Page 5 - Berni_1997

A contribution to the history of Bacillus in Sicily

. ...
IT AL Y DISTRICTS
l ) AOSTA V ALLEY Il) UMBRIA
2) PIEDMONT 12) MARCHE
3) LOMBARDIA 13) CAMPANIA
4) TRENTtNO 14) MOLISE
5) VENETO 15) ABRUZZO
6) FRIULI 16) APULIA
7) LIGURIA 17) BASILICA T A
8) EMILIA R. 18) CALABRIA
9) TUSCANY 19) SICILY
IO) LAZIO 20) SARDINIA

Figure 2. Districts of Italy.

of attendant circumstances is itself at risk of extinction. I t is located in just a few habitats
near Palazzolo Acreide, Canicattini Bagni and Floridia, in the province of Syracuse. Each
of these habitats of B. grandii grandii harbours only a small number of specimens and the
human presence represents a continuous threat, especially considering the local custom of
burning or drastically trimming hedges, the only refuge far phasmids. The second major
aspect creating the risk of extinction in B. grandii grandii is the incessant competition with

Phasmid Studies, 6(1): 3