Laphria posticata
Say, 1824
Boreal Laphria
Laphria posticata is a of in the , commonly known as the Laphria. The Laphria includes species known for effective , with Laphria posticata occurring in northern regions of North America. Robber flies in this genus are aerial that capture in .
Pronunciation
How to pronounce Laphria posticata: //ˈlæf.ri.ə ˌpɒs.tɪˈkeɪ.tə//
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Identification
Laphria are distinguished from other -mimicking by their thick (not thin at the , unlike Mallophora). Laphria posticata specifically may be distinguished from by geographic distribution and subtle morphological features, though precise diagnostic characters require examination.
Images
Distribution
Recorded from Vermont and other parts of the United States; the specific epithet 'posticata' and ' Laphria' suggest association with northern or boreal regions of North America.
Behavior
Members of the Laphria are known to perch on vegetation, spot small flying from these vantage points, capture them in mid-air, and return to a perch to feed. The serves dual purposes: deterring potential and allowing closer approach to that are attracted to flowers.
Ecological Role
Aerial of small flying , particularly small . As a mimic, it participates in complex ecological interactions involving predator avoidance and deception.
Similar Taxa
- MallophoraAlso contains -mimicking , but distinguished by hairier bodies and thin on the (Laphria has thick antennae throughout)
- Syrphidae (flower flies)Many are also and mimics, but are distinguished by shorter , different , and lack of the predatory perching characteristic of
More Details
Mimicry and taxonomy
The Laphria has undergone taxonomic revision. Some formerly placed in Laphria have been moved to other genera. The in this genus is considered among the most effective in .
Data limitations
Detailed information specific to Laphria posticata is sparse in the provided sources. Much of what is known about the is inferred from -level characteristics or from better-studied .