Linyphiidae: Hilaira Simon, 1884

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1
Males

  2  

- Females

  8  

2
(1)

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Male pedipalp with massive tibia; tibial apophysis distally round; large paracymbium almost square; male prosoma with elevation posterior to head region; male metatarsus I slightly thickened with stout, distant bristles

Hilaira nubigena Hull, 1911

female

- Male pedipalp with narrow, pointed tibial apophysis

  3  

3
(2)

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Tibial apophysis of male pedipalp with pointed, lateral process; tegular apophysis lamellous; male prosoma posterior to eye region strongly elevated

Hilaira pervicax Hull, 1908

female

- Male pedipalp different

  4  

4
(3)
Tibial apophysis of male pedipalp with lateral bulge or vague, broad process

  5  

- Tibial apophysis of male pedipalp without lateral structures

  6  

5
(4)

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Tibial apophysis of male pedipalp with flat, lateral bulge; tegular apophysis with several tips; anterior cheliceral furrow margin with 6, posterior margin with 5 denticles

Oreoneta montigena (L. Koch, 1872)

female

-

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Tibial apophysis of male pedipalp straight, pointed, lateral bulge with a vague tip; anterior cheliceral furrow margin with 5 denticles

Hilaira excisa (O. P.-Cambridge, 1871)

female

6
(4)

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Bulbus of male pedipalp with very long, pointed tegular apophysis

Hilaira herniosa (Thorell, 1875)

female

- Male pedipalp with several tegular apophyses

  7  

7
(6)

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Bulbus of male pedipalp with 2 tegular apophyses and long, pointed tibial apophysis

Oreoneta tatrica (Kulczyński, 1915)

female

-

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Bulbus of male pedipalp with 3 tegular apophyses and long tibial apophysis; male prosoma posterior to eye region slightly elevated

Oreoneta frigida (Thorell, 1872)

female

8
(1)

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Epigynal plate stalk-like elongated, partly covers the transverse oval epigynal groove, anterior margin with small median pocket

Hilaira nubigena Hull, 1911

male

- Epigyne different

  9  

9
(8)

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Epigyne with very broad plate, anteriorly bordered by a flat fold

Hilaira pervicax Hull, 1908

male

- Epigyne different

  10  

10
(9)
Epigyne less differentiated

  11  

- Epigyne distinctly bipartite or backwardly elongated

  12  

11
(10)

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Median epigynal plate narrow; anterior cheliceral margin with 6, posterior margin with 5 denticles

Oreoneta montigena (L. Koch, 1872)

male

-

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Median epigynal plate broad; anterior cheliceral margin with 5 denticles

Hilaira excisa (O. P.-Cambridge, 1871)

male

12
(10)

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Epigyne elongated, reaching beyond epigastric furrow

Hilaira herniosa (Thorell, 1875)

male

- Epigyne distinctly bipartite

  13  

13
(12)

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Epigyne laterally bordered by arc-shaped chitinous bulges

Oreoneta tatrica (Kulczyński, 1915)

male

-

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Epigynal plate wider than long, arc-like bordered posteriorly

Oreoneta frigida (Thorell, 1872)

male

Further taxa

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1. Hilaira gibbosa Tanasevitch, 1982

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2. Hilaira glacialis (Thorell, 1871)

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3. Hilaira incondita (L. Koch, 1879)

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4. Hilaira jamalensis Eskov, 1981

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5. Hilaira nivalis Holm, 1937

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6. Hilaira proletaria (L. Koch, 1879)