Download high resolution image here.
This ant was attracted to an illuminated white sheet at night at Mt. Wrightson Picnic Area at the end of Madera Canyon Road
during Bugguide Gathering 2013
It's head appears to have a raised collar-like preoccipital margin. That, and the inner margin of its mandible at midlength being moderately convex, keys it to N. pilosus
in Snelling 2007(1)
. However, the author states
photographed at the same event are probably N. harrisi
. Both species are recorded from southern AZ.
This image is a CombineZP
processed stack of 73 images with a 113 µm step taken with a reversed Leitz Focotar-2 50 mm F/4.5
enlarging lens set to F/5.6 + adapter/extension tube + Nikon D300 camera.