Crematogaster emeryana

This ant nests under stones or logs (or in logs), with brood present in April and July, and sexuals present in nests in July and August. This species appears to be polygynous, with up to 9 dealate females found in a single nest. One colony was nesting together with Lasius sp. and Tapinoma sessile. (Mackay and Mackay 2002)

Identification
This species can be recognized due to the presence of several erect hairs on the pronotal shoulder, in addition to at least one pair on the rear of the mesonotum. (Mackay and Mackay 2002)

Distribution
Arizona and east to Texas, north to Colorado and Utah, south into northern Mexico.

Distribution based on Regional Taxon Lists
Nearctic Region: United States. Neotropical Region: Mexico.



Habitat
Mountain forests, oak forests, riparian canyon forests, grasslands, urban habitats.

Biology
Nevada, Wheeler and Wheeler (1986) - Two colonies were nesting under stones in a deep narrow canyon filled with shrubs and trees.

Nomenclature

 *  emeryana. Crematogaster (Acrocoelia) lineolata subsp. emeryana Creighton, 1950a: 213 (w.) U.S.A.
 * Combination in C. (Crematogaster): Buren, 1968b: 94 (in key).
 * Raised to species: Buren, 1968b: 94 (in key).
 * Senior synonym of marioni: Morgan & Mackay, 2017: 171.
 * marioni. Crematogaster (Crematogaster) marioni Buren, 1968b: 105 (w.) U.S.A.
 * Junior synonym of emeryana: Morgan & Mackay, 2017: 171.

Crematogaster marioni
Holotype worker and numerous paratypes from several nests in either dead manzanita stems or branches or on live oak at Morena Lake, San Diego Co., Calif., W. F. Buren. The species is also represented by numerous specimens collected by Dr. Wm. S. Creighton, which I have also marked as paratypes, from 13 mi. E. of Tecate, Baja California, Mex.; Dripping Springs Camp Ground, Aguatibia Mts., Calif. (3 colonies); Cameron Corners, San Diego Co., Calif.; and Canyon City, San Diego Co., Calif.; all these records from live oaks. I have also marked as paratypes a few specimens from Robertson Creek, Monterey, Calif., and have seen specimens from Santa Barbara, Pasadena, and San Ysidro, Calif. The holotype and a few paratype specimens are to be sent to the National Museum. Other paratypes will be sent to the Museum of Comparative Zoology, American Museum of Natural History, California Academy of Natural Sciences, and the personal collection of Dr. Creighton. I will retain paratypes from each series.