25-4-2026 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

The Goldwing moth (Synthymia fixa) is a small, specialized moth known for its striking, hidden coloration and limited habitat range in southern Europe and North Africa. It belongs to the Erebidae family, specifically within the subfamily often referred to as underwing moths. 

Here are key facts about the Goldwing moth (Synthymia fixa):

Physical Characteristics

Appearance: They are small, with a wingspan of only 37–40 mm. The forewings are typically brown, providing excellent camouflage when at rest.

Hidden Colors: When disturbed, they reveal bright orange or golden hindwings. This sudden flash of color is a defense mechanism intended to surprise predators.

Appearance in Flight: They are often described as small brown moths that appear bright orange when flying in the countryside. 

Flight Time: They are primarily seen in late spring, particularly April and May.

Day-Flying: While many moths are nocturnal, Goldwings can be seen flying during the day, particularly when disturbed from their resting spots.

Habitat: They prefer warm regions and are found in the Maltese islands, parts of southern Europe, and North Africa. 

Host Plant: The caterpillars feed exclusively on Bitumen Vetch (Bituminaria bituminosa), which is also known as Pitch Clover or Silla tal-mogħoż in Malta.

Habitat Association: Due to their specialized diet, the moths are found in close proximity to patches of Bitumen Vetch. 

Distribution: While common in certain Mediterranean areas, they are not a resident British species, with only a single, historic report of one being caught in Devon in 1937.

Visibility: In good years, they can be seen in large numbers fluttering through patches of their host plant in the Maltese countryside. 

20-4-2026 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

Synthymia is a genus of moths of the family Noctuidae. It contains only one species, Synthymia fixa, The Goldwing, which is found in southern Europe and North Africa.

S. fixa F. (= monogramma Hbn.) (48 i). Forewing ash grey in the male, darker, slightly greenish grey in the female the outer half of wing suffused with brownish, the whole speckled with black; orbicular stigma oval, grey in a whitish ring, placed vertically at the edge of the grey basal space; reniform also vertical, an elongate figure of 8, white with dark grey centres; space between them crossed by a deep brown band, sometimes velvety brown in cell, the median vein showing white across it; inner and outer lines brownish, ill-defined; the inner waved, nearly vertical, the outer sinuous edged by grey and on the costa whitish; subterminal line thick, whitish; fringe dark-mottled; hindwing orange, deeper in female than in male; the base diffusely dark; terminal border olive brown, broad at apex, with traces of a submarginal line on inner margin; in the male more fuscous tinged, with traces of outer and submarginal lines; in the ab. griseofusa ab.nov. (= ab. 2. Hmps.) the whole of the hindwing is fuscous. Larva dark green, the dorsum lighter; dorsal and subdorsal lines pale yellow, edged with dark green; lateral stripe white, broad, with dark upper edge; head small, yellowish; thoracic plate black; anal plate brown. The wingspan is 37–40 mm.

7-5-2025 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

Synthymia is a genus of moths of the family Noctuidae. It contains only one species, Synthymia fixa, The Goldwing, which is found in southern Europe and North Africa.

Forewing ash grey in the male, darker, slightly greenish grey in the female the outer half of wing suffused with brownish, the whole speckled with black; orbicular stigma oval, grey in a whitish ring, placed vertically at the edge of the grey basal space; reniform also vertical, an elongate figure of 8, white with dark grey centres; space between them crossed by a deep brown band, sometimes velvety brown in cell, the median vein showing white across it; inner and outer lines brownish, ill-defined; the inner waved, nearly vertical, the outer sinuous edged by grey and on the costa whitish; subterminal line thick, whitish; fringe dark-mottled; hindwing orange, deeper in female than in male; the base diffusely dark; terminal border olive brown, broad at apex, with traces of a submarginal line on inner margin; in the male more fuscous tinged, with traces of outer and submarginal lines; in the ab. griseofusa ab.nov. (= ab. 2. Hmps.) the whole of the hindwing is fuscous. Larva dark green, the dorsum lighter; dorsal and subdorsal lines pale yellow, edged with dark green; lateral stripe white, broad, with dark upper edge; head small, yellowish; thoracic plate black; anal plate brown. The wingspan is 37–40 mm.

Adults are on wing from April to July. There is one generation per year.

The larvae feed on the flowers of Psoralea bituminosa.

2-5-2025 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

Synthymia is a genus of moths of the family Noctuidae. It contains only one species, Synthymia fixa, The Goldwing, which is found in southern Europe and North Africa.

Forewing ash grey in the male, darker, slightly greenish grey in the female the outer half of wing suffused with brownish, the whole speckled with black; orbicular stigma oval, grey in a whitish ring, placed vertically at the edge of the grey basal space; reniform also vertical, an elongate figure of 8, white with dark grey centres; space between them crossed by a deep brown band, sometimes velvety brown in cell, the median vein showing white across it; inner and outer lines brownish, ill-defined; the inner waved, nearly vertical, the outer sinuous edged by grey and on the costa whitish; subterminal line thick, whitish; fringe dark-mottled; hindwing orange, deeper in female than in male; the base diffusely dark; terminal border olive brown, broad at apex, with traces of a submarginal line on inner margin; in the male more fuscous tinged, with traces of outer and submarginal lines; in the ab. griseofusa ab.nov. (= ab. 2. Hmps.) the whole of the hindwing is fuscous. Larva dark green, the dorsum lighter; dorsal and subdorsal lines pale yellow, edged with dark green; lateral stripe white, broad, with dark upper edge; head small, yellowish; thoracic plate black; anal plate brown. The wingspan is 37–40 mm.

Adults are on wing from April to July. There is one generation per year.

The larvae feed on the flowers of Psoralea bituminosa.

5-6-2022 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

https://www.inaturalist.org/taxa/325638-Synthymia-fixa

2-6-2021 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

https://www.inaturalist.org/taxa/325638-Synthymia-fixa

 

4-5-2020 MONTE CORONA, VALENCIA - GOLDWING MOTH (Synthymia fixa)

Synthymia is a genus of moths of the family Noctuidae. It contains only one species, Synthymia fixa, The Goldwing, which is found in southern Europe and North Africa.

Forewing ash grey in the male, darker, slightly greenish grey in the female the outer half of wing suffused with brownish, the whole speckled with black; orbicular stigma oval, grey in a whitish ring, placed vertically at the edge of the grey basal space; reniform also vertical, an elongate figure of 8, white with dark grey centres; space between them crossed by a deep brown band, sometimes velvety brown in cell, the median vein showing white across it; inner and outer lines brownish, ill-defined; the inner waved, nearly vertical, the outer sinuous edged by grey and on the costa whitish; subterminal line thick, whitish; fringe dark-mottled; hindwing orange, deeper in female than in male; the base diffusely dark; terminal border olive brown, broad at apex, with traces of a submarginal line on inner margin; in the male more fuscous tinged, with traces of outer and submarginal lines; in the ab. griseofusa ab.nov. (= ab. 2. Hmps.) the whole of the hindwing is fuscous. Larva dark green, the dorsum lighter; dorsal and subdorsal lines pale yellow, edged with dark green; lateral stripe white, broad, with dark upper edge; head small, yellowish; thoracic plate black; anal plate brown. The wingspan is 37–40 mm.

Adults are on wing from April to July. There is one generation per year.