Leptothorax pacis

Every Ant Tells a Story - And Scientists Explain Their Stories Here
Jump to navigation Jump to search
Leptothorax pacis
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Crematogastrini
Genus: Leptothorax
Species: L. pacis
Binomial name
Leptothorax pacis
(Kutter, 1945)

Leptothorax pacis casent0003203 profile 1.jpg

Leptothorax pacis casent0003203 dorsal 1.jpg

Specimen labels

This species is a workerless inquiline. Queens live in the nest of a different ant species, have no workers and are entirely dependent on their hosts for food. The queens produce eggs that are cared for and raised to maturity by the host workers.

At a Glance • Workerless Inquiline  




Distribution based on Regional Taxon Lists

Palaearctic Region: Austria, Estonia, France, Germany, Russian Federation, Slovenia, Switzerland (type locality).

Distribution based on AntMaps


Distribution based on AntWeb specimens

Check data from AntWeb


An inquiline ant living within the nests of their host species Leptothorax acervorum, in sticks, pieces of bark and tree stumps in coniferous forests. The species is workerless and apparently host-queen tolerant.

The alate gynes practice female calling outside their natal nest. Mating takes place on the ground, often on top of the nest.

The three species L. pacis, Leptothorax kutteri and Leptothorax goesswaldi all are workerless, permanent parasites of Leptothorax acervorum.





The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • pacis. Doronomyrmex pacis Kutter, 1945: 486, 3 figs. (q.) SWITZERLAND. Kutter, 1950c: 348 (m.). Included in Leptothorax: Heinze, 1998: 195 (combination not stated); combination in Leptothorax: Bolton, 2003: 270. See also: Buschinger, 1972: 169; Kutter, 1977c: 146.



  • n = 26 (France; Switzerland) (Buschinger & Fischer, 1991; Fischer, 1987) (as Doronomyrmex pacis).