Litoprosopus futilis
(Grote & Robinson, 1868)
palmetto borer moth, cabbage palm caterpillar
Litoprosopus futilis is a in the Erebidae, commonly known as the palmetto borer moth or cabbage palm caterpillar. The species is found in North America, where its caterpillars develop on palm trees. Mature larvae leave plants to pupate, sometimes entering human structures where they incorporate carpet fibers into their silken cocoons. The species is considered a minor nuisance in urban areas rather than a significant pest.
Pronunciation
How to pronounce Litoprosopus futilis: /ˌlaɪtoʊˈprɒsəpəs ˈfjuːtɪlɪs/
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Images
Distribution
North America
Behavior
Mature caterpillars crawl off trees to find sites, sometimes entering buildings. High winds may dislodge caterpillars by peeling palm bracts from trunks, sending attached caterpillars flying. Larvae incorporate carpet fibers into silken cocoons when pupating indoors. Caterpillars are capable of delivering a noticeable bite when handled.
Human Relevance
Considered a nuisance in urban areas when caterpillars enter homes to pupate. May cause minor damage to carpets from fiber removal for cocoon construction. Frequently encountered in Tucson, Arizona and surrounding areas where ornamental fan palms are common.
Similar Taxa
- Litoprosopus coachellaSimilar and cause confusion; L. coachella is frequently referenced in sources discussing 'palm flower moth' or 'palm budworm' caterpillars in the southwestern United States, but L. futilis is the valid name for the occurring in that region