Finding Caterpillars > Swallowtail Pads
Late instar swallowtails belonging to the glaucus group, prefer to create an obvious silk pad on the leaf where they rest.
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Papilio multicaudatus pusillus
Two-tailed swallowtail fifth instar caterpillar resting on its silken pad that seems unique to glaucus-group swallowtails.
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Silken pads of two swallowtails
Silken pad of both Papilio multicaudatus (left) and Papilio eurymedon (right); both taken on Prunus virginiana from Fairview, Camas County, Idaho.
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Fourth instar Western Tiger Swallowtail Caterpillar
Papilio rutulus fourth instar caterpillar resting on silken pad on host Aspen (Populus tremuloides).
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P. multicaudatus 5th instar pad
Silken pad of a two-tailed swallowtail constructed on a choke cherry leaf.
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P. multicaudatus 5th instar pad
Photo #2.
