Pterocolus
Say, T., 1831
thief weevils
Species Guides
1- Pterocolus ovatus(thief weevil)
Pterocolus is a of thief weevils in the Attelabidae, containing approximately 16 described . The genus is characterized by kleptoparasitic , wherein members exploit the leaf nests constructed by other weevils rather than building their own. The most studied species, Pterocolus ovatus, has been documented in Florida where it parasitizes the leaf-rolling weevil Homoeolabus analis. The genus was established by Thomas Say in 1831.
Pronunciation
How to pronounce Pterocolus: /ˌpterəˈkɒləs/
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Identification
Members of Pterocolus can be distinguished from other attelabid weevils by their kleptoparasitic lifestyle and association with the leaf rolls of other . Pterocolus ovatus specifically is recognized by its relationship with Homoeolabus analis, though precise morphological diagnostic features for the are not detailed in available sources.
Images
Distribution
Documented from Florida, USA (Pterocolus ovatus). The likely has broader distribution in North America given its historical description, but specific range data for most is not available.
Host Associations
- Homoeolabus analis - kleptoparasite ofPterocolus ovatus exploits leaf rolls constructed by this leaf-rolling weevil for its own
Behavior
Kleptoparasitic: members of this have been observed exploiting leaf rolls constructed by other weevil rather than constructing their own nesting structures. This has been documented in Pterocolus ovatus, which utilizes the leaf rolls of Homoeolabus analis.
Human Relevance
Minimal economic or agricultural impact; Pterocolus ovatus and related are not considered significant pests. The kleptoparasitic interaction with leaf-rolling weevils has minor effects on plant damage.
Similar Taxa
- HomoeolabusLeaf-rolling weevils that construct the nests exploited by Pterocolus; distinguished by active nest-building versus kleptoparasitism
- Attelabidae (other genera)Other attelabid weevils typically construct their own leaf rolls or nests; Pterocolus is distinguished by its reliance on pre-constructed nests of other
More Details
Taxonomic note
placement has varied: some sources list Pterocolus in Attelabidae, while older classifications placed it in Rhynchitidae. Current consensus places the in Attelabidae, Pterocolinae.
Species diversity
counts vary between sources: Wikipedia cites approximately 16 described species, while iNaturalist reports about 7. This discrepancy likely reflects taxonomic revisions and varying treatment of synonyms.