Polydrusus partitus
This record describes Polydrusus partitus (species). Recorded family: Curculionidae. Recorded order: Coleoptera.
Identification and Appearance
last key couplet: Upper surface with green and brown scales; elytra obliquely fasciate (Champion, 1911) Type Locality: Mexico, Oaxaca (Hoge).
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Curculionoidea
- Family
- Curculionidae (Snout and Bark Beetles)
- Subfamily
- Entiminae
- Tribe
- Polydrusini
- Genus
- Polydrusus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
adventive to small area nr. Baton Rouge, LA, native to Mexico. iNat comment per Robert Anderson: “ Polydrusus partitus is known only from a small area around Baton Rouge, Louisiana. The earliest specimens collected were those by Anne and Henry Howden in 2002 and the most recent in 2010 although there have been no records since and a visit to the area in May 2024 failed to find any specimens. The species was likely established in the area as it had been found at multiple collecting localities and with collection records spanning a period of over a decade at some of these localities. These here are the first records I’ve heard of since 2010. How this Mexican species was introduced is not known.”
Seasonal Activity
Mar-Apr (based on 3 obs.)
Additional species information
Species notes from the sources
Etymology: Polydrusus partitus Champion, 1911
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Polydrusus partitus. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Frequently Asked Questions About Polydrusus partitus
What is Polydrusus partitus?
Polydrusus partitus is a species in the family Curculionidae, within the order Coleoptera.
How do you identify Polydrusus partitus?
last key couplet: Upper surface with green and brown scales; elytra obliquely fasciate (Champion, 1911)
Where is Polydrusus partitus found?
Range: adventive to small area nr. Baton Rouge, LA, native to Mexico. iNat comment per Robert Anderson: Polydrusus partitus is known only from a small area around Baton Rouge, Louisiana. The earliest specimens collected were those by Anne and Henry Howden in 2002 and the most recent in 2010 although there have been no records since and a visit to the area in May 2024 failed to find any specimens. The species was likely established in the area as it had been found at multiple collecting localities and with collection records spanning a period of over a decade at some of these localities. These here are the first records I’ve heard of since 2010. How this Mexican species was introduced is not known.
When is Polydrusus partitus active?
Polydrusus partitus: seasonal activity - Mar-Apr (based on 3 obs.).