Kvadráty: 6764 7071 5548 6668
  Records by time
Linyphiidae 0-19001901-19501951-20002001-2018
Porrhomma errans (Blackwall, 1841) Not endangered 8x 2x 10x

Porrhomma errans (Blackwall, 1841)

Czech nameplachetnatka trnonohá
Threat levelNot endangered
Records10 nálezů, 4 kvadrátů
First record 1959, B. Novák, Miller 1974b
Last record 2014 , Tomáš Hamřík
Distribution areaEuropean - eM
Phytogeographic areaThermo
Původnost stanovišťclimax, disturbed
Humidityvery dry, dry
StratumGround layer
Osvětlení stanovišťopen
Hojnost výskytuvery rare
Altitude200-400

Bibliography

© Oto 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 (9 used records)
Porrhomma errans (Blackwall, 1841) ESMalesFemalesJuvenilesRecords
Zemní past686509
 MalesFemalesJuvenilesRecords

By biotope (8 used records)
Porrhomma errans (Blackwall, 1841) ESMalesFemalesJuvenilesRecords
Xerotermy na jiných podkladech10006
Pole576502
 MalesFemalesJuvenilesRecords