On the occurrence of the genus Leptanilla Emery, 1870 in Sardinia

The genus Leptanilla (Hymenoptera Formicidae), represented worldwide by 47 species, shows a very peculiar geographical distribution. It is found in Africa, Spain, Italy, Corsica, Russia, India, Ceylon, Malaysia, Java, Japan and in the southwest of Australia. Currently, no species has been discovered in North and South America. Scarcity of records, mainly due to the difficulty in collecting the female castes, leaves many aspects of Leptanilla biology still poorly known