October is your last chance to send in pictures to the Great British Riverfly Photography Competition.

A new invasive freshwater shrimp has been found in the West Midlands. Dikerogammarus haemobaphes was found on the River Severn at Tewkesbury, the Bevere near Worcester, and also in two Worcestershire canals.

Online television channel Annandale TV recently spoke to Aileen Smith and Nick Chisholm of the River Annan Trust to learn about their new riverfly monitoring project. 17 volunteers have been monitoring the Annan in Dumfries & Galloway, after attending a RMI workshop in July this year hosted by the trust. 

National Insect Week (NIW) began on Monday 25 June, with events taking place across the UK through to Sunday 1 July. Find fascinating insect facts, follow the NIW blog and get details of all the events on the website. This is a great time of year to head out in search of riverflies, with the added incentive that this year's Riverfly Photography Competition opened this week as part of NIW.

A dedicated monitoring programme has revealed small numbers of the Killer shrimp, Dikerogammarus villosus, in an area of Barton Broad, Norfolk. This is a highly invasive non-native species, currently known only from three other sites in England and Wales. If the shrimp became established and widespread in the UK it could pose a serious threat to native species.