Family Dictynidae

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1

Cribellum absent

  2  

-

Cribellum present

  6  

2
(1)

Six eyes

  3  

-

Eight eyes

  4  

3
(2)

Retrotibial apophysis as long as tibia, tip of conductor coiled, insemination duct short and wide

                                Cicurina japonica


speciesimage
male Pedipalp
(Wunderlich & Hänggi 2005)
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male Conductor
(Wunderlich & Hänggi 2005)
speciesimage
female Epigyne
(Wunderlich & Hänggi 2005)
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female Vulva, ventral view
(Wunderlich & Hänggi 2005)
-

Retrotibial apophysis small, invisible, insemination ducts long and thin

Chorizomma

speciesimage
male Pedipalp, ventral view
(De Blauwe 1973)
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male Pedipalp
(De Blauwe 1973)
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female Epigyne
(De Blauwe 1973)
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Eyes, dorsal view
(De Blauwe 1973)
4
(2)

Conductor very long upper arm, longer than cymbium, retrotibial apophysis sharply pointed, epigyne with coiled insemination ducts, no distinct fovea and no septum

Mastigusa

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male Pedipalp
(Roberts 1995)
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male Habitus
(Tyshchenko 1971)
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female Epigyne
(Roberts 1995)
-

Upper arm of conductor undeveloped, epigyne with fovea or septum

  5  

5
(4)

Retrotibial apophysis present, wide and not tapering epigynal fovea distinct (Cicurina paphlagoniae is obviously misplaced in this genus)

Cicurina

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Eyes, frontal view
(Dahl 1931)
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Leg I
(Palmgren 1977)
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Spinnerets
(Palmgren 1977)
-

Retrotibial apophysis absent, tip of conductor straight, embolus short, epigyne with septum (intertidal species)

Mizaga

speciesimage
male Pedipalp, retrolateral view
(De Blauwe 1973)
speciesimage
male Pedipalp, ventral view
(De Blauwe 1973)
speciesimage
female Epigyne
(De Blauwe 1973)
6
(1)

6 eyes, no yellowish pattern

Scotolathys

speciesimage
male Pedipalp, ventral view
(Marusik et al. 2009a)
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male Pedipalp, retrolateral view
(Marusik et al. 2009a)
speciesimage
male Prosoma, frontal view
(Marusik et al. 2009a)
speciesimage
female Epigyne, ventral view
(Marusik et al. 2009a)
-

8 eyes

  7  

7
(6)

Cribellum divided (bipartite)

  8  

-

Cribellum undivided (entire)

  9  

8
(7)

Dark coloured, almost black, no white (guanine) pigmentation, palp with ctenidia (=small process on tibia, bearing very small spines), epigyne with ridges

Dictyna
(partim)

speciesimage
male Pedipalp
(Roberts 1995)
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male Pedipalp
(Roberts 1995)
speciesimage
female Epigyne
(Roberts 1995)
speciesimage
female Epigyne
(Roberts 1995)
-

Bright green or red with white (guanine) pigmentation, male palp with small patellar apophysis

Nigma

speciesimage
male Pedipalp
(Roberts 1995)
speciesimage
female Epigyne
(Roberts 1995)
9
(7)

Legs with spines

  10  

-

Legs without spines

  11  

10
(9)

Minute (< 2 mm), spines either strong and large or small, cymbium unmodified, receptacles bean-shaped to oval

Altella

speciesimage
male Pedipalp
(Miller 1971)
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male Metatarsus I
(Miller 1949)
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female Vulva
(Braun 1964)
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Leg III
(Wiehle 1967)
-

Medium sized (> 2mm), spines normal on all legs, cymbium with basal fold, epigyne with septum, receptacles round

Devade

speciesimage
male Pedipalp, retrolateral view
(Esyunin & Efimik 2000)
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female Epigyne, ventral view
(Esyunin & Efimik 2000)
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female Vulva, dorsal view
(Esyunin & Efimik 2000)
11
(9)

Male palp with ctenidia (=small process on tibia, bearing very small spines), epigyne with ridges (cave: no ctenidia in Archaeodictyna ammophila which shall key out here)

  12  

-

Male palp without ctenidia, epigyne without ridges

  15  

12
(11)

Cephalic part of the prosoma strongly raised in males, epigyne shows anterior to the epigastric furrow two dark receptacula, close to each other

Archaeodictyna

speciesimage
male Pedipalp, ventral view
(Miller & Svaton 1978)
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male Pedipalp
(Miller 1958b)
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male Pedipalp, ventral view
(Heimer & Nentwig 1991)
speciesimage
female Epigyne
(Miller & Svaton 1978)
speciesimage
female Epigyne
(Miller & Svaton 1978)
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female Epigyne
(Roberts 1995)
-

Cephalic part of the prosoma not strongly raised in males, epigynal ridges present

  13  

13
(12)

Male chelicera with lateral boss, embolic base in centre of tegulum, makes more than 360° loop, opisthosoma dark with light transverse spot in caudal half

Marilynia

-

Male without lateral boss, embolic base on prolateral-basal side or central-basal, opisthosoma with dark pattern on light background

  14  

14
(13)

Embolus thick, not long (starts from 8-9 o’clock)

Emblyna

speciesimage
male Pedipalp, ventral view
(Miller & Svaton 1978)
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male Pedipalp, ventral view
(Miller & Svaton 1978)
speciesimage
female Epigyne
(Miller & Svaton 1978)
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female Epigyne
(Miller & Svaton 1978)
-

Embolus thin, from not long to long (starts from 6 to 9)

Dictyna
(partim)

speciesimage
male Pedipalp
(Loksa 1969)
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male Pedipalp
(Loksa 1969)
15
(11)

Retrotibial apophysis long, almost as long as cymbium, epigyne as figure

Brommella

speciesimage
male Pedipalp
(Braun 1964)
speciesimage
female Vulva
(Harm 1966)
-

Retrotibial apophysis not long, epigyne different

  16  

16
(15)

Male palpal patella with conical outgrowth or apophysis, receptacles round, epigyne with one shallow fovea or 2 distinct fovea, insemination duct long or very long, often with white (guanine) spots on opisthosoma

Lathys
(partim)

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Cephalic area
(Wiehle 1953)
-

Male palpal patella without outgrowth or conical apophysis, opisthosoma without white spots, epigyne variable

  17  

17
(16)

Basal arm of conductor stretching dorsally, screw like or spine like, epigyne with one or two fovea, insemination duct long or very long, receptacles round

Lathys
(partim)

-

Different

  18  

18
(17)

Tip of conductor long and coiled, epigyne weakly sclerotized as figure (only northern Fennoscandia and Caucasus)

Arctella

speciesimage
male Pedipalp
(Holm 1945)
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female Epigyne
(Holm 1945)
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Prosoma
(Palmgren 1977)
-

Tip of conductor not long and not coiled, epigyne different

  19  

19
(18)

Tip of conductor stretching posteriorly, retrotibial apophysis not wider than tibia, epigyne weakly sclerotized

Argenna

-

Tip of conductor bent, retrotibial apophysis wider than tibia, fovea strongly chitinised (only northern Fennoscandia)

Hackmania

speciesimage
male Pedipalp
(Palmgren 1977)
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female Epigyne
(Palmgren 1977)
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Prosoma, dorsal view
(Palmgren 1977)
20
(1)

There is only one species in this enigmatic genus. It has been described as a new species 1884 by Simon, collected between grass bunches at the Spanish sea shore, but was obviously never recollected. The description contains no figures.

Chaerea

This key is a kind contribution of Yuri M. Marusik.
Further genera

1Brigittea