Hammerschmidtia ferruginea

Summary of 2006 survey work

• All key sites visited for the first time since 2000
• Individual management reports are completed or are being completed for key sites – these to be passed to owners
• The amount of suitable trees available for Hammerschmidtia larvae is higher than we have recorded
• Estimated of larval numbers are the highest we have recorded – almost 4x the 2000 figure
• The current amount of fresh dead wood in the system is high – but action is needed to ensure that best use is made of it for Hammerschmidtia
• At present only a small % of the population is in logs created by active management
• With a small amount of cutting this year there is the potential for further population growth in the next 4-5 year period

The trapping / mark / release study is already producing a significant amount of new information on the autecology of this species which in future can be incorporated into management actions.

Estimated Hammerschmidtia population size in Scotland between 2000 and 2006

year           sites                  suitable trees                    est. population

2000              7                              27                                    295

2003              6                              28                                    525

2005              6                              15                                    325

2006              8                              28                                   1115