The Diptera of Redgrave and Lopham Fens

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THE DIPTERA OF REDGRAVE AND LOPHAM FENS P . WlTHERS

The insect fauna of the Redgrave and Lopham fen area has been reviewed for certain Orders in the past (e.g. Pierce, 1967 et seq.; George, 1967; Beaufoy, 1969) although none of these authors has given the exhaustive coverage achieved by Pope (1968) who showed the value of using a variety of sampling methods, resulting in an impressive tally of 15-20 thousand specimens, corresponding to 771 species. Since this time, however, very little active recorded entomology has taken place on the fens, and the habitat has changed dramatically, so the value of these past records may be limited. The author has been collecting diptera on the reserve for seven consecutive years, using a variety of methods. These have included sweep-netting, Malaise- and water-trapping, Carrion traps and the rearing of larvae. As it is not proposed to continue systematic surveying on the reserve, the records obtained are here presented, with comments on species of particular interest, as a basis for future work. The nomenclature follows Kloet and Hincks (1976), except in the family Sciomyzidae, where changes of Rozkosny and Elberg (1978) are followed. Collectors who have contributed records are indicated by initials; all other records are the author's captures. N o attempt is made to assign these data to a particular grid Square or county. (G = W. S. George H = M. Hocken) Tipulidae: Tipula (Lunatipula) lunata L., Orimarga juvenilis (Zett.),H H Gonomyia (Ellipteroides) lateralis (Macq.) Psychodidae: Sycorax silacea Curtis, Panimerus albifacies (Tonn.), Psychoda parthenogenetica Tonn. Culicidae: Culiseta (Culiseta) annulata (Schrank). Chironomidae: Monopelopia tenuicalcar (Kieff.), Trissopelopia longimana (Staeg.), Cricotopus (Isocladius) sylvestris (Fab.), Metriocnemus atratulus ( Z e t t . ) , Paralimnophyes hydrophilus (Goet.), Smittia aterrima (Mg.), S. contingens (Walker), S. leucopogon (Mg.), S. pratorum ( G o e t . ) , Chironomus dorsalis auctt., nec Mg., Cryptocladopelma edwardsi (Krus.), Micropsectra atrofasciata Kieff., Paratanytarsus austriacus Kieff., Gymnometriocnemus brumalis (Edwards). Anisopodidae: Sylvicola fenestralis (Scop.), S. punctatus (Fab.) Bibionidae: Bibio anglicus Verrall, B. clavipes Mg., B. ferruginatus (L.), B. hortulanus (L.), B. johannis (L.), B. lanigerus Mg., B. marci (L.), B. nigriventris H a i . , B. varipes Mg., Dilophus febrilis (L.). Stratiomyidae: Beris chalybeata (Forst.), B. clavipes (L.), B. geniculata Curtis, B. vallata (Forst.), Nemotelus nigrinus Fall., Chloromyia formosa (Scop.), Microchrysapolita (L.). Rhagionidae: Chrysopilus cristatus (Fab.), Rhagio lineola Fab., R. scolopacea (L.), R. tringarius (L.).

Trans. Suffolk Nat. Soc. 21


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The Diptera of Redgrave and Lopham Fens by Suffolk Naturalists' Society - Issuu