Current View: All Antweb
Change View
Cite this page

Citing AntWeb


To cite this page, please use the following:

· For print:      Citation: AntWeb. Version 8.75.4. California Academy of Science, online at Accessed .

· For web:

Species: Crematogaster (Crematogaster) ashmeadi   Mayr, 1886 

Download Data

Current Valid Name:

Taxonomic History (provided by Barry Bolton, 2022)

Crematogaster ashmeadi Mayr, 1886d PDF: 463 (w.m.) U.S.A. (Virginia, Florida). Nearctic. Primary type information: Type-material: lectotype worker (by designation of Morgan & Mackay, 2017 PDF: 77). Type-locality: U.S.A.: Florida (Ashmead), Florida (Pergande) (by restriction of Creighton, 1950a PDF: 206). Type-depository: NHMW. Secondary type information: Paratype-material: 36 paralectotype workers, 6 paralectotype males. Paratype-locality: same as for lectotype. Paratype-depository: NHMW. Type notes: 1) Designated lectotype is from Virginia, not from the type-locality nominated by Creighton (Florida). 2) Other paralectotype localities: Virginia (Pergande), Georgia (Pergande). AntCat AntWiki HOL

Taxonomic history

Lectotype designation: Morgan & Mackay, 2017 PDF: 77.
// Distribution


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Bahamas, United States
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Nearctic, Neotropical

Distribution Notes:

SE, north along the Mississippi to St. Louis


Habitat: Dry-mesic to moist, remnant wooded areas, including those with highly degraded understory and ground layer, but whose old trees are still intact, also thickets and edges of old fields. Nests are in dead wood, often that of living woody plants.

Natural History: C. ashmeadi nests above ground and forages mostly in tree canopies and on lianas, in columns up and down tree trunks and vines to gain access to low vegetation. In Forest Park in St. Louis, the arboreal habitat of this species has allowed it to survive the depredations of Tetramorium tsushimae. Like all Crematogaster, this species feeds heavily on the secretions of extrafloral nectaries and honeydew-excreting hemipterans. Workers may also drink fluids from bird droppings on foliage, carrion and other protein-rich tidbits. Sexuals are reared in early summer.

Specimen Habitat Summary

Found most commonly in these habitats: 2 times found in pine/palmetto flatwoods, 5 times found in Mixed hardwood forest, 3 times found in Suburban with wide-spaced, 3 times found in oak-pine woodland, 1 times found in Hardwoods in lawn, 1 times found in pine/oak managed forest, 2 times found in Sandy beach, 1 times found in oak woodland, 2 times found in Pine woodland, 2 times found in Mixed hardwood fores, ...

Found most commonly in these microhabitats: 16 times nest in twig above ground, 4 times on tree trunk, 1 times ex dead pecan branch on ground, 1 times in dead pine knot, 1 times ex dead twig of woody shrub, 2 times diurnal forager, 1 times dead twig pine, 2 times dead branch, 2 times on boardwalk, 2 times in gall of laurel oak, 1 times in bamboo, ...

Collected most commonly using these methods: 13 times search, 10 times direct collection, 2 times hand collected, 1 times beating vegetation (1 hour), 1 times Winkler.

Elevations: collected from 2 - 335 meters, 68 meters average

Collect Date Range: collected between 1937-04-12 and 2018-05-15

Type specimens: syntype of Crematogaster ashmeadi: casent0902144, casent0919694; type of Crematogaster ashmeadi: focol1506-1, focol1506-2

See something amiss? Send us an email.