Species Details
- Species name
- Diplocentria bidentata (Emerton, 1882)
- Synonyms
- Diplocentria bidentatus, Diplocentria rivalis (O.P.-Cambridge, 1905), Diplocentria torrentum (Simon, 1929)
- Taxonomy
- Animalia :: Araneae :: Linyphiidae
- shaded woodland floor
Distribution
The species is widely distributed in Wales and the Pennine region of northern England, scattered in Scotland.Habitat and ecology
Found in a variety of habitats including moss, grasses, woodland litter and under stones. Occasionally recorded on mountains where it has been taken at 975 m. Locket & Millidge (1953) give the adult period as autumn and winter, but adults are also to be found throughout the summer.Status
Recorded from 24 hectads since 1992, and showing an apparent decline of two-thirds in the number of hectads with spider records both before and after that date. However, there are records for 68 hectads since 1980 and since the two key areas of the Pennines and upland Wales are known to be poorly recorded recently, such a large decline is doubtful. Nevertheless, a Watching Brief should be kept on this species.Threats
The ecological requirements of this species are poorly known and it is not possible to determine any threats at present.Management and conservation
No recommendations at present. Text based on Dawson, I.K., Harvey, P.R., Merrett, P. & Russell-Smith, A.R. (in prep.).Stats
- First recorded
- 1900
- Last recorded
- 2024
- Total records
- 364
- Total visits
- 353
Conservation status
Diplocentria bidentata
| Source | Reporting category | Designation | Date designated | Comments |
|---|---|---|---|---|
| A Review of the scarce and threatened spiders (Araneae) of Great Britain: Species Status No. 22 (Sep 2017) | Red data categories - spiders (not based on IUCN criteria) | Spider Amber List | 01/09/2017 | |
| A Review of the scarce and threatened spiders (Araneae) of Great Britain: Species Status No. 22 (Sep 2017) | Red listing based on 2001 IUCN guidelines | Least concern | 01/09/2017 | The reasons behind the apparent decline are unclear and, with no obvious threat to the wide range of habitats it occupies, LC is considered suitable. Threats: The ecological requirements of this species are poorly known and it is not possible to determine any threats at present. |
| A Review of the scarce and threatened spiders (Araneae) of Great Britain: Species Status No. 22 (Sep 2017) | Rare and scarce species | Nationally Scarce. Includes Red Listed taxa | 01/09/2017 | Threats: The ecological requirements of this species are poorly known and it is not possible to determine any threats at present. |
Photos and media
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Spatial distribution - hectad map
Click on one of the date ranges in the key to highlight that particular range. Click anywhere else on the map to go back to all three date ranges.
Thresholds:
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Rejected records are excluded from this map. Unverified records are included.
Temporal distribution - records by year
Records that span more than one year are not included in this chart.
Temporal distribution - records by week
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