONETIIDAE

1
Forewing with dark grey hook in apical fringe projecting beyond other cilia; tornal spot of specialized scales absent
2
 
Forewing with dark bars extending from subapical spot to costa and costal cilia.
-
Forewing without dark hook projecting beyond other cilia; tornal spot with slightly arched, elongate metallic or purplish scales
3
 
Forewing with two to four bars of dark cilia in apical fringe; the space between pairs of costal bars filled with yellowish.
 
2 (1)
Forewing with dorsal outward oblique dark reddish brown streak from middle of dorsum
 
9.0-10.5mm. July and September, after hibernation to April (in Central Europe; in Britain univoltine). Forewing shining white; development of the dark reddish brown markings variable, additional spots and streaks sometimes present in dorsal half of wing
-
Forewing without dark streak from middle of dorsum
 
8.0-9.0mm. Late May to late October, the adult hibernates. Forewing usually shining white with markings in distal third; melanic form golden brown, except for the whitish dark barred costal and terminal cilia; intermediate forms occur.
 
3 (1)
Forewing grey, sometimes silvery or bronzy grey
4
 
-
Forewing pure white
6
 
 
4 (3)
Larger species, 6.0-7.8mm. Vertex from rough-scaled to almost smooth-scaled
 
June and July. Forewing without purplish black apical spot; apical fringe with four dark bars, two costal and two terminal (occasionally only three bars).
-
Smaller species, 3.8-5.8mm. Vertex rough- or smooth-scaled
5
 
 
5 (4)
Vertex rough-scaled. Forewing dark silvery grey; apical fringe forewing with four dark bars, two costal and two terminal
 
4.5-5.8mm. May, sometimes also in August (in Britain). Forewing with conspicuous purplish black apical spot.
-
Vertex smooth-scaled. Forewing bronzy grey; apical fringe only with two dark costal bars
 
3.8-5.0mm. July and August. Forewing without large blackish apical spot.
 
6 (3)
Vertex rough-haired. Forewing with dark inner margin of first costal mark extended to tornus
 
6.0-8.0mm. Late April to late August
-
Vertex smooth-scaled. Forewing with dark inner margin of first costal mark reaching only half-way dorsum
7
 
 
7 (6)
Forewing usually with tornal spot costally and basally broadly bordered yellow. Forewing underside usually without yellow apical spot
 
6.0-9.0mm. Late May to early August, one generation.
-
Forewing with tornal spot costally bordered yellow, basally without or with only faint yellow edging. Forewing underside with yellow apical spot
 
6.0-9.0mm. Late April and May, mid July to late August.
 

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