Theridiidae: Theridion Walckenaer, 1805

In case you find an error or have a specific suggestion, please follow this link: click
1
Median longitudinal band on opisthosoma with large, uniform spikes, almost white, grey or red

  2  

- Median longitudinal band on opisthosoma different

  4  

2
(1)

world

add

cp

Median longitudinal band of opisthosoma almost white, with brown or black margin; male pedipalp with bipartite conductor; epigyne difficult to recognise

Simitidion simile (C. L. Koch, 1836)

- Prosoma red with white margin

  3  

3
(2)

world

add

cp

Opisthosoma and male pedipalp as figs.; epigyne ± rectangular; prosoma yellowish with brown margin and median stripe; opisthosoma next to dorsal longitudinal band with fine white and brown points, ventrally spotted with white, with dark spot anterior to spinnerets

Theridion pictum (Walckenaer, 1802)

-

world

add

cp

Pedipalp with conspicuous median apophysis and terminal hook on conductor; epigyne with very small central opening; prosoma light yellow with dark median stripe; opisthosoma with whitish pattern, margined with grey

Theridion hemerobium Simon, 1914

4
(1)
Opisthosoma on both sides of light median band with a row of large, rectangular, dark spots as fig.

  5  

- Opisthosoma dorsally different; spots irregularly arranged

  6  

5
(4)

world

add

cp

Conductor large, shovel-shaped; epigynal groove wider than long; prosoma reddish yellow with broad brown-black margin and median stripe; opisthosoma yellowish, dorsally with dark brown pattern consisting of spots

Phylloneta impressa (L. Koch, 1881)

-

world

add

cp

Conductor short, distally truncated; epigynal groove approx. as long as wide

Phylloneta sisyphia (Clerck, 1757)

6
(4)
Opisthosoma dorsally in anterior third with dark pattern, numerous light spots on dark background or completely white, never a continuous median band

  7  

- Opisthosoma dorsally with continuous light median band as fig.

  10  

7
(6)

world

add

cp

Dark spot on anterior third of opisthosoma longer than wide or opisthosoma completely white; male pedipalp with long, bent tibia; epigyne very small, black, bipartite

Heterotheridion nigrovariegatum (Simon, 1873)

- Dark spot in anterior third of opisthosoma wider than long or bipartite or with irregular pattern; male pedipalp and epigyne different

  8  

8
(7)

world

add

cp

Opisthosoma with irregular pattern consisting of light spots, posteriorly with tubercle, ventrally black with 3 white spots; male pedipalp, epigyne and vulva as figs.; prosoma brown, dark margined

Achaeridion conigerum (Simon, 1914)

- Different

  9  

9
(8)

world

add

cp

Dark spot in anterior third large (sometimes extended over whole dorsal side) and with convex anterior margin; embolus very long, forming a large loop; epigynal groove longer than wide; prosoma yellow, head region and margin darkened

Sardinidion blackwalli (O. P.-Cambridge, 1871)

-

world

add

cp

Dark spot in anterior third of opisthosoma often bipartite and with concave anterior margin; male pedipalp, epigyne and vulva as fig.; prosoma whitish yellow with fine black margin and broad, black median stripe; opisthosoma whitish yellow with fine grey or brown spots and variable pattern

Platnickina tincta (Walckenaer, 1802)

10
(6)

world

add

cp

Light median band of opisthosoma widest in the middle, bordered by irregular black spots; male pedipalp, epigyne and vulva as fig.

Theridion familiare O. P.-Cambridge, 1871

- Light median band of opisthosoma ± of the same width along its whole length with ± regularly bulged margin

  11  

11
(10)
Conductor as wide as long, distally simple; epigynal groove as wide as long, approx. circular

  12  

- Conductor distally with complex processes; epigyne different, not circular

  15  

12
(11)

world

add

cp

Bulbus with large, projecting, bipartite apophysis; epigynal groove posteriorly dark margined, anteriorly with small bulge; opisthosoma with light, laterally bulged median band, dark margined

Theridion varians Hahn, 1833

- Bulbus and epigyne different

  13  

13
(12)

world

add

cp

Conductor narrow; epigynal groove shallow; copulatory opening distinctly visible; opisthosoma dorsally with longitudinal band as fig. (see also T. asopi)

Theridion betteni Wiehle, 1960

- Conductor broader; copulatory opening covered

  14  

14
(13)

world

add

cp

Conductor ± circular; epigynal groove posteriorly bulged; entrance ducts forming a double loop

Theridion melanurum Hahn, 1831

-

world

add

cp

Conductor laterally with small, projecting tip; epigynal groove not bulged posteriorly; entrance ducts in numerous narrow loops

Theridion mystaceum L. Koch, 1870

15
(11)

world

add

cp

Body length approx. 2 mm; conductor distally with 2 long tips; epigynal groove distinctly bulged anteriorly; entrance ducts long and complexly bent

Theridion boesenbergi Strand, 1904

- Body length greater than or equal 2.5 mm; conductor and epigyne different

  16  

16
(15)

world

add

cp

Conductor with a single tip; epigynal groove concave posteriorly

Theridion pinastri L. Koch, 1872

-

world

add

cp

Tip of conductor bipartite; posterior margin of epigynal groove straight or slightly convex; entrance ducts with double loop

Theridion petraeum L. Koch, 1872

Further taxa

world

add

cp

1. Theridion adrianopoli Drensky, 1915

world

add

cp

2. Theridion asopi Vanuytven, 2014

world

add

cp

3. Theridion bosniense Wunderlich, 2011

world

add

cp

4. Theridion carpathium Brignoli, 1984

world

add

cp

5. Theridion cinereum Thorell, 1875

world

add

cp

6. Theridion corcyraeum Brignoli, 1984

world

add

cp

7. Theridion furfuraceum Simon, 1914

world

add

cp

8. Theridion genistae Simon, 1873

world

add

cp

9. Theridion glaucinum Simon, 1881

world

add

cp

10. Theridion hannoniae Denis, 1945

world

add

cp

11. Theridion harmsi Wunderlich, 2011

world

add

cp

12. Theridion helena Wunderlich, 2011

world

add

cp

13. Theridion innocuum Thorell, 1875

world

add

cp

14. Theridion italiense Wunderlich, 1995

world

add

cp

15. Theridion lapidicola Kulczyński, 1887

world

add

cp

16. Theridion malagaense Wunderlich, 2011

world

add

cp

17. Theridion melanostictum O. P.-Cambridge, 1876

world

add

cp

18. Theridion nasutum Wunderlich, 1995

world

add

cp

19. Theridion negebense Levy & Amitai, 1982

world

add

cp

20. Theridion palmgreni Marusik & Cellarius, 1986

world

add

cp

21. Theridion parvulum Blackwall, 1870

world

add

cp

22. Theridion pinicola Simon, 1873

world

add

cp

23. Theridion pyrenaeum Denis, 1945

world

add

cp

24. Theridion semitinctum Simon, 1914

world

add

cp

25. Theridion sibiricum Marusik, 1988

world

add

cp

26. Theridion tenellum C. L. Koch, 1841

world

add

cp

27. Theridion tigrae Esyunin & Efimik, 1996

world

add

cp

28. Theridion uhligi Martin, 1974

world

add

cp

29. Theridion wiehlei Schenkel, 1938

world30. Theridion albipes L. Koch, 1878
world31. Theridion histrionicum Thorell, 1875
world32. Theridion laevigatum Blackwall, 1870
world33. Theridion prominens Blackwall, 1870
world34. Theridion swarczewskii Wierzbicki, 1902
world35. Theridion varians rusticum Simon, 1873