How to feed Messor structor

Messor structor is a harvester ant from central Europe. Like Messor barbarus it stores seeds, but it needs a real cold hibernation.

Calculate exact amounts for your colony →Based on worker count, brood and temperature. Free, no account.

What does Messor structor 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 DAYSSEEDS
10 (Nanitics)1 prey item every 5 days1 drop (optional)0.1 g / week
50 (Small)3 prey items every 4 days1 drop (optional)0.3 g / week
150 (Growing)8 prey items every 7 days2 drops (optional)0.9 g / week
400 (Established)19 prey items every 7 days4 drops (optional)2.4 g / week

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. Seeds: 1 g ≈ 170 millet seeds ≈ 750 chia seeds; 1 teaspoon ≈ 4 g.

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

November to March, 5–10 °C. Colder than Messor barbarus.

Common mistakes

FAQ

Which seeds should I give Messor structor?

Dandelion, chia, millet, flax, clover, untreated and varied.

How is it different from Messor barbarus?

Messor structor comes from central Europe and needs a colder hibernation (5–10 °C).

Does it need protein without brood?

No: without brood seeds are enough. An insect now and then is optional.

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