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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

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Previous events


Species Rhynchophorus cruentatus - Palmetto Weevil

LRGV Palmetto Weevil, dorsal view - Rhynchophorus cruentatus - male Cocklebur Weevil??? - Rhynchophorus cruentatus Rhynchophorus cruentatus Snout - Rhynchophorus cruentatus long nose beetle - Rhynchophorus cruentatus Palmetto weevil - Rhynchophorus cruentatus Palmetto Weevil - Rhynchophorus cruentatus - male Black and red beetle - Rhynchophorus cruentatus
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)
No Taxon (Series Cucujiformia)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Dryophthorinae
Tribe Rhynchophorini
Genus Rhynchophorus
Species cruentatus (Palmetto Weevil)
Other Common Names
Giant Palm Weevil
Explanation of Names
Rhynchophorus cruentatus (Fabricius 1775)
cruentatus 'blood-stained'
19-31 mm, our largest weevil(1)[Cite:185010]
from all-black to nearly all-red with a variable black pattern(1)(2)

The rostrum of males is covered with tiny bumps, in females it is smooth and shiny
Coastal se. US (SC-FL-TX)(1)
Adults found throughout the year in FL but usually more noticeable in the late spring and early summer(3)(2)
Hosts include many palms (Arecaceae), but larvae are esp. destructive to cabbage palm: they tunnel the trunk, may kill the growing point, and cause the top of the palm to fall off(3)(2)
Life Cycle
Multiple generations can occur; life cycle takes ~3 months under optimal conditions (2).
Eggs are laid in the bases of leaves or in wounds in a dying host palm and hatch in ~3 days. Larvae have tend to feed primarily on the soft tissue surrounding the apical meristem. Mature grubs migrate to the periphery of the stem or petioles, build a cocoon from palm fibers and pupate. The adult emerges in a few weeks and may immediately break free of the cocoon or spend several days within the cocoon. The entire life cycle (egg to adult) takes ~84 days. Adults may live for several weeks (up to 26 weeks in captivity)(3)
Internet References
Fact sheet (Weissling & Giblin-Davis 2015)(3)