... domi-nance of Norway spruce 67.8 %) (C 199 6). e Norway spruce dominates in both studied re-gions, however other tree species as larch (Larix sp .), beech (Fagus sp .), pine (Pinus sp .), oak ... Hemero-bius pini (Figs. 1a,b) began to appear in the mid of April. e occurrence increases at the end of May what corresponds with the observation of H and V (200 2) in spruce forests of ... 2005a,b) and B et al. (199 7) in Bohemia and C (1995a), C and Z (199 5), Š (1995a, 1997, 1998, 1999a, 200 3), Š and H (199 5), H and V (200 2) in...