Linyphiidae: Agyneta Hull, 1911

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1

Metatarsus IV with trichobothrium

  2  

-

Metatarsus IV without trichobothrium

  15  

2
(1)
Males

  3  

- Females

  9  

3
(2)

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Dorsal line of prosoma posterior to head region distinctly depressed; male pedipalp with conically bulged cymbium; lamella characteristica distally straightly truncated and serrated

Agyneta conigera (O. Pickard-Cambridge, 1863)

female

- Dorsal line of prosoma horizontal, not depressed

  4  

4
(3)
Lamella characteristica of male pedipalp basally with a long and bent process

  5  

- Different

  6  

5
(4)

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Process of lamella characteristica rounded; pedipalp as fig.

Agyneta ramosa Jackson, 1912

female

-

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Process of lamella characteristica pointed; pedipalp as fig.

Agyneta trifurcata Hippa & Oksala, 1985

female

6
(4)
Distal margin of lamella characteristica concave, with fine denticles

  7  

- Lamella characteristica different

  8  

7
(6)

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Lamella characteristica as fig.; paracymbium basally without tooth

Agyneta cauta (O. Pickard-Cambridge, 1903)

female

-

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Lamella characteristica as fig.; paracymbium basally with tooth

Agyneta olivacea (Emerton, 1882)

8
(6)

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Lamella characteristica with 2 stout teeth

Agyneta subtilis (O. Pickard-Cambridge, 1863)

female

-

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Lamella characteristica distally rounded and with fine denticles

Agyneta decora (O. Pickard-Cambridge, 1871)

female

9
(2)
Female pedipalp distally with thickened segments

  12  

- Female pedipalp distally not with thickened segments

  10  

10
(9)

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Median epigynal plate with base wider than long, medially slightly indented; pedipalp as fig.

Agyneta conigera (O. Pickard-Cambridge, 1863)

male

- Epigynal plate approximately as long as wide

  11  

11
(10)

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Three very similar species: Epigyne, vulva and pedipalp as figs.

Agyneta ramosa Jackson, 1912

male

-

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Epigyne as fig.; clypeus more pointed

Agyneta trifurcata Hippa & Oksala, 1985

male

-

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epigyne as fig.; colour similar to trifurcata, but coxae not black; clypeus short and steep; male unknown

Agyneta breviceps Hippa & Oksala, 1985

12
(9)
Median epigynal plate deeply divided posteriorly

  13  

- Median epigynal plate not divided posteriorly

  14  

13
(12)

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Median epigynal plate V-like divided posteriorly (arrow); note the height of the visible part of the epigynal entrance duct compared to A. decora; female palpal tarsus as fig.

Agyneta cauta (O. Pickard-Cambridge, 1903)

male

14
(12)

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Median epigynal plate straightly truncated / slightly indented posteriorly; female pedipalp as fig.

Agyneta subtilis (O. Pickard-Cambridge, 1863)

male

-

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Median epigynal plate slightly indented posteriorly (arrow); note the height of the visible part of the epigynal entrance duct compared to A. cauta

Agyneta decora (O. Pickard-Cambridge, 1871)

male

15
(1)

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Metatarsus I and II dorsally with a projecting bristle; male pedipalp with large flat paracymbium and typical lamella characteristica; epigyne with triangular median plate, straightly truncated posteriorly

Agyneta innotabilis (O. Pickard-Cambridge, 1863)

- Metatarsus I and II without dorsal bristle

  16  

16
(15)
Males

  17  

- Females

  28  

17
(16)
Tibia I-II with one lateral bristle

  18  

- Tibia I-II without lateral bristle

  23  

18
(17)

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Lamella characteristica very broad, distally concave; tibial apophysis as fig.

Agyneta affinis (Kulczyński, 1898)

female

- Lamella characteristica different

  19  

19
(18)
Male pedipalp with conspicuous tibial apophysis

  20  

-

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Male pedipalp without conspicuous tibial apophysis; lamella characteristica long and narrow, finely serrated distally

Agyneta mollis (O. Pickard-Cambridge, 1871)

female

20
(19)

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Tibial apophysis large and pointed; lamella characteristica broad, strongly rounded distally

Agyneta simplicitarsis (Simon, 1884)

female

- Tibial apophysis different

  21  

21
(20)

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Tibia with a rounded and a pointed apophysis; lamella characteristica as fig.; paracymbium with a protruding edge

Agyneta orites (Thorell, 1875)

female

- Tibial apophysis small, bent and distally rounded

  22  

22
(21)

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Tibial apophysis bent; lamella characteristica less distinctly angularly bent, often only slightly bent; paracymbium with 2 small stout hooks

Agyneta saxatilis (Blackwall, 1844)

female

-

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Tibial apophysis less bent; lamella characteristica almost rectangularly bent or curved

Agyneta mossica (Schikora, 1993)

female

23
(17)
Lamella characteristica of male pedipalp distally with stout prongs, near base without process

  24  

- Lamella characteristica different

  25  

24
(23)

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Lamella characteristica long and broad, distally with 2 conspicuously long prongs; tibia with rounded apophysis

Agyneta fuscipalpus (C. L. Koch, 1836)

female

-

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Lamella characteristica very broad, distally with several equally large prongs

Agyneta nigripes (Simon, 1884)

female

25
(23)
Lamella characteristica near its base with jagged or pointed process

  26  

- Lamella characteristica without basal process

  27  

26
(25)

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Basal process of lamella characteristica with simple tip

Agyneta equestris (L. Koch, 1881)

female

-

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Basal process of lamella characteristica broad and jagged

Agyneta gulosa (L. Koch, 1869)

female

27
(25)

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Lateral margins of lamella characteristica almost parallel

Agyneta ressli (Wunderlich, 1973)

female

-

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Lamella characteristica strongly broadened in the middle, distally tapering; tibial apophysis as fig.

Agyneta rurestris (C. L. Koch, 1836)

female

28
(16)
Tibia I and II with one lateral bristle

  29  

- Tibia I and II without lateral bristle

  34  

29
(28)

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Scapus of epigyne square

Agyneta affinis (Kulczyński, 1898)

male

- Scapus different

  30  

30
(29)

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Scapus of epigyne very broad with large caudal projection

Agyneta orites (Thorell, 1875)

male

- Epigyne different

  31  

31
(30)
Epigyne very broad, with 3 parts posteriorly

  32  

-

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Epigyne with strongly tapering scapus

Agyneta mollis (O. Pickard-Cambridge, 1871)

male

32
(31)

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Anterior epigynal margin simply arcuate

Agyneta simplicitarsis (Simon, 1884)

male

- Epigyne different

  33  

33
(32)

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Epigyne and vulva as figs.

Agyneta mossica (Schikora, 1993)

male

-

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Anterior epigynal margin distinctly indented medially

Agyneta saxatilis (Blackwall, 1844)

male

34
(28)
All segements of female pedipalp strongly pigmented

  35  

- Female pedipalp only distal segments more strongly pigmented

Females of following species are very difficult to distinguish. A relatively reliable character is the colouration of the legs

  36  

35
(34)

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Epigyne as fig.; legs slightly pigmented, middle brown

Agyneta fuscipalpus (C. L. Koch, 1836)

male

-

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Epigyne as fig.; legs strongly pigmented, almost black

Agyneta nigripes (Simon, 1884)

male

36
(34)
Receptacula seminis longish or kidney-shaped

  37  

- Receptacula seminis globular or as fig.

  38  

37
(36)

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Epigyne as fig.; receptacula seminis longish

Agyneta equestris (L. Koch, 1881)

male

-

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Epigyne as fig.; receptacula seminis kidney-shaped

Agyneta gulosa (L. Koch, 1869)

male

38
(36)

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Epigyne as fig.; receptacula seminis globular

Agyneta ressli (Wunderlich, 1973)

male

-

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Epigyne and vulva as figs.

Agyneta rurestris (C. L. Koch, 1836)

male

Further taxa

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1. Agyneta allosubtilis Loksa, 1965

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2. Agyneta arietans (O. Pickard-Cambridge, 1873)

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3. Agyneta birulai (Kulczyński, 1908)

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4. Agyneta birulaioides Wunderlich, 1995

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5. Agyneta brusnewi (Kulczyński, 1908)

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6. Agyneta bulavintsevi Tanasevitch, 2016

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7. Agyneta inermis Tanasevitch, 2019

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8. Agyneta levii Tanasevitch, 1984

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9. Agyneta mesasiatica Tanasevitch, 2000

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10. Agyneta milleri (Thaler, Buchar & Kurka, 1997)

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11. Agyneta nigripes nivicola (Simon, 1929)

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12. Agyneta pinicola Gnelitsa, 2014

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13. Agyneta provincialis (Denis, 1949)

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14. Agyneta pseudorurestris Wunderlich, 1980

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15. Agyneta pseudosaxatilis Tanasevitch, 1984

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16. Agyneta punctata Wunderlich, 1995

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17. Agyneta ripariensis Tanasevitch, 1984

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18. Agyneta saaristoi Tanasevitch, 2000

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19. Agyneta similis (Kulczyński, 1926)

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20. Agyneta suecica Holm, 1950

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21. Agyneta tibialis Tanasevitch, 2005