NOTES ON THE SUFFOLK LIST OF COLEOPTERA: 8 FOURTEEN SPECIES NEW TO THE SUFFOLK LIST

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NOTES ON THE SUFFOLK LIST OF COLEOPTERA

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NOTES ON THE SUFFOLK LIST OF COLEOPTERA: 8 FOURTEEN SPECIES NEW TO THE SUFFOLK LIST WITH SIGNIFICANT RECORDS FROM THE YEAR 2000 DAVID R. NASH This paper discusses 14 species of beetle which should be considered new to Suffolk for the Index to these Transactions; records of seven of these are reported here for the first time whilst details of seven others which have been published relatively recently in the national literature are presented, with additional records for these species if available. These species are asterisked. Noteworthy records from 2000 are also reported. The national status is given, following Hyman (1992; 1994) for terrestrial species and Foster (2000) for aquatic ones. All records are allocated to vice-county (v.c. 25, East Suffolk; v.c. 26, West Suffolk) and National Grid references are provided, with those assigned by me to earlier records being placed in square brackets. All records are my own except where indicated. Unless specifically mentioned, there are no Suffolk specimens of any of the species discussed in the Morley/Doughty collection at Ipswich Museum. DYTISCIDAE *Hydrovatus clypealis Sharp IUCN LOWER RISK near threatened /Scarce A This small reddish coloured water beetle occurs in lowland muddy ponds and ditches with marginal vegetation. It was believed absent from East Anglia until C. M. Drake discovered it on 11 May 1988 at Blythburgh, East Suffolk (TM4475) and sent the record to the national recording scheme for water beetles (Foster, 1990). *Hygrotus nigrolineatus (von Steven) IUCN LOWER RISK (Nationally scarce list A)/Scarce A This water beetle is found in man-made silt ponds of recent origin and is classed as a “fugitive� species by Nilsson & Holmen (1995) i.e. one that quickly colonises new pools and then dies out after only a few years. Its European range has expanded considerably since 1970. It was added to the British list by Carr (1984) as Coelambus nigrolineatus but, following Nilsson & Holmen (loc. cit.), Coelambus is here once again considered a subgenus of Hygrotus. Following the original capture in a gravel pit in Kent, the species next turned up at a mercury vapour moth Current distribution of trap being operated over the night of Hygrotus nigrolineatus (von Steven) 2/3 July 1986 at Foxhole Heath (TL737774) in the West Suffolk Breck (Foster, 1986). Since that time, the species has continued to expand its distribution in this country (see Map) with Norfolk the latest county to be colonised (Nobes, 2001).

Trans. Suffolk Nat. Soc. 37 (2001)


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