Liometopum
Velvety tree ants and water loss.
Western US tree ants where humidity and temperature affected worker survival in a laboratory study.
L. occidentale and L. luctuosum laboratory survival research and genus overview; not a tested humidity protocol.
Example photograph · Liometopum occidentale · workerPhoto: Madeleine Claire · Source · CC BY 4.0Full original frame; modified: resized and converted to WebP. No retouching. Not your colony or an identification reference.Example species photograph · not an identification reference · not to scaleHumidity mattered in the laboratory
Hoey-Chamberlain and Rust exposed workers of L. luctuosum and L. occidentale to different temperatures and relative humidity. Survival of both species fell as temperature rose and increased with higher humidity. L. luctuosum survived better overall.
Source: Hoey-Chamberlain & Rust (2014) · Survivorship and water loss in two Liometopum
In your setup
Treat these as experimental conditions for workers, not a household target. Keep water available, record measured humidity and temperature, and note any worker losses with dates.
Two species, different ranges
The same study describes L. occidentale as a lowland species and L. luctuosum as restricted to mountain coniferous forests in the southern part of its range, both in the western United States.
Source: Hoey-Chamberlain & Rust (2014) · Survivorship and water loss in two Liometopum · AntWiki · Liometopum
In your setup
Record the species and collection region with your identification confidence. A genus-level label does not settle which conditions apply.
Record observations without predicting a flight
In your setup
A winged ant at a nest, a flying swarm and a queen on the ground are different observations. Record the local date, approximate area and identification confidence. This guide does not provide a regional flight forecast.
Build a record for this colony
In your setup
Log dated food responses, reservoir and containment checks, and worker and brood estimates. Mark estimates as estimates and leave unknown facts blank. These notes do not fill in or alter your saved colony profile.
Before acquiring or moving ants
Consult the library’s movement guidance and official sources and the authorities relevant to your location.
Sources and review
Research statements link to their sources. “In your setup” contains practical keeper suggestions, not findings tested for every species. Source check: 2026-10-20.
- Hoey-Chamberlain & Rust (2014) · Survivorship and water loss in two Liometopum
Primary laboratory study of worker survival at different temperatures and relative humidity.
- AntWiki · Liometopum
Genus overview and literature summary.
Keep your own field notes.
Record care, dated counts and what you observe. Species and counts can stay blank when you do not know them.
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