Boreal Laphria Laphria posticata Say, 1824    
Kingdom Animalia   >   Phylum Arthropoda   >   Class Insecta   >   Order Diptera   >   Family Asilidae   >   Genus Laphria   


This northern species can be surprisingly common in forests with a substantial component of pines. Said to be characteristic of white pine (Pinus strobus) forests by S. Bromley (1934) in New England, but in addition, I have found it associated with red pine (Pinus resinosa) and pitch pine (Pinus rigida) logs (B. Coulter, pers. obs.). Evidently closely-related to L. virginica, and mixed pairs have been recorded. Probably replaced by virginica in the south.

There are 6 records in the project database.

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A Boreal Laphria in Baltimore Co., Maryland (5/21/2007). The pronotal bristles on the front of the thorax are yellow in posticata and black in divisor, while the hairs at the rear of the thorax are black in posticata and yellow in divisor. Photo by Steve Collins. (MBP list)

A Boreal Laphria in Prince George's Co., Maryland (6/6/2014). Determined by Ben Coulter/BugGuide. Photo by Barbara Thurlow. (MBP list)

A Boreal Laphria in Penobscot Co., Maine (7/4/2010). Photo by Jim Brighton. (MBP list)

A Boreal Laphria in Charles Co., Maryland (6/14/2020). (c) Frode Jacobsen, some rights reserved (CC BY-NC). Photo by Frode Jacobsen. (MBP list)

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