Records by time | |||||
---|---|---|---|---|---|
Linyphiidae | 0-1900 | 1901-1950 | 1951-2000 | 2001-2018 | |
Porrhomma convexum (Westring, 1851) Almost threatened | 3x | 12x | 50x | 25x | 90x |
Czech name | plachetnatka bystřinná |
---|---|
Threat level | Almost threatened |
Records | 91 nálezů, 24 kvadrátů |
First record |
1899, K. Absolon sen., Kratochvíl 1933a |
Last record | 2012 , Gabriela Blažková |
Distribution area | European (West Siberia |
Phytogeographic area | Meso, Oreo |
Původnost stanovišť | climax |
Humidity | humid, very humid |
Stratum | Ground layer |
Osvětlení stanovišť | semi-open, partly shaded, dark |
Hojnost výskytu | rare |
Altitude | 200-1200 |
The spider genus Porrhomma has been revised. it now includes 24 species.
Two new species are described:
Bathyphantes charpentieri Lebert, 1877 was removed from synonymy with Porrhomma microphthalmum (O. Pickard-Cambridge, 1871).
The following new synonymies are proposed:
To date, Porrhomma indecorum Simon, 1910 and Porrhomma marphaense Wunderlich, 1983 are only known from findings of females. They are considered to be species inquirenda, and their names are declared nomina dubia.
Keys are provided for males and females. Vulvae are drawn in dorsal, ventral and caudal views to understand their spatial structure.
Porrhomma convexum (Westring, 1851) LC | Males | Females | Juveniles | Records |
---|---|---|---|---|
Zemní past | 22 | 16 | 0 | 24 |
Prosev | 2 | 3 | 0 | 3 |
Individuální sběr | 12 | 23 | 3 | 16 |
fp | 1 | 0 | 0 | 1 |
Sklepávání | 1 | 1 | 0 | 2 |
Males | Females | Juveniles | Records |
Porrhomma convexum (Westring, 1851) LC | Males | Females | Juveniles | Records |
---|---|---|---|---|
štěrkové břehy řek | 0 | 2 | 0 | 1 |
Břehy tekoucích vod | 3 | 9 | 0 | 8 |
údolní jasanoolšové luhy | 1 | 0 | 0 | 1 |
suché křoviny | 3 | 0 | 0 | 2 |
širokolisté horské nivy | 3 | 0 | 0 | 3 |
osluněné skály nižších poloh | 1 | 0 | 0 | 1 |
podmáčené smrčiny | 0 | 1 | 0 | 1 |
Přirozené lesy | 0 | 1 | 0 | 1 |
rašeliniště | 1 | 1 | 0 | 2 |
alpínské trávníky | 1 | 0 | 0 | 1 |
jeskyně | 0 | 0 | 0 | 7 |
Males | Females | Juveniles | Records |