Species comparison

Camponotus herculeanus vs Camponotus pennsylvanicus

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

Head to head

Camponotus herculeanus and Camponotus pennsylvanicus compared fact by fact
Camponotus herculeanusCamponotus pennsylvanicus
Keeping
Difficulty
4/7

Beginner

4/7

Beginner

Escape risk
Medium
Medium
Diet
SugarInsects
SugarInsects
Best nests
Ytong nest · Wooden nest · Naturalistic setup
Ytong nest · Wooden nest · Naturalistic setup
Colony
Growth
Moderate
Moderate
Colony size
Reaches 5,000 workers
No data yet
Workers
6–11 mm

majors up to 13 mm

6–10 mm

majors up to 13 mm

Queen
14–17 mm
15–18 mm
Colony founding
Fully claustral

One queen

Fully claustral

One queen

Defense
Bites · Sprays formic acid
Bites · Sprays formic acid
Climate
Nest temperature
18–25 °C
22–27 °C
Nest humidity
50–60 %
50–70 %
Hibernation
5–8 °C

Oct – Mar

5–10 °C

Oct – Feb

Nuptial flights
May – Jun

Hot days · Humid air

Apr – Jul

Hot days · Calm weather

Native range
Europe, Asia, North America
North America

Size to scale

  • Camponotus herculeanus

    Workers · 6–11 mm
    Majors · ≤ 13 mm
    Queen · 14–17 mm
  • Camponotus pennsylvanicus

    Workers · 6–10 mm
    Majors · ≤ 13 mm
    Queen · 15–18 mm
10 mm: both species are drawn at the same scale

Their year side by side

  • Camponotus herculeanus : Hibernation: Oct – Mar, Nuptial flights: May – Jun

  • Camponotus pennsylvanicus : Hibernation: Oct – Feb, Nuptial flights: Apr – Jul

Months in the native range of the species. The weather decides the exact days, and colonies kept indoors can follow a different rhythm.

How to tell them apart

Camponotus herculeanus

Large workers with a black head and gaster and a dull dark red to reddish-black thorax and legs. Compared with Camponotus ligniperda they look stockier and duller, with little or no red on the gaster, and they favor colder, higher and shadier woods, but the two are hard to tell apart by eye with certainty.

  • Tip Keep the nest on the cool side and add only a small warm spot, such as a heat cable under one end. The colony moves its brood to the warmth by itself, and constant heat is not needed for this northern species.
  • Watch out Wooden nests dry out easily. One keeper lost a whole season when colonies in dry wooden nests stagnated and ate their brood, so give every wooden nest a damp chamber or a water supply.

Camponotus pennsylvanicus

Large, all-black workers of many sizes, with pale yellowish to golden hairs lying flat on the gaster, long and dense on the bigger workers. Camponotus herculeanus and western C. modoc have short gaster hairs, and C. herculeanus usually has a dark reddish thorax or legs, while C. chromaiodes often shows red on the thorax, legs or gaster base and C. novaeboracensis has a red thorax and legs.

  • Tip Keep the founding queen in a dark, quiet spot and check on her rarely. Her first clutch is small and takes at least about 60 days to become workers. One keeper who checked a queen daily and moved her between three setups lost the early brood and waited about 87 days for the first worker. Ending the first year with 5 to 30 workers is normal.
  • Watch out Check cotton plugs and water barriers all year, including during the winter rest. The workers chew cotton, soft plastic and plaster, and one keeper found a hibernating colony drowned after it had chewed through the cotton in its test tube. Fluon or talc keeps them in on smooth walls, but oil or petroleum jelly on a vertical wall does not.

More comparisons

Compare
with

Not sure which ant to keep?

Take the 1-minute species finder quiz and get matched with the perfect species for your experience, your space and what you'd love to watch.