Linepithema humile

Espadaler, X., 2007, The ants of El Hierro (Canary Islands)., Advances in ant systematics (Hymenoptera: Formicidae): Homage to E. O. Wilson - 50 years of contributions., Memoirs of the American Entomological Institute, 80, pp. 113-127: 117

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Linepithema humile


4. Linepithema humile  HNS  (May r).

(2, w; 8, w, m; 1 5, w; 2 3, w; 26, w; 31, w; 41, w; 44, w; 45, w). The Argentine ant is known from all the Canary Islands (Espadaler & Bernal, 2003). At El Hierro it occupies habitats from next to sea level to one thousand meters, in pine forests. Confronted with the two populations known to exist in North Mediterranean Europe (Giraud et al., 2002), the Argentine ants from El Hierro showed aggressiveness towards the Catalan population and reacted peacefully towards the Main population from mainland Europe. Aggression tests (one to one worker; five replicates) were run with two samples from El Hierro (La Frontera; Mirador de las Playas). I conclude that both samples from El Hierro belong to the genotypic profile of the Main population, the more abundant in Western Mediterranean Europe.