Most common throughout the southern and gulf coast states, this caterpillar is easily recognizable due to its distinct green hue, vertical lines trailing down each side, and its “horn” located on the posterior of its abdomen. Sexta has mechanisms for selectively sequestering and secreting the neurotoxin nicotine present in tobacco Sexta is a common model organism, especially in neurobiology, due to its easily accessible nervous system and short life cycle. Scientific name manduca quinquemaculata, manduca sexta (most common) hosts homworms feed primarily on solanaceous plants These, include tobacco, tomato, eggplant, pepper, potato, and certain weeds Tobacco and tomato plants are preferred for oviposition
Symptoms the larvae consume large amounts of foliage and 2 or 3 large larvae can virtually defoliate even a large plant Manduca sexta undergoes two generations per year in northern parts of its range, three or more in the south, including louisiana The life cycle requires 30 to 50 days to complete, depending on season, with warmer temperatures speeding up the process. Carolina sphinx moth/tobacco hornworm (manduca sexta) the carolina sphinx moth, or tobacco hawk moth, is a part of the sphingidae family indigenous to different parts of the united states, central america, and the caribbean islands This species is more popular as tobacco hornworm, a name by which its larva is called. Manduca anatomy & life cycle manduca life cycle
The adult looks much different than the larva and pupa. Manduca sexta larvae undergo four or five instars, gradually increasing in size to about 8 cm (~3 in) in length in the final instar (deel 1999, encyclopedia of life 2017) The tobacco hornworm looks very similar to tomato hornworm, manduca quinquemaculata (figure 5), and their range and host plants can overlap.
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