Mermessus denticulatus (Banks, 1898)
Description
Tibial apophysis pointed. Epigyne with caudally protruding median plate. Prosoma orange-brown, sometimes darker anteriorly. Sternum orange-brown. Legs brown, to orange-brown. Opisthosoma grey-black, sometimes pale.
Body length male: 1.9-2.5 mmBody length female: 2.8-3.3 mm
Additional information
Probably brought to Europe from North America together with ornamental plants at the end of the eighties
This species of North American origin is not native to Europe (alien species). It had been introduced to Europe at least once and did establish.
Character states from linyphiid key
Distribution
Figures
Pedipalp
(Millidge 1987)
Pedipalp, lateral view
(van Helsdingen 2009b)
Pedipalp, ventral view
(Barrientos et al. 2016)
Pedipalp, ventro-retrolateral view
(Barrientos et al. 2016)
Pedipalp with Tibia, prolateral view
(Barrientos et al. 2019b)
Pedipalp with Tibia, retrolateral view
(Barrientos et al. 2019b)
Pedipalp, prolateral view
(Barrientos et al. 2019b)
Pedipalp, retrolateral view
(Barrientos et al. 2019b)
Pedipalp, retrolateral view
(Lecigne 2021a)
Bulbus
(Barrientos et al. 2019b)
Embolic division
(van Helsdingen 2009b)
Embolic division
(van Helsdingen 2009b)
Embolic division
(Barrientos et al. 2019b)
Suprategular apophysis
(van Helsdingen 2009b)
Palpal tibia, dorsal view
(van Helsdingen 2009b)
Palpal tibia, lateral view
(van Helsdingen 2009b)
Tibial apophysis
(Millidge 1987)
Chelicera, frontal view
(van Helsdingen 2009b)
Chelicerae and eyes, lateral view
(Barrientos et al. 2019b)
Chelicerae and eyes, frontal view
(Barrientos et al. 2019b)
Habitus, lateral view
(Barrientos et al. 2019b)
Epigyne
(Millidge 1987)
Epigyne, caudal view
(van Helsdingen 2009b)
Epigyne, posterior view
(Barrientos et al. 2019b)
Epigyne, ventral view
(Barrientos et al. 2019b)
Vulva
(Millidge 1987)
Vulva, caudal view
(van Helsdingen 2009b)
Vulva, ventral view
(van Helsdingen 2009b)
Vulva
(Barrientos et al. 2019b)
Distribution List
"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.
References
Barrientos J A, Arco L del, Castañé C, Agustí N, Jauset A M, Batuecas I, Alomar Ó (2019b) Arañas epiedáficas (Aranjeae [sic]) en plantaciones de melocotoneros del Segrià, el Bajo Cinca y La Litera (España). Revista Ibérica de Aracnología 34: 41-50 
Barrientos J A, Uribarri I, García-Sarrión R, Enríquez M L, Giralt D (2016) Arañas (Arachnida, Araneae) del Pla de Lleida (Lleida, España). Revista Ibérica de Aracnología 28: 91-101
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
Bosmans R, Van Keer J, Russell-Smith A, Hadjiconstantis M, Komnenov M, Bosselaers J, Huber S, McCowan D, Snazell R, Decae A, Zoumides C, Kielhorn K-H, Oger P (2019c) Spiders of Cyprus (Araneae). A catalogue of all currently known species from Cyprus. Newsletter of the Belgian Arachnological Society 34, Suppl. 1: 1-173
Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69
Bosmans R. (unpubl.) Provisional list of spiders of North Africa. Database excerpt Aug. 2019
Branco V V, Morano E, Cardoso P (2019) An update to the Iberian spider checklist (Araneae). Zootaxa 4614: 201-254
Danışman T, Coşar İ (2019a) Occurence of the alien spider Mermessus denticulatus (Banks, 1898) (Araneae: Linyphiidae) in Turkey. Munis Entomology and Zoology 14: 80-82
Hänggi A, Stäubli A (2012) Nachträge zum „Katalog der schweizerischen Spinnen“: 4. Neunachweise von 2002 bis 2011. Arachnologische Mitteilungen 44: 59-76
Helsdingen P J van (2009b) Mermessus denticulatus (Banks, 1898) and Mermessus trilobatus (Emerton, 1882), adventive species in the Netherlands (Araneae, Linyphiidae). Contributions to Natural History 12: 617-626
Killick T (2023) Some accidental imports reported by members of the British Spider Identification Facebook Group. Newsletter of the British Arachnological Society 156/SRS News 105: 6-9
Lecigne S (2021a) A new species of Sintula (Linyphiidae), redescription of Brigittea innocens (Dictynidae) and eight spider species newly recorded for Turkey (Araneae). Arachnologische Mitteilungen 62: 11-34
Millidge A F (1987) The Erigonine spiders of North America. Part 8. The Genus Eperigone Crosby and Bishop (Araneae, Linyphiidae). American Museum Novitates 2885: 1-75
Oger P, Picard J (2014) Découverte en France de Mermessus denticulatus (Banks, 1898) (Araneae, Linyphiidae). Revue Arachnologique (2) 1: 2-4
Pantini P, Isaia M (2019) Araneae.it: the online catalog of Italian spiders, with addenda on other arachnid orders occurring in Italy (Arachnida: Araneae, Opiliones, Palpigradi, Pseudoscorpionida, Scorpiones, Solifugae). Fragmenta Entomologica 51: 127-152
Rehfeldt S, Cassar T (2024) A contribution to the arachnofauna (Arachnida: Araneae, Opiliones) of the Maltese Islands, with two new records for Europe. Arachnologische Mitteilungen 67: 18-47
Trotta A (2012) Nota su alcuni ragni raccolti in una azienda agricola liguree prima segnalazione italiana di Mermessus denticulatus (Araneae). Bollettino della Società Entomologica Italiana 144: 3-6
WSC (2024) World Spider Catalog. Version 25.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (22.01.2024) doi: 10.24436/2