Linyphiidae: Centromerus Dahl, 1886

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1
Males

  2  

- Females

  22  

2
(1)
Paracymbium of male pedipalp with a row of fine, uniformly large saw teeth

  3  

- Paracymbium different

  5  

3
(2)

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cp

Body length 2.2-4.0 mm; male pedipalp with large paracymbium; bulbus with small apophysis; robust denticles on lamina

Centromerus sylvaticus (Blackwall, 1841)

female

- Body length <2.0mm

  4  

4
(3)

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cp

Basal bulbal apophysis rounded

Centromerus albidus Simon, 1929

female

-

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Basal bulbal apophysis pointed

Centromerus serratus (O. P.-Cambridge, 1875)

female

5
(2)
Paracymbium distally with one or several pointed denticles

  6  

- Male pedipalp different

  7  

6
(5)

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Paracymbium distally with one denticle; basal apophysis short and straight

Centromerus sellarius (Simon, 1884)

female

-

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Paracymbium distally with 2-4 denticles; basal apophysis long and bent

Centromerus cavernarum (L. Koch, 1872)

female

7
(5)
Body length up to 2.0 mm, often considerably smaller

  8  

- Body length greater than 2.0 m, often considerably larger

  15  

8
(7)

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cp

Edge on median paracymbial part wavy; basal apophysis large, sickle-shaped

Centromerus brevipalpus (Menge, 1866)

female

- Edge on median paracymbial part smooth

  9  

9
(8)

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cp

Paracymbium with a small denticle on median part; basal apophysis long and narrow

Centromerus semiater (L. Koch, 1879)

female

- Male pedipalp different

  10  

10
(9)
Cymbial base with process or protruding

  11  

- Cymbial base normal

  12  

11
(10)

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Cymbial base elongated to form a long and bent process; paracymbium without denticles

Centromerus persimilis (O. P.-Cambridge, 1912)

female

-

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Cymbial base protruding; paracymbium distally very broad

Centromerus leruthi Fage, 1933

female

12
(10)

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cp

Body length 2.0 mm; paracymbium distally narrow; cymbium basally not protruding; basal apophysis claw-shaped

Centromerus levitarsis (Simon, 1884)

female

- Body length 1.0-1.6 mm

  13  

13
(12)

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cp

Pedipalp as fig.; paracymbium with distinct keel; female unknown

Centromerus minutissimus Merrett & Powell, 1993

- Different

  14  

14
(13)

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cp

Pedipalp as fig.; paracymbium with robust keel

Centromerus piccolo Weiss, 1996

female

15
(7)

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cp

Bulbus of male pedipalp with long lamella, distally with fine denticles

Centromerus dilutus (O. P.-Cambridge, 1875)

female

- Male pedipalp different

  16  

16
(15)

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cp

Cymbium dorsally with conical hump; thorn-shaped apophysis under paracymbium

Centromerus pabulator (O. P.-Cambridge, 1875)

female

- Male pedipalp different

  17  

17
(16)

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cp

Paracymbium with two robust teeth on median part; apophysis as fig.; median apophysis with three striking spikes

Centromerus silvicola (Kulczyński, 1887)

female

- Male pedipalp different

  18  

18
(17)

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Paracymbium with robust sclerotised bar on median part

Centromerus prudens (O. P.-Cambridge, 1873)

female

- Male pedipalp different

  19  

19
(18)
Paracymbium with sclerotised bar, extends over the whole length

  20  

- Paracymbium different

  21  

20
(19)

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cp

Sclerotised bar of paracymbium wavy, with denticles; basal apophysis as fig.

Centromerus capucinus (Simon, 1884)

female

-

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Sclerotised bar of paracymbium with smooth margin; cymbium protruding

Centromerus incilium (L. Koch, 1881)

female

21
(19)

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cp

Paracymbium distally with robust sclerotised bulge; basal apophysis bipartite

Centromerus arcanus (O. P.-Cambridge, 1873)

female

-

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cp

Paracymbium with transversely truncated process on median part; basal apophysis long and narrow

Centromerus subalpinus Lessert, 1907

female

22
(1)
Epigynal groove transverse oval; scapus strongly tapering posteriorly, not reaching posterior epigynal margin

  23  

- Epigyne different

  25  

23
(22)

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cp

Body length 2.2-4.0 mm; epigyne red-brown; vulva as fig.; chelicerae relatively long

Centromerus sylvaticus (Blackwall, 1841)

male

- Body length <2.0 mm

  24  

24
(23)

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Epigyne difficult to recognise, reddish; scapus with wing-like extension; chelicerae small

Centromerus albidus Simon, 1929

male

-

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Epigyne very large; basis of scapus without wing-like extensions

Centromerus serratus (O. P.-Cambridge, 1875)

male

25
(22)
Epigynal groove transverse oval; scapus with broad base, not reaching middle part of epigynal groove

  26  

- Epigyne different

  29  

26
(25)

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cp

Scapus almost triangular; margin of epigynal groove next to scapus with convex protrusion

Centromerus sellarius (Simon, 1884)

male

- Different

  27  

27
(26)

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Margin of epigynal groove not protruding

Centromerus cavernarum (L. Koch, 1872)

male

- Different

  28  

28
(27)

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Epigyne, vulva and prosoma as figs.

Centromerus piccolo Weiss, 1996

male

29
(25)
Scapus very long and thin (more than twice as long as wide)

  30  

- Scapus distinctly shorter

  33  

30
(29)

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cp

Scapus of epigyne flanked by 2 long, slender processes

Centromerus persimilis (O. P.-Cambridge, 1912)

male

- Different

  31  

31
(30)

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cp

Epigyne reddish brown, with 2 arc-shaped sclerotised bars near base of scapus

Centromerus arcanus (O. P.-Cambridge, 1873)

male

- Different

  32  

32
(31)

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Epigyne light yellowish, with long and narrow scapus, reaching middle of opisthosoma

Centromerus dilutus (O. P.-Cambridge, 1875)

male

-

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cp

Scapus of epigyne very long and narrow

Centromerus levitarsis (Simon, 1884)

male

33
(29)
Body length < 1.8 mm, often considerably smaller

  34  

- Body length > 2.0 mm, often considerably larger

  36  

34
(33)

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cp

Scapus of epigyne posteriorly tripartite

Centromerus brevipalpus (Menge, 1866)

male

- Different

  35  

35
(34)

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cp

Scapus of epigyne with 3-4 transverse folds

Centromerus semiater (L. Koch, 1879)

male

-

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cp

Epigyne with tripartite bulge anterior to scapus; scapus broadened in anterior third

Centromerus leruthi Fage, 1933

male

36
(33)

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cp

Epigynal groove almost completely covered by extended anterior epigynal margin; scapus wider than long; epigyne red-brown

Centromerus pabulator (O. P.-Cambridge, 1875)

male

- Epigyne different

  37  

37
(36)

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cp

Scapus strongly broadened at middle of epigynal groove; epigyne red-brown

Centromerus silvicola (Kulczyński, 1887)

male

- Epigyne different

  38  

38
(37)

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cp

Epigyne transverse oval with spoon-shaped scapus; epigyne red-brown

Centromerus prudens (O. P.-Cambridge, 1873)

male

- Epigyne different

  39  

39
(38)
Scapus very small or wider than long

  40  

-

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cp

Epigyne dark red-brown, on posterior margin with dark brown bulges on each side of scapus

Centromerus subalpinus Lessert, 1907

male

40
(39)

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cp

Scapus short and very broad

Centromerus capucinus (Simon, 1884)

male

-

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Scapus very short

Centromerus incilium (L. Koch, 1881)

male

Further taxa

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1. Centromerus abditus Gnelitsa, 2007

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2. Centromerus acutidentatus Deltshev, 2002

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3. Centromerus andrei Dresco, 1952

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4. Centromerus andriescui Weiss, 1987

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5. Centromerus balazuci Dresco, 1952

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6. Centromerus bonaeviae Brignoli, 1979

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7. Centromerus bulgarianus (Drensky, 1931)

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8. Centromerus chappuisi Fage, 1931

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9. Centromerus cinctus (Simon, 1884)

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10. Centromerus clarus (L. Koch, 1879)

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11. Centromerus corsicus (Simon, 1910)

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12. Centromerus cottarellii Brignoli, 1979

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13. Centromerus dacicus Dumitrescu & Georgescu, 1980

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14. Centromerus desmeti Bosmans, 1986

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15. Centromerus europaeus (Simon, 1911)

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16. Centromerus gentilis Dumitrescu & Georgescu, 1980

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17. Centromerus ictericus (Simon, 1929)

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18. Centromerus isaiai Bosmans, 2015

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19. Centromerus lakatnikensis (Drensky, 1931)

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20. Centromerus marciai Bosmans & Gasparo, 2015

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21. Centromerus milleri Deltshev, 1974

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22. Centromerus minor Tanasevitch, 1990

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23. Centromerus nurgush Tanasevitch & Esyunin, 2013

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24. Centromerus obenbergeri Kratochvil & Miller, 1938

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25. Centromerus obscurus Bösenberg, 1902

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26. Centromerus paradoxus (Simon, 1884)

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27. Centromerus pasquinii Brignoli, 1971

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28. Centromerus phoceorum Simon, 1929

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29. Centromerus ponsi Lissner, 2016

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30. Centromerus pratensis Gnelitsa & Ponomarev, 2010

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31. Centromerus prudens electus (Simon, 1884)

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32. Centromerus puddui Brignoli, 1979

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33. Centromerus satyrus (Simon, 1884)

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34. Centromerus serbicus Deltshev, 2002

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35. Centromerus setosus Miller & Kratochvil, 1940

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36. Centromerus sinus (Simon, 1884)

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37. Centromerus subcaecus Kulczyński, 1914

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38. Centromerus succinus (Simon, 1884)

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39. Centromerus sylvaticus paucidentatus Deltshev, 1983

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40. Centromerus timidus (Simon, 1884)

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41. Centromerus tridentinus Caporiacco, 1952

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42. Centromerus turcicus Wunderlich, 1995

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43. Centromerus unicolor Roewer, 1959

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44. Centromerus valkanovi Deltshev, 1983