Linyphiidae  Blackwall, 1859 / Porrhomma  Simon, 1884   18 species

Porrhomma microphthalmum (O. Pickard-Cambridge, 1871)

Description
Male

Prosoma width male: 0.60-0.70 mm.
Eyes well developed. Opisthosoma blackish.

Body length male: 1.5-2.2 mm
Female

Prosoma width female: 0.60-0.72 mm

Body length female: 1.5-2.2 mm
Additional information

In the plain, often in agrarian areas

Character states from linyphiid key
Distribution
  Presence
  No data
Global distribution (WSC 2026): Europe, Turkey, Georgia, Russia (Europe, Caucasus), Iran, Kazakhstan, China
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Austria   (Komposch & Steinberger, 1999) ||| Belarus   (Ivanov, 2013) ||| Belgium   (Bosmans & Van Keer, 2017) ||| Bulgaria   (Blagoev et al., 2018) ||| Croatia   (Milosevic, 2002) ||| Czechia   (Růžička & Řezáč, 2022a) ||| Denmark   (Scharff & Gudik-Sørensen, 2006) ||| Estonia   (Vilbaste, 1987) ||| Finland   (Koponen et al., 2016) ||| France   (Le Peru, 2007) ||| Georgia   (Seropian et al., 2023b) ||| Germany   (Blick et al., 2016) ||| Hungary   (Samu & Szinetár, 1999) ||| Ireland   (Nolan & O’Reilly, 2021) ||| Italy   (Isaia et al., 2025) ||| Latvia   (Cera, 2018) ||| Lithuania   (Biteniekytė & Rėlys, 2012) ||| Luxembourg   (Kreuels et al., 2019) ||| Moldova   (Vasiliev & Mikhailov, 2023) ||| Netherlands   (van Helsdingen, 2025a) ||| North Macedonia   (Stefanovska et al., 2008) ||| Norway   (Aakra & Hauge, 2003) ||| Poland   (Rozwałka & Stanska, 2008) ||| Romania   (Weiss & Petrișor, 1999) ||| Russia, Central   (Ponomarev, 2022) ||| Russia, Eastern   (Esyunin & Efimik, 1996a) ||| Russia, Kaliningrad Region   (Schikora, 1997) ||| Russia, Southern   (Otto, 2022; Ponomarev, 2022) ||| Serbia   (Grbić et al., 2021) ||| Slovakia   (Gajdoš et al., 1999) ||| Slovenia   (Kostanjšek & Kuntner, 2015; Kostanjšek & Gorjan, 2013) ||| Sweden   (Kronestedt, 2001) ||| Switzerland   (Maurer & Hänggi, 1990) ||| Turkey (Asia)   (Danışman et al., 2025a; Danışman & Coşar, 2013) ||| Ukraine   (Polchaninova & Prokopenko, 2019) ||| United Kingdom   (Lavery, 2019) |||
References

Aakra K, Hauge E (2003) Checklist of Norwegian spiders (Arachnida: Araneae), including Svalbard and Jan Mayen. Norwegian Journal of Entomology 50: 109-129 pdf

Biteniekytė M, Rėlys V (2012) The checklist of Lithuanian spiders (Arachnida: Araneae). Biologija 57: 148-158 pdf

Blagoev G, Deltshev C, Lazarov S, Naumova M (2018) The spiders (Araneae) of Bulgaria. Version: August 2018. National Museum of Natural History, Bulgarian Academy of Sciences. Online at http://www.nmnhs.com/spiders-bulgaria/ (accessed on 10.9.2018) pdf

Blick T, Finch O-D, Harms K H, Kiechle J, Kielhorn K-H , Kreuels M, Malten A, Martin D, Muster C, Nährig D, Platen R, Rödel I, Scheidler M, Staudt A, Stumpf H, Tolke D (2016) Rote Liste und Gesamtartenliste der Spinnen (Arachnida: Araneae) Deutschlands. 3. Fassung, Stand April 2008, einzelne Änderungen und Nachträge bis August 2015. Naturschutz und Biologische Vielfalt 70/4: 383-510 pdf

Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69 pdf

Cera I (2018) The checklist of Latvian spiders (Arachnida: Araneae). Environmental and Experimental Biology 16: 139-152 pdf

Danışman T, Coşar I (2013) A contribution to the knowledge of the linyphiid spider fauna of Turkey (Araneae: Linyohiidae). Acta Zoologica Bulgarica 65: 567-570 pdf

Danışman T, Kunt K B, Özkütük R S, Coşar İ (2025a) The checklist of the spiders of Turkey. Version 2025 [last updated 01 December 2025], online at http://www.spidersofturkey.info pdf

Esyunin S L, Efimik V E (1996a) Catalogue of the spiders (Arachnida, Aranei) of the Urals. KMK Scientific Press, Moscow, 228 pp. pdf

Gajdoš P, Svatoň J, Sloboda J (1999) Katalóg pavúkov Slovenska. Catalogue of Slovakian spiders. Ústav kr. ekol. SAV, Bratislava, 337 pp.

Grbić G, Hänggi A, Krnjajić S (2021) Spiders (Araneae) of Subotica Sandland (Serbia): additional arguments in environmental protection. Acta Zoologica Academiae Scientiarum Hungaricae 67: 15-61 pdf

Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin pdf

Helsdingen P J van (2025a) Catalogus van de Nederlandse spinnen. Versie 2025.1. 249 pp. pdf

Hippa H, Koponen S, Manilla R (1984) Invertebrates of Scandinavian caves I. Araneae, Opiliones, and Pseudoscorpionida (Arachnida). Annales Entomologici Fennici 50: 23-29 pdf

Isaia M, Tolve M, Pantini P (2025) Araneae.it: 2.0: the new updated version of the digital catalog of the Italian spiders and other arachnids (Arachnida: Araneae, Opiliones, Scorpiones, Pseudoscorpiones, Palpigradi, Solifugae). Fragmenta Entomologica 57: 197-204 pdf

Ivanov V V (2013) The checklist of Belarusian spiders (Arachnida, Araneae). Zoology and Ecology 4: 293-311 pdf

Komposch C, Steinberger K-H (1999) Rote Liste der Spinnen Kärntens (Arachnida: Araneae). Naturschutz in Kärnten 15: 567-616 pdf

Koponen S, Fritzén N R, Pajunen T (2016) Checklist of spiders in Finland (Araneae). 6th version, December 2016, online at http://biolcoll.utu.fi/arach/checklist_of_spiders_in_Finland.htm pdf

Kostanjšek R, Gorjan A (2013) A contribution to the Slovenian spider fauna - II. Natura Sloveniae 15: 5-12 pdf

Kostanjšek R, Kuntner M (2015) Araneae Sloveniae: a national spider species checklist. ZooKeys 474: 1-91 pdf

Kreuels M, Staudt A, Christian S (2019) Die Spinnenfauna von Luxemburg – eine Zusammenstellung der Nachweise aus den Jahren 1906-2018 (Arachnida: Araneae). Bulletin de la Société des naturalistes luxembourgeois 121: 203-230 pdf

Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001] pdf

Lavery A (2019) A revised checklist of the spiders of Great Britain and Ireland. Arachnology 18: 196-212 pdf

Le Peru B (2007) Catalogue et répartition des araignées de France. Revue Arachnologique 16: 1-468 pdf

Locket G H, Millidge A F (1953) British spiders. Vol. II. Ray Society, London, 449 pp. pdf

Løvbrekke H (unpubl.)

Maurer R, Hänggi A (1990) Katalog der schweizerischen Spinnen. Documenta Faunistica Helvetiae 12 pdf

Miller F, Obrtel R (1975) Soil surface spiders in a lowland forest. Přírodovědné práce ústavů Československé Akademie Věd v Brně (N.S.) 9(4): 1-40 pdf

Milosevic B (2002) Aranea – Popis vrsta – Checklist. Hrvatsko entomološko društvo – Inventar entomofaune Hrvatske [Aranea – List of species – Checklist. Croatian Entomological Society – Inventory of Croatian entomofauna]. pdf

Nolan M, O’Reilly A (2021) The first Irish record of Porrhomma microphthalmum (O.P.-Cambridge) sensu stricto (Araneae: Linyphiidae). Bulletin of the Irish Biogeographical Society 45: 35-40 pdf

Otto S (2022) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 02.2022. Internet: caucasus-spiders.info.

Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App pdf

Ponomarev A V (2022) Spiders (Arachnida: Araneae) of the southeast of the Russian Plain: catalogue, the fauna specific features. SSC RAS Publishers, Rostov-on-Don, 640 pp. pdf

Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester, England, 204 pp. pdf

Rozwałka R, Stanska M (2008) Check-list of spiders (Araneae) of Poland. 1. December 2008. online at http://www.arachnologia.edu.pl/en/species/8-spiders-of-poland.html pdf

Růžička V (2009) The European species of the microphthalmum-group in the genus Porrhomma (Araneae: Linyphiidae). Contributions to Natural History 12: 1081-1094 pdf

Růžička V (2018) A review of the spider genus Porrhomma (Araneae, Linyphiidae). Zootaxa 4481: 1-75 pdf

Růžička V, Řezáč M (2022a) Seznam pavouků České republiky. List of spiders of the Czech Republic. Online at https://www.arachnology.cz/seznam-pavouku-cr-26.html and https://www.arachnology.cz/en/seznam-pavouku-cr-26.html pdf

Samu F, Szinetár C (1999) Bibliographic check list of the Hungarian spider fauna. Bulletin of the British Arachnological Society 11: 161-184 pdf

Scharff N, Gudik-Sørensen O (2006) Katalog over Danmarks edderkopper (Araneae). Catalogue of the spiders of Denmark (Araneae). Entomologiske Meddelelser 74: 3-71 pdf

Schikora H-B (1997) Wachsende Regenmoorflächen im Zehlaubruch (Kaliningrad-Region): Extremlebensraum für epigäische Spinnen (Arachnida: Araneae)? Verhandlungen der Gesellschaft für Ökologie 27: 447-452 pdf

Seropian A, Bulbulashvili N, Otto S, Krammer H-J, Kachlishvili N, Datunashvili A (2023b) Picking pearls from the Silk Road: insights into the spider (Arachnida, Araneae) diversity in Georgia from the Caucasus barcode of life project. Part II. Caucasiana 2: 231-297 pdf

Stefanovska D, Naumova M, Prelik D, Deltshev C, Lazarov S (2008) Spiders from the Skopje region: a faunistic and zoogeographical analysis. Historia Naturalis Bulgarica 19: 35-49 pdf

Vasiliev A I, Mikhailov K G (2023) Annotated checklist of spiders (Araneae) of the Republic of Moldova. Invertebrate Zoology 20: 307-342 pdf

Vilbaste A (1987) Eesti Ämblikud (Aranei). Annoteeritud nimestik. Estonian spiders (Aranei). An annotated check list. Valgus, Tallinn. 113 pp. & 512 maps on 67 unpag. pages pdf

Weiss I, Petrișor A (1999) List of the spiders (Arachnida: Araneae) from Romania. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 41: 79-107 pdf

Wiehle H (1956) Spinnentiere oder Arachnoidea, X. 28: Familie Linyphiidae-Baldachinspinnen. Die Tierwelt Deutschlands 44: 1-337 pdf

WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2 pdf

Updates
13-10-2025 Distribution update Detail
20-01-2025 Distribution update Detail
16-11-2024 Distribution update Detail
06-02-2024 Image insert
14-12-2023 Distribution insert Detail
24-04-2022 Distribution insert Detail
14-05-2020 Distribution insert Detail
21-09-2018 Image insert
04-02-2018 Image insert
30-09-2014 Distribution update Detail
22-08-2014 Image insert
29-07-2014 Distribution update Detail