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Montane Robber Fly - Laphria janus - female

Montane Robber Fly - Laphria janus - Female
Calypso Falls, Boulder County, Colorado, USA
June 14, 2012
Size: Likely 1-2 cm
Spruce woodlands near falls at about 9000 feet; sorry, photo quality not high, but given habitat, thought this creature might be of interest

Moved from Laphria fernaldi.

From Dr Robert Cannings: This is a female Laphria janus, a boreal species that ranges down the western mountains to Colorado, Utah and Oregon. The abdomen is all orange haired dorsally, except for the first, which is pale yellow. The thorax has the front rather thinly haired, but the rear half is more thickly covered with pale yellow, rather appressed hairs. Legs with mostly black hairs.


Moved from Robber Flies.

not janus. More likely a robust fernaldi.

Boulder Co Laphria
L. fernaldi seems a better match. Per Laphria of Western North America
This species is very common along the Front Range, especially in Colorado and Wyoming. It is also found in the Great basin to the West and in reduced numbers in Oregon, Washington, and Idaho to the Northwest. Its most characteristic feature is the presence of reddish pile on tergites 4 and 5 of the abdomen. This pile entirely covers segment four, and extends along the sides and anterior margin of five. The extent of reddish pile on this beastie, if the website is correct, cinches the ID. Herschel?

Female - Bee-like Robber Fly
Pointed abdomen = ♀

Moved from ID Request.

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