How to feed Myrmecocystus mexicanus

Myrmecocystus mexicanus is a nocturnal honeypot ant from the US Southwest. Some workers, called repletes, store sugar in their swollen abdomen. So it needs a lot of sugar, with prey as a complement.

Myrmecocystus: “replete” workers swollen with sugary liquid, hanging from the nest ceiling.
Myrmecocystus: “replete” workers swollen with sugary liquid, hanging from the nest ceiling. Photo: Greg Hume, CC BY 2.5, via Wikimedia Commons
Calculate exact amounts for your colony →Based on worker count, brood and temperature. Free, no account.
Nuptial flight: summer and early autumn, after rain.Rough guide: the date varies with region and each year’s weather.

What does Myrmecocystus mexicanus eat?

How much to feed

Guidelines for a colony with a moderate amount of brood, at 22–28 °C (72–82 °F):

WORKERSPROTEINSUGAR / 3–4 DAYS
10 (Nanitics)1 prey item every 5 days1 drop
50 (Small)4 prey items every 4 days3 drops
150 (Growing)13 prey items every 3 days8 drops
400 (Established)31 prey items every 3 days21 drops

1 prey item = one insect the size of a fruit fly (2–3 mm). A medium cricket (1 cm) is worth about 50 prey items. 1 drop ≈ 0.05 mL.

These are starting points. If food is left after 24 h, give less; if everything disappears fast and the brood grows, give more. The calculator also adjusts for brood and temperature.

Hibernation

Light hibernation from December to February, at 10–15 °C.

Common mistakes

FAQ

What does the honeypot ant eat?

Mostly sugar (diluted honey, sugar water) and small prey for the brood.

When should I feed it?

In the evening, because the species is mostly active at night.

What is a replete?

A worker that stores sugar in its swollen abdomen to feed the rest of the colony.

Open the calculator for Myrmecocystus mexicanus →Feeding log, journal, growth chart and forecast, shopping list.

Amounts and timings are average guidelines, not rules. Always adjust to what you see in your own colony (leftovers, appetite, brood).