Lasius casevitzi

This species is endemic to Corsica where it is a common species. It does not occur in xerothermous grassland unlike other members of the L. paralienus complex and prefers semi-arboreal habitats and dry open forest. Nests are in soil, under trees or under stones. It is absent from the coastal environment and from elevations above 1100 m. The altitudinal extremes within 50 records were 23 m and 1100 m, with the majority of nests found between 300 m and 800 m. Alates were not observed in the nests during collecting in July and August. The ants behave aggressively during disturbance of the nest by the collector.

Distribution
L. casevitzi is clearly a Corsican endemic. Due to its comparably strong isolation, this Mediterranean island has many endemic insect species with rather strongly deviating characters. Among ants these are Temnothorax melas, Temnothorax corsicus, Formica corsica and Plagiolepis delaugerrei.

Distribution based on Regional Taxon Lists
Palaearctic Region: France.

Nomenclature

 *  casevitzi. Lasius casevitzi Seifert & Galkowski, 2016: 54, figs. 6-9 (w.) FRANCE (CORSICA).

Type Material

 * Three paratype workers with same site labeling as the holotype, stored in Muséum National d’Histoire Naturelle Paris.
 * Three paratype workers from the holotype nest and four paratype workers from another nest at the holotype locality labeled "FRA: 42.440°N, 8.868°E, 687 m Corse: Bonifatu, leg. Galkowski 2015.07.12 -2" in Senckenberg Museum für Naturkunde Görlitz.
 * Three paratype workers from the holotype nest and four paratype workers from another nest at the holotype locality labeled "FRA: 42.440°N, 8.868°E, 687 m Corse: Bonifatu, leg. Galkowski 2015.07.12 -2" in Senckenberg Museum für Naturkunde Görlitz.