Triorla interrupta
(Macquart, 1834)
Triorla interrupta is a of robber fly in the Asilidae. It is the only North American species in the Triorla, with a second species occurring from Panama to Argentina. The species is considered the most common robber fly in Arkansas and is widely distributed across eastern North America.
Pronunciation
How to pronounce Triorla interrupta: /triˈɔr.la ɪn.təˈrʌp.tə/
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Identification
Males can be identified by the distinctive pattern of abdominal coloration: the first two segments are partially black, followed by two almost wholly black segments. The belongs to the Efferia group of robber flies, characterized by their large size and robust build.
Images
Distribution
Eastern North America. The occurs from the southeastern United States northward, with records from Arkansas, Missouri, and surrounding states.
Similar Taxa
- Efferia speciesSimilar large size and overall gestalt; Triorla was historically considered part of Efferia before being elevated to status
- Proctacanthus speciesBoth are large, impressive robber flies in the nominate Asilinae with similar predatory habits