| Both males and females have green-black specula, with pale blue patches on the forewing. |
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| The feathers fan out from the forewing into a gently rounded profile, while the forewing itself rises into an arching swell. |
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| Note that the left forewing of the recipient wasp has been bent away from her body by the biter. |
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| Size was assessed by measuring the length from the apex to insertion of the left forewing to the nearest 0.5 mm. |
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| Apparent in flight, the speculum, or wing-patch, is dark iridescent-green, looking black at times, with white on the forewing. |
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| We recorded pronotum length, mean hind femur length, mean forewing length, and mean hindwing length for each individual. |
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| The forewing has only one or two very small brown spots on the basal antenodal cross veins, unlike the extensive post-basal markings of the wings of C. elisa. |
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| The pulses are produced when a forewing strikes a tegular wing-coupler. |
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| The two black spots on the forewing leading edge are much more intensely black than the marginal and submarginal grey bands. |
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| The black discal spot in the centre of the forewing and the orange one on the hindwing may be prominent or virtually absent. |
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| In primitive moths a fingerlike lobe on the forewing overlaps the base of the hind wing. |
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| Light-brown moths with a wingspan of 25-37 mm and two distinct dark-brown bands on the forewing. |
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| Brownish-red with a darker, oblique band across the centre of the forewing. |
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| The posterior angle of the forewing is narrowly divided from the rest of the wing by an irregular, oblique, pale band. |
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| The forewing is greyish with basal, middle and outer brownish patches and the wing span is 25-35 mm. |
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| Many species have a tuft of hair on the trailing edge of the forewing which protrudes upwards at rest. |
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| Females, juveniles, and males in eclipse plumage are mottled brown with orange legs and a green-black iridescent speculum with a blue patch on the forewing. |
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| More advanced groups lack some veins or branches in the forewing and have the hind-wing venation considerably reduced. |
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| It is the only Canadian elfin in which the male does not have a forewing scent pad. |
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| In S. frugiperda the veins of the hindwing are brown and distinct, and in the male forewing the pale orbicular stigma has a pronounced pale 'tail' distally. |
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| The bird-cherry ermine moth has several rows of black dots on its forewing, and a wingspan of 16-25 mm. |
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| The female forewing has two to four pale cream spots on the upperside. |
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| The orange band on the forewing upperside reflects ultraviolet light. |
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| There is a square black spot in the cell on the forewing upperside. |
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| The costa on the forewing was black and thickly overlaid with grayish or pinkish scales. |
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| The Valkyrie is a canard aircraft, equipped with a forewing to prevent the plane from stalling in the air. |
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| The moth has black and creamy-white striped markings on its forewing and a red, orange or yellow hindwing. |
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| As the birds approach, bank and dive to decoys, the outstanding blue patch on each forewing is a dead giveaway as to the identity. |
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