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Species Rhyssomatus lineaticollis - Milkweed Stem Weevil

Milkweed weevil - Rhyssomatus lineaticollis Rhyssomatus lineaticollis Another milkweed weevil - Rhyssomatus lineaticollis Weevil - Rhyssomatus lineaticollis Weevil - Rhyssomatus lineaticollis Weevil - Molytinae - Rhyssomatus lineaticollis Beetle - Rhyssomatus lineaticollis  Milkweed Stem Weevil (Rhyssomatus lineaticollis) - Rhyssomatus lineaticollis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Molytinae
Genus Rhyssomatus
Species lineaticollis (Milkweed Stem Weevil)
Rhyssomatus lineaticollis (Coleoptera), are weevils that primarily feed on the stems of A. syriaca. Adults initially feed on the apical leaves and then, after feeding, female weevils walk to lower parts of the stem and chew several sequential holes in the stem, creating a continuous scar. Females lay a single egg per hole and larvae complete development inside the stem while feeding on pith tissue. Oviposition scar length is an accurate predictor of the number of eggs laid by the adult female. (Agrawal, 2005)