Britannica Sources used in this answer

Where do Tubulifera thrips place their eggs?

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Detailed illustration of a western flower thrips, Frankliniella occidentalis, showing its elongated yellow-brown body, six legs, and two pairs of fringed wings spread outward. — thrips Western flower thrips (*Frankliniella occidentalis*).

Because females of the suborder Tubulifera lack a sawlike ovipositor, they do not insert their eggs into plant tissue. Instead, they place their eggs in the following locations:

Pushed under bark1
Placed in or between flowers and leaf sheaths1
Glued onto the surfaces of leaves or bark1

In some highly evolved members of the Tubulifera, the eggs may hatch within the female, a process known as ovoviparity.1