Walking through Warwick Gardens the other week I noticed something amiss. It took a while to realise that the silver birch tree which trailed its beautiful leafy branches over the fence in the Football Quarter had been chopped down. In its place was a view of the house which had previously had been obscured. My heart sank as this was the tree where I first discovered Orientus ishidae, the leafhopper which caused so much excitement in the bug world and subsequently put Warwick Gardens on the entomological map. But why? After talking with the homeowner whose garden the tree was in, she explained that she “wanted more light in my garden”. She asked if it was a problem as she had spoken to the council who had given her permission to cut it down. Well what could I say? Its not my tree, or even my park, and the tree was growing in her garden… BUT it was the possible host plant for a rare insect, as well as a family home to birch catkin bugs, birch shield bugs, mottled shield bugs, parent bugs and southern oak bush-crickets. It’s a real habitat loss and I am deeply saddened, but it is also a lesson about education. After our conversation the homeowner said that if she had known about the insects living there she would have just pruned the tree.
Orientus ishidae has been spreading through the UK and its host plant has yet to be established. In Cambridge one was found on wisteria, in hopping distance of echinops, honeysuckle, cotoneaster, lavender. I have been finding our nymphs living on the ivy which grows adjacent to birch tree, and every year I see them expanding – last year we had a record 10 nymphs. Now I will have to wait until August before I know whether they are breeding on the ivy or just hopping over from the birch tree to bask in the sun. If it is the latter I fear the loss of a very beautiful insect in our park. Only time will tell.