NOTES ACULEATE ON THE SUFFOLK HYMENOPTERA LIST OF COLEOPTERA REPORT
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Freshwater Invertebrate Recorder’s Annual Report 2002 Unfortunately there was no report on freshwater invertebrate recording in last year’s transactions, so the records detailed below cover both the 2001 and 2002 seasons. I shall concentrate below on invertebrates other than Coleoptera and Odonata, both of which have their own dedicated recorders. During the two seasons the county database has grown by just over 2000 records to 18,100 and the number of sites represented to around 325. This reflects the amount of time which has been invested in both data input and microscope work, but there are still many records to input and tubes of specimens left to identify. Nothing short of early retirement is needed to get up to date! Unfortunately there are still very few freshwater records sent either to the museum, or myself although those that come in are very welcome indeed. Therefore I must take this opportunity to thank those who have contributed records for the database, most of whom are mentioned below, to which I should also add David Nash, Paul Lee and Neil Sherman. Having finished the survey work at Framlingham Mere, a start has been made in recording at Redgrave and Lopham Fen. Over 30 species were quickly taken in the spider pools (though no raft spiders) and, despite some records technically being in Norfolk, the pools and river in the Suffolk parts are looking very promising indeed. Redgrave has provided the first county records for three Cladocera species, Ceriodaphnia reticulata var serrata, Daphnia hyalina and Daphnia hyalina var. lacustris. In addition the species Eurycercus lamellatus is common in both pools and the river and, as reported in my last article, is increasingly taken in a wide variety of habitats and locations in the county. 16 different species of aquatic Heteroptera were recorded here, a list that included both Cymatia bonsdorffii and C. coleoptrata, and also the full trio of Hesperocorixa linnaei , H. moesta and H. sahlbergi. The latter species is by far the commonest being recorded 5 times more frequently than H. linnaei and 12 times more often than H. moesta. Recording all three from a single site is certainly unusual. Another major recording effort in the past two seasons was a ‘tour’ of the River Brett almost from the source to its confluence with the Stour. The species list obtained confirms this as a particularly rich river for the West of the county, putting my own village’s namesake, the Box, to shame even though they join the Stour within a short distance of each other. Six species of Ephemeroptera can be found at some sites on the Brett, and as seen elsewhere the two species Centroptilum luteolum, and C. pennulatum are often found together on this river. Whilst not as common as the Baetis rhodani or Cloeon dipterum the Centroptilum species do seem to be on the increase. Before moving away from the Stour system it may be interesting to note that, although living with a tributary of the River Box flowing through my garden (Hol Brook in fact) and despite my garden stream being rather an over recorded site, I had never found the large mayfly larva of Ephemera vulgata there. So I was surprised to catch not one but three single adult male specimens in display flight over my own lawn. This was in June, July and
Trans. Suffolk Nat. Soc. 39 (2003)