Winged females usually develop later in the season, making it easier for them to travel to new plants. In addition, autumn brings on a phase of sexual reproduction, which produces eggs that survive the winter.
Red goldenrod aphids (Uroleucon nigrotuberculatum) feed on an Early Sunflower (Heliopsis helianthoides). Early-season aphids are generally wingless and don’t lay eggs; instead, they live-birth female nymphs (as seen here), who may also be already pregnant - without male involvement.
Winged females usually develop later in the season, making it easier for them to travel to new plants. In addition, autumn brings on a phase of sexual reproduction, which produces eggs that survive the winter.
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