Guest Ants

Official Name

Formicoxenus

Size

2–3 mm

Color

Brown-Red Body

Geographical Location

Found in Austria, Denmark, Finland, France, Germany, Great Britain, Italy, Norway, Poland, Sweden, and Switzerland.

Common Household Location

Kitchen, Floor and Pantry

Identifying Characteristics

  • Worker {• Antennal segment count 11 • Antennal club 3 • Palp formula 5,3; 4,3 • Total dental count 5-6 • Spur formula 0, 0 • Sting present }
  • Male {• Antennal segment count 12 • Antennal club 0 in alates; gradual in ergatoids • Palp formula 5,3; 4,3 • Total dental count 0-4 • Spur formula 0, 0}

Official Name

Formicoxenus

Size

2–3 mm

Color

Brown-Red Body

Geographical Location

Found in Austria, Denmark, Finland, France, Germany, Great Britain, Italy, Norway, Poland, Sweden, and Switzerland.

Common Household Location

Kitchen, Floor and Pantry

Identifying Characteristics

  • Worker {• Antennal segment count 11 • Antennal club 3 • Palp formula 5,3; 4,3 • Total dental count 5-6 • Spur formula 0, 0 • Sting present }
  • Male {• Antennal segment count 12 • Antennal club 0 in alates; gradual in ergatoids • Palp formula 5,3; 4,3 • Total dental count 0-4 • Spur formula 0, 0}

Notes

It is known as the shining guest ant because it cohabits with various species of wood ants, including Formica aquilonia and Formica lugubris. The relationships between the Formicoxenus nitidulus and their hosts are poorly known.It is a very small ant, about 2–3 mm long, with a brown-red body, similar in shade to the Formica ants that it nests with, but the body is noticeably shiny. The ants are quickly running on the side of the nest.