@inbook {1800, title = {Compound nests and mixed colonies of ant species (Hymenoptera, Formicidae) in Sofia, Bulgaria}, booktitle = {L. Penev, J. Niemel{\"a}, D. J. Kotze \& N. Chipev (Eds.). Ecology of the City of Sofia. Species and Communities in an Urban Environment}, year = {2004}, pages = {423{\textendash}428}, abstract = {

Seven nests of coexisting ant species in the city of Sofia and its vicinity were discovered. Five of
these were reported from Zapaden park, one from Knyaz Borisova Gradina and one from Vladaja
village. Two of the nests represented mixed colonies probably with temporary parasitic interaction
between species of the genus Lasius. The compound nests included species from the genera Lasius,
Leptothorax, Myrmica and Formica. Solenopsis fugax was found in lestobiotic interaction with two species
of the genus Lasius within one of the mixed colonies.

}, keywords = {ants, Bulgaria, compound nests, Formicidae, mixed colonies, social interactions}, author = {Antonova, Vera} } @inbook {1793, title = {A Faunistic Investigation of the Ants (Hymenoptera, Formicidae) in the City of Sofia}, booktitle = {L. Penev, J. Niemel{\"a}, D. J. Kotze \& N. Chipev (Eds.). Ecology of the City of Sofia. Species and Communities in an Urban Environment}, year = {2004}, pages = {417-422}, publisher = {Pensoft Publishers}, organization = {Pensoft Publishers}, address = {Sofia-Moscow}, abstract = {

A two-year-long investigation of the myrmecofauna of five parks in the city of Sofia (Boris Gar\­den, Hunting Park, South Park, West Park and North Park), resulted in the collection o f 31 species from 12 genera in 4 subfamilies. Eighteen species were herpetobionts, six were dendrobionts, five were geobionts and two were stratobionts. The zoogeographical structure of the studied ant commu\­nities is as follows: Transpalaearctic - 15 species, Amphipalaearctic - 5, Euro-West-Siberian - 4, Euro-Caucasian - 3, South-European - 2 and Mediterranean - 2.

}, keywords = {Bulgaria, Formicidae, urban communities}, author = {Lapeva-Gjonova, Albena and Atanasova, Maria} }