Linyphiidae  Blackwall, 1859 / Trematocephalus  Dahl, 1886   2 species

Trematocephalus cristatus (Wider, 1834)

Description

Paracymbium strongly structured. Prosoma red-orange, with black eye region and median spot. Male: with spattle-shaped process which overlies the elevated eye region. Legs red-orange. Opisthosoma black-grey.

Body length male: 2.0-2.2 mm
Body length female: 2.5-2.6 mm
Additional information

on trees in open areas, thermophilic

Character states from linyphiid key
Distribution
  Presence
  No data
Global distribution (WSC 2026): Europe, Turkey, Caucasus, Russia (Europe to Far East), Iran, China
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Armenia   (Otto, 2022; Mikhailov & Propistsova, 2017) ||| Austria   (Thaler, 1999b) ||| Azerbaijan   (Otto, 2022) ||| Belarus   (Ivanov, 2013) ||| Belgium   (Bosmans & Van Keer, 2017) ||| Czechia   (Růžička & Řezáč, 2022a) ||| France   (Le Peru, 2007) ||| Georgia   (Otto, 2022) ||| Germany   (Blick et al., 2016) ||| Hungary   (Samu & Szinetár, 1999) ||| Italy   (Isaia et al., 2025) ||| Latvia   (Cera, 2018) ||| Lithuania   (Machač et al., 2016) ||| Luxembourg   (Kreuels et al., 2019) ||| Netherlands   (van Helsdingen, 2025a) ||| Poland   (Rozwałka & Stanska, 2008) ||| Romania   (Weiss & Petrișor, 1999) ||| Russia, Central   (Ponomarev, 2022) ||| Russia, Eastern   (Esyunin & Efimik, 1996a) ||| Russia, Kaliningrad Region   (Schikora, 2014) ||| Russia, Southern   (Otto, 2022; Ponomarev, 2022) ||| Serbia   (Deltshev et al., 2003b) ||| Slovakia   (Gajdoš et al., 1999) ||| Slovenia   (Kostanjšek & Kuntner, 2015) ||| Spain   (Vicente & Miñarro, 2024) ||| Sweden   (Kronestedt, 2001) ||| Switzerland   (Maurer & Hänggi, 1990) ||| Turkey (Asia)   (Danışman et al., 2025a) ||| Ukraine   (Polchaninova & Prokopenko, 2019) ||| United Kingdom   (Lavery, 2019) |||
References

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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, 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

Deltshev C D, Ćurčić B P M, Blagoev GA (2003b) The spiders of Serbia. Inst. Zoology, Fac. Biology, Belgrade & Inst. Zoology, Bulg. Acad. Sci., Sofia. 832 pp.

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

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

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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

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Lecigne S (2018b) Récits de chasses aranéologiques récentes dans plusieurs départements de France. Redécouverte de Philodromus buchari Kubcová, 2004 (Araneae: Philodromidae) et confirmation de la présence de Theridion harmsi Wunderlich, 2011 (Araneae: Theridiidae). Nieuwsbrief van de Belgische Arachnologische Vereniging 33: 59-99 pdf

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Machač O, Ivinskis P, Rimšaitė J (2016) Several new for the Lithuanian fauna species of spiders (Araneae). Naujos ir retos Lietuvos vabzdžių rūšys 28: 121-126 pdf

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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

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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

Schikora H-B (2014) Die Webspinnen des Regenrnoorkomplexes Zehlaubruch, Kaliningrad-Region von Russland (Arachnida, Araneae). Abhandlungen des Naturwissenschaftlichen Vereins zu Bremen 47: 427-446 pdf

Thaler K (1999b) Beiträge zur Spinnenfauna von Nordtirol - 6. Linyphiidae 2: Erigoninae (sensu Wiehle) (Arachnida: Araneida). Veröffentlichungen des Tiroler Landesmuseums Ferdinandeum 79: 215-264 pdf

Vicente R, Miñarro M (2024) Trematocephalus cristatus (Wider, 1834), a new spider for the Iberian Peninsula (Linyphiidae). Revista Ibérica de Aracnología 44: 97-100 pdf

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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

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