Insects Feeding on Various Parts
of Milkweeds (Asclepias spp.)

Common Name  Scientific Name Plant Parts 
Milkweed Longhorn Tetraopes basalis  Larvae bore into stems & roots, adults eat foliage & flowers 
Red Milkweed Beetle Tetraopes tetrophthalmus Larvae bore into stems & roots, adults eat young leaves, buds, & flowers
Western Milkweed Beetle Tetraopes femoratus Larvae bore into roots, adults eat young leaves, buds, & flowers
Swamp Milkweed Leaf Beetle Labidomera clivicollis Eats foliage & flowers
Milkweed Stem Weevil Rhyssomatus lineaticollis Larvae feed on pith of stems, adults suck juices of stems
Large Milkweed Bug  Oncopeltus fasciatus  Eats developing seeds, seedpods, & flowers 
Small Milkweed Bug Lygaeus kalmii  Eats developing seeds, seedpods, & flowers
Milkweed Leaf-Miner Fly Liriomyza asclepiadis Larvae tunnel through leaves
Monarch  Danaus plexippes  Larvae eat foliage, buds, & flowers, adults suck nectar from flowers 
Milkweed Tussock Moth  Enchaetes egle  Larvae eat foliage
Unexpected Cycnia  Cycnia inopinatus  Larvae eat foliage 
Delicate Cycnia  Cycnia tenera  Larvae eat foliage 
Yellow Milkweed Aphid Aphis nerii Sucks juices from upper stems & leaves
Pale Milkweed Aphid* Aphis asclepiadis Sucks juices from upper stems & leaves
Variable Milkweed Aphid* Myzocallis asclepiadis Sucks juices from lower leaves
Eastern Flower Thrips Frankliniella tritici Sucks juices from flowers
Milkweed Ladybird Beetle Brachyacantha ursina Predator; feeds on aphids feeding on milkweeds

*This common name has been invented by the author.

NOTE: The insects of this table are known to feed on one or more
Asclepias spp. (Milkweeds)