Good or Weevil?

Good or Weevil?

Ceutorhynchus assimilis at Fulbourn Fen (Photo by Mark Gurney)

Mark Gurney shares the highlights of his recent surveys for invertebrates on our reserves

Almost thirty years ago, Mark Gurney was introduced to the world of entomology by Brian Eversham, Chief Executive at the Trust. Mark is now an ecologist who helps people understand and manage habitats for some of our less well-known groups. He likes discovering insects and the places where they live, and has a particular fondness for weevils. Recently he has been visiting some Trust reserves to find out more about the many species we look after that often go undetected:

Gamlingay Wood

The log pile near the entrance attracted some good beetles associated with decaying wood, of which the star was one of the elusive scarlet click beetles, Ampedus quercicola. The Huntingdonshire woods and the New Forest are its headquarters in Britain, but I don’t think it has been found here before, and I was very pleased to see it. Nothing else that unusual on the pile, but a decent selection of nice saproxylic invertebrates. Polydrusus flavipes was my other highlight. This is a scarce weevil that I have only seen once before. It is associated with various broad-leaved trees and shrubs, like most of its relatives, but is much less common.

invertebrates
invertebrates

Sugley Wood

The flower-rich rides had Diplapion stolidum and Microplontus campestris (on Ox-eye Daisy) and two species of Glocianus (on yellow composites). The highlight for me was Acalypta carinata, a lace bug that lives on moss. Its close relative Acalypta parvula is ubiquitous in moss in grassland, but I have never found carinata before.

invertebrates

Fulbourn Fen

This was not a site I had been to before, and it had three surprises in store. The biggest was Squamapion vicinum, a very scarce weevil that lives on Water Mint. I do not know why it is so uncommon, but East Anglia and Anglesey are its strongholds. Next was Neophytobius quadrinodosus from Creeping Cinquefoil, less scarce than the Squamapion, but still an uncommon species. Finally, Ceutorhynchus assimils which was frequent on Charlock in the cattle-grazed field. This is a widespread but uncommon and declined weevil.

invertebrates

We encourage surveys on our reserves and are keen to support any activities that add to our understanding of sites and species. Please get in touch if you are interested in surveying on our reserves.