Coenagrion castellani Roberts 1948

Twenty-five new populations of Coenagrion castellani were discovered (17 in southern Latium, 5 in Molise, 1 in Abruzzo and 2 in Campania), and 5 locations previously known from literature in southern Latium and Campania were confirmed, for a total of 30 populations (Tables 1-2, Fig. 1). The sites vary from an altitude of 1 (San Giovanni spring, LT) to 1090 m (Val Fondillo springs, AQ) (Table 1). All 30 sites can be divided into three categories based on habitat type: sunny karstic springs in the foothills, with slowly running waters (21 sites, 83%), coastal rivulets on sandy substrate surrounded by riparian forests (3 sites, 10%), and seasonal streams on limestone soil (2 sites, 7%) (Tables 1-2, Fig. 2). All sites are characterised by abundant helophytic and hydrophytic vegetation and a soft bed substrate (silt, sand or clay). Reproductive activity was recorded in many sites with the observation of couples in tandem (Fig. 4).