Ancilla Blue (Euphilotes ancilla)

This is part of the difficult to ID in the field "buckwheat blue" complex. Some current field guides lump this taxon as a subspecies under Dotted Blue (Euphilotes enoptes).
Ancilla Blue (Euphilotes ancilla) Ancilla Blue (Euphilotes ancilla)
Ancilla Blue (Euphilotes ancilla)
Lambs Canyon, Salt Lake Co., UT
16 June 2005
Ancilla Blue (Euphilotes ancilla)
Lambs Canyon, Salt Lake Co., UT
16 June 2005

Ancilla Blue (Euphilotes ancilla) Ancilla Blue (Euphilotes ancilla)
Ancilla Blue (Euphilotes ancilla)
Wasatch Mountain State Park, Wasatch Co., UT
14 July 2014
Ancilla Blue (Euphilotes ancilla)
Wasatch Mountain State Park, Wasatch Co., UT
14 July 2014

Ancilla Blue (Euphilotes ancilla) Ancilla Blue (Euphilotes ancilla)
Ancilla Blue (Euphilotes ancilla)
Wasatch Mountain State Park, Wasatch Co., UT
14 July 2014
Ancilla Blue (Euphilotes ancilla)
Wasatch Mountain State Park, Wasatch Co., UT
14 July 2014

Ancilla Blue (Euphilotes ancilla) ˜
Ancilla Blue (Euphilotes ancilla)
Wasatch Mountain State Park, Wasatch Co., UT
14 July 2014

From left to right:
Ancilla Blue (Euphilotes ancilla), Lupine Blue (Plebejus lupini), Northern Blue (Plebejus ?idas? "atrapraetextus" annetta)
Wasatch Mountain State Park, Wasatch Co., UT
14 July 2014


In western Montana, several species of Euphilotes occur and are extremely difficult if not impossible to distinguish in the field. They most likely are Ancilla Blue (Euphilotes ancilla) and Glaucon Blue (Euphilotes glaucon). Ancilla Blue is part of the Dotted Blue complex, and Glaucon Blue belongs to the Square-spotted Blue complex. Additionally, an undescribed species of buckwheat blue exists that differs in genitalia and, to some extent, host plant but distinguishing field marks remain unknown (S. Kohler, pers. comm.). Some of the photos below may be of that taxon.
Probably Ancilla Blue, possibly Glaucon Blue
Below Mt. Baldy, Missoula Co., MT
28 Apr 2015

Probably Ancilla Blue, possibly Glaucon Blue
Below Mt. Baldy, Missoula Co., MT
4 June 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
30 June 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
30 June 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
2 July 2014
Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
2 July 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
2 July 2014
Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
2 July 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
2 July 2014
Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
2 July 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
10 June 2015
Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
10 June 2015

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
15 June 2015
Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
25 May 2014

Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
30 May 2016

On Eriogonum ovalifolium


Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
30 May 2016
Probably Ancilla Blue, possibly Glaucon Blue
Mt. Baldy, Missoula Co., MT
1 June 2016

Probably Ancilla Blue, possibly Glaucon Blue
Just below Mt. Baldy, ca. 5400' elevation, Missoula Co., MT
2 July 2014

On the right is a mated pair. The left individual is an attempting (unsuccessfully) interloper, which was much smaller than either of the mated pair. These are on Sulphur Buckwheat (Eriogonum umbellatum).

Probably Ancilla Blue, possibly Glaucon Blue
Just below Mt. Baldy, ca. 5400' elevation, Missoula Co., MT
2 July 2014
Probably Ancilla Blue, possibly Glaucon Blue
Just below Mt. Baldy, ca. 5400' elevation, Missoula Co., MT
2 July 2014
Probably Ancilla Blue, possibly Glaucon Blue
Just below Mt. Baldy, ca. 5400' elevation, Missoula Co., MT
2 July 2014

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Created on ... May 5, 2007 | jeffpippen9@gmail.com