Finding Eggs in the Field > Eggs on Flower Stems
Females of some species of the Anthocharis sara complex prefer to oviposit on the flower stems of host Arabis and other mustards.
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Anthocharis sara Female Oviposits on Arabis
Great photo from Dennis Walker demonstrating where Anthocharis sara complex females prefer to lay their eggs; which usually is on the flower stem. There are sometimes exceptions, however. In Dennis' photo, if you look down the stalk in this photo, there is another whitish A. sara ovum on Arabis perennans.
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Anthocharis julia browningi Ovum
Julia orangetip females prefer to oviposit on the flower stems of rock cresses (Arabis spp.)
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Celastrina ladon echo Ovum
Spring azure egg on host buckwheat (Eriogonum racemosum.) Females do not exclusively oviposit on the flower stems; but also lay eggs on the flower buds and nearby periphery.
