Moved from Micropeza.

Although the 1972 reference by Merritt & James(1) is entitled "The Micropezidae of California", the authors indicated in their first paragraph that the treatment covered all nearctic taxa known to occur west of the Rocky Mountains (at the time of publication).

In that work, this micropezid keys to genus Micropeza (from bases of antennae proximate, and the "extensor" hairs on the posterior edge of the hind tibiae), and to species M. stigmatica (from the lack of substantial black on the thorax and head, the pale antennae and arista, and the disto-median and sub-apical black bands on the femora).

Regarding M. stigmatica, Merritt & James(1) comment that:

"This species differs from all Micropeza in having two distinct black rings on each femur, one disto-median and one sub-apical. The characteristic brown markings of the thorax (fig. 39) and the shape of the claspers (fig.40) will also aid in identification."

Comparing this with Fig. 39 of Merritt & James(1), the pattern on the dorsum of the thorax has more subtle contrast in the photo (and the oblique angle of view obscures things somewhat), but I can see 2 of the 3 vittae shown beyond the suture of the mesonotum in Fig. 39, and 3 of the 4 "dots" shown near the suture.

As a double check, this micropezid went to Neriocephalus stigmaticus in Cresson (1938) (a synonym for Micropeza stigmatica), and is in excellent ageement with Cresson's description there.

Finally, M. stigmatica is recorded from the region surrounding Pinal County in the 1972 "Geographic Distribution of Micropezidae in the Western United States" by Richard Merritt.

Moved from ID Request.

See reference here.