Pheidole crassicornis Emery

Subfamily MYRMICINAE Tribe ATTINI Pheidole crassicornis Emery

Pheidole *crassicornis*, full face view of a major worker (click images to enlarge).	Pheidole crassicornis, lateral view of major worker (Baldwin Co., AL) (photo by Joe A. MacGown)
Introduction Pheidole crassicornis is a fairly large soil dwelling species. Species in this species group have scapes flattened at the basally in the majors. This species can be distinguished from others in the group in this region by the lack, or scarcity, of erect hairs on the gaster, petiole and postpetiole, promesonotum, and head of the major. Taxonomic History (from Bolton, 2014) Identification Minor Worker: (from MEM specimens). HL 0.67–0.73, HW 0.53–0.62, SL 0.82–0.93, EL 0.16–0.18, \ Major Worker: (from MEM specimens). HL 1.62–1.84, HW 1.56–1.72, SL 0.92–1.00, EL 0.20–0.25, IHT 0.38–0.44, OHT 0.57–0.65, MeSL 1.47–1.62, PRW 0.86–0.96, PSL 0.08–0.12, PTW 0.24–0.32, PPW 0.34–0.47 (n=6). \ Queen: (from MEM specimens). HL 1.36–1.42, HW 1.58–1.64, SL 0.98–1.00, EL 0.32–0.40, MeOL (median ocellar length) 0.15–0.16, IHT 0.46–0.49, OHT 0.63–0.65, MeSL 2.53–2.55, PRW 1.30–1.60 PSL 0.12–0.15, PTW 0.53–0.55, PPW 0.75–0.80, WL 7.40–7.80 (n=4). \ Biology and Economic Importance Distribution US Distribution: Alabama, Florida, Georgia, Louisiana, Mississippi, and Texas. Literature Cited Links AntWeb Images

Author-Joe MacGown: jmacgown@entomology.msstate.edu
The ant web site was uploaded on 6 March 2003 and was last updated on 7 February 2022 (specific pages may have different uploaded and updated dates)
Drawings and photographs by Joe MacGown (unless otherwise noted) and copyrighted by the Mississippi Entomological Museum

The development of this web site was supported in part by the National Institute of Food and Agriculture, United States Department of Agriculture, under Project No. MIS-012040 and the USDA-ARS Areawide Management of Imported Fire Ant Project (Richard L. Brown, Principal Investigator).