Ectophasia crassipennis Diptera:Tachinidae A Tachinid fly

Ectophasia picture 1 Ectophasia picture 2 C.I. distribution

Ectophasia crassipennis

Ectophasia crassipennis was first found in Guernsey in1996. Since then it has become more and more common every year. It has now been found in Jersey, Alderney and Sark as well and is often seen feeding on flowers. The species has been spreading North in Europe in recent years and is expected to reach the U.K. soon. Since this is a large and impressive fly it is believed that this is a genuine immigrant to the islands, rather than a species that was previously overlooked. Taken together with several other species that have appeared in recent years this is probably an indicator of climate change.

Little is known of the biology of this species. Like others in the subfamily Phasiinae of the Tachinidae the larvae of this fly are probably parasitic in Shield Bugs.

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