Rosser’s Sac-spider Clubiona rosserae
Rosser’s Sac-spider (Clubiona rosserae) is one of Britain’s rarest spiders, known from only a very small number of sites nationally. A member of the sac spider family (Clubionidae), it is associated with tall, tussocky fen vegetation and reedbed margins – habitats where it constructs its characteristic silken retreat amongst plant stems. Suffolk’s extensive fen and reedbed systems, particularly in the Waveney Valley and the coastal wetlands, place the county in a potentially significant position for this elusive species. It is named in honour of the British arachnologist Meriel Rosser, and its rarity and habitat specificity make any verified Suffolk record of considerable importance. Image: © Matt (oldarachno), iNaturalist.
Find out more: iNaturalist, British Arachnological Society, Suffolk LNRS information page
Suffolk’s Priority Spider and other Arachnid Species
Key
Listed as a conservation priority in Suffolk’s Biodiversity Action Plan.
Closely associated with Suffolk’s landscape and natural identity.
Identified as a key priority for recovery under Suffolk’s Local Nature Recovery Strategy.
Has a Species of the Month article attached.
