Centromerus semiater (L. Koch, 1879)
Description
Male palp with long and narrow basal apophysis. Paracymbium with small denticle on median part. Epigyne with scapus, with 3-4 transverse folds. Prosoma yellow, with broad, black margin. Sternum yellowish, blackish darkened. Chelicerae yellowish, relatively long. Legs yellow, fine. Opisthosoma dark grey, sometimes with brighter median spot ventrally.
Body length male: 1.4-1.7 mmBody length female: 1.4-1.7 mm
Additional information
in very humid moss, mostly in cattail region of water
Frequency: Rarely found
Character states from linyphiid key
Distribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
 |  |
Figures
Pedipalp, ventral view
(Miller 1958a)
Pedipalp
(Roberts 1987)
Pedipalp
(Locket & Millidge 1953)
Pedipalp
(Locket et al. 1974)
Pedipalp, retrolateral view
(Løvbrekke unpubl.)
Bulbus
(Wiehle 1960b)
Embolic division
(Løvbrekke unpubl.)
Paracymbium, lateral view
(Løvbrekke unpubl.)
Epigyne
(Wiehle 1960b)
Epigyne
(Roberts 1987)
Epigyne
(Locket & Millidge 1953)
Epigyne
(Locket et al. 1974)
Epigyne, ventral view
(Aakra et al. 2016)
Epigyne
(Løvbrekke unpubl.)
Vulva
(Miller 1958a)
Vulva
(Wiehle 1960b)
Vulva, dorsal view
(Aakra et al. 2016)
Vulva
(Løvbrekke unpubl.)
Vulva
(Fjellberg unpubl.)
Habitus, dorsal view
(Fjellberg unpubl.)
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
Aakra K, Morka G H, Antonson A, Farlund M, Wrånes R E, Frølandshagen R, Løvbrekke H, Furuseth P, Fjellberg A, Lemke M, Pfliegler W P, Andersen S, Olsen K M, Aadland B, Berggren K (2016) Spiders new to Norway (Arachnida, Araneae) with ecological, taxonomical and faunistic comments. Norwegian Journal of Entomology 63: 6-43 
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)
Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69
Cera I (2018) The checklist of Latvian spiders (Arachnida: Araneae). Environmental and Experimental Biology 16: 139-152
Farlund M (2019) Norwegian Spiders - Norske edderkopper. Siste oppdatering for funn av nye arter 10. oktober, 2019. Online at http://crocea.wordpress.com/norsk-artsliste/
Fjellberg A (unpubl.)
Ivanov V V (2013) The checklist of Belarusian spiders (Arachnida, Araneae). Zoology and Ecology 4: 293-311
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
Krasnobaev Y P (2004) [Spider catalogue (Aranei) of the Middle Volga Region]. Zhigulevskiy st. Nature Reserve named after I.I. Sprygin, Samara. 213 pp.
Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001]
Lavery A (2019) A revised checklist of the spiders of Great Britain and Ireland. Arachnology 18: 196-212
Locket G H, Millidge A F (1953) British spiders. Vol. II. Ray Society, London, 449 pp.
Locket G H, Millidge A F, Merrett P (1974) British Spiders, Volume III. Ray Society, London, 315 pp.
Løvbrekke H (unpubl.)
Miller F (1958a) Beitrag zur Kenntnis der tschechoslovakischen Spinnenarten aus der Gattung Centromerus Dahl. Časopis Československé Společnosti Entomologické 55: 71-91
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
Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App
Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester, England, 204 pp.
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
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
Seyfulina R R (2019) On linyphiid spiders (Aranei: Linyphiidae) from Moscow Area, Russia. Arthropoda Selecta 28: 453-458
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
Wiehle H (1960b) Beiträge zur Kenntnis der deutschen Spinnenfauna. Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere 88: 195-254
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