Records by time
Linyphiidae 0-19001901-19501951-20002001-2018
Porrhomma convexum (Westring, 1851) Almost threatened 3x 12x 50x 25x 90x

Porrhomma convexum (Westring, 1851)

Czech nameplachetnatka bystřinná
Threat levelAlmost threatened
Records91 nálezů, 24 kvadrátů
First record 1899, K. Absolon sen., Kratochvíl 1933a
Last record 2012 , Gabriela Blažková
Distribution areaEuropean (West Siberia
Phytogeographic areaMeso, Oreo
Původnost stanovišťclimax
Humidityhumid, very humid
StratumGround layer
Osvětlení stanovišťsemi-open, partly shaded, dark
Hojnost výskyturare
Altitude200-1200

Bibliography

 © Ota Zimmermann

The spider genus Porrhomma has been revised. it now includes 24 species.

Two new species are described:

  • Porrhomma altaica new species from the Altai Mountains
  • Porrhomma nekolai new species from eastern Asia and North America

Bathyphantes charpentieri Lebert, 1877 was removed from synonymy with Porrhomma microphthalmum (O. Pickard-Cambridge, 1871).

The following new synonymies are proposed:

  • Bathyphantes charpentieri Lebert, 1877 is a junior synonym of Porrhomma convexum (Westring, 1851) new synonymy
  • Porrhomma gertschi Hackman, 1954 is a junior synonym of Porrhomma terrestre (Emerton, 1882) new synonymy
  • Porrhomma myops Simon, 1884 is a junior synonym of Porrhomma rosenhaueri (L. Koch, 1872) new synonymy
  • Porrhomma ocella Chamberlin & Ivie, 1943 is a junior syn onym of Porrhomma convexum (Westring, 1851) new synonymy
  • Porrhomma omissum Miller, 1971 is a junior synonym of Porrhomma egeria Simon, 1884 new synonymy
  • Porrhomma pallidum affinis Miller & Kratochvíl, 1940 is a junior synonym of Porrhomma pallidum Jackson, 1913 new synonymy
  • Porrhomma sodonta (Chamberlin, 1949) is a junior synonym of Porrhomma convexum (Westring, 1851) new synonymy
  • The synonymy of Porrhomma macrochelis (Emerton, 1917) with Macrargus multesimus (O. Pickard-Cambridge, 1875) is supported
  • Porrhomma subterraneum Simon, 1884 is considered a nomen dubium, because it was described according to a juvenile specimen

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.



Statistics

By month


By altitude


By collecting method (46 used records)
Porrhomma convexum (Westring, 1851) LCMalesFemalesJuvenilesRecords
Zemní past2216024
Prosev2303
Individuální sběr1223316
fp1001
Sklepávání1102
 MalesFemalesJuvenilesRecords

By biotope (28 used records)
Porrhomma convexum (Westring, 1851) LCMalesFemalesJuvenilesRecords
štěrkové břehy řek0201
Břehy tekoucích vod3908
údolní jasanoolšové luhy1001
suché křoviny3002
širokolisté horské nivy3003
osluněné skály nižších poloh1001
podmáčené smrčiny0101
Přirozené lesy0101
rašeliniště1102
alpínské trávníky1001
jeskyně0007
 MalesFemalesJuvenilesRecords

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