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Canna leaf roller refers to two different Lepidoptera species that are pests of cultivated cannas. Caterpillars of the Brazilian skipper butterfly ( Calpodes ethlius ), also known as the larger canna leaf roller, cut the leaves and roll them over to live inside while pupating and eating the leaf. [ 1 ]
Puccinia thaliae is the causal agent of canna rust, a fungal disease of Canna. Symptoms include yellow to tan spots on the plant's leaves and stems. Initial disease symptoms will result in scattered sori (clustered sporangia), eventually covering the entirety of the leaf with coalescing postulates.
Cannas are largely free of pests. However, in the eastern and southern United States , plants sometimes fall victim to the canna leaf roller moth , with the resultant leaf damage, while not being fatal to the plant, can be most distressing to a keen gardener's eye.
Calpodes ethlius, the Brazilian skipper, larger canna leafroller or canna skipper, is a butterfly of the family Hesperiidae. It is found in the United States from southern Florida and southern Texas , south through the West Indies , Mexico , and Central America to Argentina .
In the adult form, it eats leaves of many crops, including squash, cucumbers, soybeans, cotton, beans, and corn. Adult beetles lay eggs in the soil near a cucurbit plant. In a lifetime, females can lay between 150-400 eggs. However, there have been cases in which females have surpassed this quota, with some laying a total of 1,200 eggs. [7]
Leafhoppers mainly are herbivores, but some are known to eat smaller insects, such as aphids, on occasion. A few species are known to be mud-puddling, but as it seems, females rarely engage in such behavior. Many species are also known to opportunistically pierce the human skin and draw blood but the function of such behaviour is unclear.
Canna indica, commonly known as Indian shot, [2] African arrowroot, edible canna, purple arrowroot, Sierra Leone arrowroot, [3] is a plant species in the family Cannaceae.It is native to much of South America, Central America, the West Indies, and Mexico.
Umbonia crassicornis, commonly known as the thorn bug, is a widespread member of the insect family Membracidae, and an occasional pest of ornamentals and fruit trees in southern Florida. The body length of the adult is approximately 10 millimetres (0.39 in).