Species comparison

Lasius niger vs Messor barbarus

Side by side: difficulty, size, growth, climate, hibernation and nuptial flights, from the data and sources of each species sheet.

Head to head

Lasius niger and Messor barbarus compared fact by fact
Lasius nigerMessor barbarus
Keeping
Difficulty
2/7

Beginner

Easier1/7

Beginner

Escape risk
Medium
LowerLow
Diet
SugarInsects
SugarInsectsSeeds
Best nests
Sandwich nest · Ytong nest · Acrylic nest
Ytong nest · Acrylic nest · Naturalistic setup
Colony
Growth
Moderate
FasterVery fast
Colony size
No data yet
Reaches 1,000 workers
Workers
3–5 mm

All the same size

3–8 mm

majors up to 14 mm

Queen
8–9 mm
14–17 mm
Colony founding
Fully claustral

One queen

Fully claustral

One queen

Defense
Bites · Sprays formic acid
Bites
Climate
Nest temperature
23–25 °C
21–26 °C
Nest humidity
40–60 %
50–60 %

Seed granaries: 10–40 %

Hibernation
8–12 °C

Oct – Mar

12–16 °C

Oct – Mar

Nuptial flights
Jul – Aug

Hot days · Calm weather

Sep – Nov

After rain

Native range
Europe, Asia
Europe, North Africa

Size to scale

  • Lasius niger

    Workers · 3–5 mm
    Queen · 8–9 mm
  • Messor barbarus

    Workers · 3–8 mm
    Majors · ≤ 14 mm
    Queen · 14–17 mm
10 mm: both species are drawn at the same scale

Their year side by side

  • Lasius niger : Hibernation: Oct – Mar, Nuptial flights: Jul – Aug

  • Messor barbarus : Hibernation: Oct – Mar, Nuptial flights: Sep – Nov

Months for temperate Europe and the Mediterranean. The weather decides the exact days, so flights can come earlier or later where you live.

How to tell them apart

Lasius niger

Small workers that are uniformly dark brown to black with a slightly shiny body, among the commonest ants of gardens, lawns and pavements. Unlike Lasius emarginatus, there is no reddish color on the thorax.

  • Tip Use a soil-based sandwich nest to watch them dig their own tunnels, or a white Ytong nest, where the black workers stand out sharply.
  • Tip In the wild they milk aphids for honeydew, so they go wild for sweet food: keep honey, sugar water or ant jelly on offer and add a little protein, such as Gammarus or small insects, for the brood.

Messor barbarus

Black workers in many sizes, from small minors to majors with an oversized red head that cracks seeds. They walk slowly and clumsily, and they are poor climbers.

  • Tip Give the nest a humidity gradient: dry granaries keep the seeds from sprouting or going moldy, while the brood needs the humid chambers.
  • Tip Seeds alone can feed the whole colony, but a few insects once the colony has grown a bit speed up the growth of the brood.

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