Common Name

Carolina Sphinx

Scientific Name

Manduca sexta

A common moth with a bad wrap but an important purpose. The larvae of this moth are often more recognizable than the adults. Another name for the larvae is Tobacco Hornworm and it is often confused for the Tomato Hornworm. These caterpillars are often considered pests in gardens due to their taste for plants in the nightshade family, including tomatoes. However, the adult moths are very important for pollination, especially of our native orchid species. The caterpillars have a large green body with a pink dorsal “horn” and up to seven oblique whitish lateral lines, edged with black on upper borders. The adults are large and their abdomens usually have 6 pairs of yellow bands. The forewing has indistinct black, brown, and white markings. The hindwing is banded with black and white and has 2 black zigzag median lines.

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Lepidoptera
  • Family: Sphingidae
  • Genus: Manduca
  • Species: Manduca sexta
Habitat

Grassland, Urban

Distribution

Florida to Massachusetts, west through southern Ontario, Michigan, and Minnesota to Colorado and California. Ranges south through Mexico, West Indies, neotropics to Argentina.

Abundance

Abundant

Activity Time

Nocturnal

Diet

Larvae prefer plants in the nightshade family (Solanaceae) including potato, tomato, tobacco, pepper, eggplant, and jimson weed. Adults feed on nectar from deep-throated flowers. from

Behavior

Males are identifiable by their broader antennae and the presence of claspers at the end of the abdomen. Female moths are typically ready to mate one week after eclosion (emergence from pupae), and do so only once. Males may mate many times.

Ecological Role

Moths are important for pollination and their larvae are a source of food for birds and other animals

Conservation Status

Least Concern

Threats & Impacts

Notes

A common biological control for hornworms is the parasitic braconid wasp Cotesia congregata, which lays its eggs in the bodies of the hornworms. The wasp larvae feed internally and emerge from the body to spin their cocoons. Parasitized hornworms are often seen covered with multiple white, cottony wasp cocoons, which are often mistaken for large eggs.