Species comparison

Crematogaster scutellaris vs Lasius emarginatus

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

Head to head

Crematogaster scutellaris and Lasius emarginatus compared fact by fact
Crematogaster scutellarisLasius emarginatus
Keeping
Difficulty
6/7

Intermediate

Easier3/7

Beginner

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

All the same size

3–5 mm

All the same size

Queen
7–9 mm
7–9 mm
Colony founding
Fully claustral

One queen

Fully claustral

One queen

Defense
Bites · Smears venom
Bites · Sprays formic acid
Climate
Nest temperature
21–25 °C
21–27 °C
Nest humidity
50–60 %
50–60 %
Hibernation
8–12 °C

Oct – Mar

5–8 °C

Oct – Mar

Nuptial flights
Aug – Oct
Jun – Aug
Native range
Europe, North Africa
Europe

Size to scale

  • Crematogaster scutellaris

    Workers · 3–5 mm
    Queen · 7–9 mm
  • Lasius emarginatus

    Workers · 3–5 mm
    Queen · 7–9 mm
10 mm: both species are drawn at the same scale

Their year side by side

  • Crematogaster scutellaris : Hibernation: Oct – Mar, Nuptial flights: Aug – Oct

  • Lasius emarginatus : Hibernation: Oct – Mar, Nuptial flights: Jun – Aug

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

Crematogaster scutellaris

Workers with a red head, a dark body and a heart-shaped gaster that they lift above their head when disturbed. In the wild you will often find them in dead trees and old wood.

  • Tip A wooden nest is the natural choice for this species: they love nesting in wood, and a wooden nest needs no watering and very little maintenance.
  • Tip Keep honey on hand, because they love it: a small drop also gives a newly founded queen the energy she needs, without any protein.

Lasius emarginatus

Workers and queens have a clearly reddish thorax between a dark brown head and gaster, which sets them apart from the all-black Lasius niger. They are small, busy ants that dig complex tunnel systems in soil.

  • Tip Because the colony grows fast, the brood needs a lot of protein: keep insects like crickets, worms or fruit flies coming alongside the sugar water.
  • Tip A Ytong nest suits it well: it holds moisture, and the white surface contrasts with the dark head and gaster of the workers, so they are easy to watch.

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