Uloboridae: Hyptiotes Walckenaer, 1837
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1

Males

  2  
-

Females

  5  
2
(1)

Length of prosoma and cymbium about 1.4 – 1.6 mm. Bulbus (in retrolateral view) apically with a large and pointed median apophysis

  3  
-

Length of prosoma and cymbium about 0.9 – 1.25 mm. Bulbus apically different

  4  
3
(2)

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cp

The embolus originates almost in the middle of the bulbus. Length of prosoma and cymbium about 1.4 mm. In humid habitats, France

Hyptiotes dentatus Wunderlich, 2008
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male Pedipalp, prolateral view
(Wunderlich 2008c)

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male Pedipalp, retrolateral view
(Wunderlich 2008c)

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male Bulbus, retroventral view
(Wunderlich 2008c)
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male Prosoma, frontal view
(Wunderlich 2008c)

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male Femur III, prolateral view
(Wunderlich 2008c)
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cp

The embolus originates at the basis of the bulbus. Length of prosoma and cymbium about 1.6 mm. Not in humid habitats. Western Palearctic

Hyptiotes paradoxus (C. L. Koch, 1834)

female
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male Pedipalp
(Wiehle 1953)

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male Pedipalp, ventral view
(Brændegaard 1966)

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male Pedipalp, ventral view
(Drensky 1939)
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male Pedipalp
(Roberts 1995)

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male Pedipalp
(Wiehle 1953)

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male Pedipalp
(Loksa 1969)
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male Pedipalp
(Locket & Millidge 1951)

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male Pedipalp and prosoma
(Locket & Millidge 1951)

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Prosoma, dorsal view
(Heimer & Nentwig 1991)
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Eyes, dorsal view
(Loksa 1969)

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Calamistrum
(Locket & Millidge 1951)
4
(2)

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cp

Bulbus apically with a complicated structure that includes a sclerite bent in a right angle. Greece, southern Russia

Hyptiotes gerhardti Wiehle, 1929

female
speciesimage

male Pedipalp, retrolateral view
(Wunderlich 2017)
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Bulbus apically without such a structure. Western Palearctic

Hyptiotes flavidus (Blackwall, 1862)

female
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male Pedipalp, prolateral view
(Breitling 2020)

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male Pedipalp, retrolateral view
(Hänggi & Gloor 2020)

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male Pedipalp, prolateral view
(Hänggi & Gloor 2020)
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male Pedipalp, retrolateral view
(Bosselaers 2018)

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male Pedipalp, retrolateral view
(Barrientos et al. 1985)

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male Apical part of bulbus
(Simon 1914)
5
(1)

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cp

Length of the prosoma 1.1 – 1.5 mm, epigynal groove usually with a median ridge, posterior margin of the epigyne protruding, convex medially, receptacula seminis small, spaced by 3 to 4 times their diameter, introductory ducts long and coiled. Western Palearctic

Hyptiotes flavidus (Blackwall, 1862)
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female Epigyne
(Simon 1914)

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female Epigyne
(Bosselaers 2018)

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female Epigyne
(Wunderlich 2017)
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female Epigyne, antero-ventral view
(Wunderlich 2017)

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female Vulva, ventral view
(Breitling 2020)

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female Vulva, dorsal view
(Hänggi & Gloor 2020)
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Different

  6  
6
(5)

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cp

Length of the prosoma 1.4 – 1.7 mm, epigynal groove without a median ridge, posterior margin of the epigyne straight, receptacula seminis large, spaced by their diameter, introductory ducts long and coiled. Greece, southern Russia

Hyptiotes gerhardti Wiehle, 1929

male
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female Epigyne
(Wiehle 1964a)

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female Vulva
(Wunderlich 2017)
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Length of the prosoma about 1.8 mm, epigynal groove anteriorly wider than in the other species, almost circular, posterior margin of the epigyne concave medially, receptacula seminis large, spaced by their diameter, introductory ducts short, describing about a single loop only. Western Palearctic

Hyptiotes paradoxus (C. L. Koch, 1834)

male
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female Epigyne
(Loksa 1969)

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female Epigyne
(Locket & Millidge 1951)

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female Epigyne
(Wiehle 1953)
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female Epigyne
(Roberts 1995)

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female Epigyne
(Drensky 1939)

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female Epigyne
(Brændegaard 1966)
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female Vulva
(Wiehle 1953)

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female Habitus
(Locket & Millidge 1951)
With kind permission of the author, this key has been modified from Wunderlich J (2017) Descriptions, notes and synonyms of some mainly Mediterranean and Macaronesian spiders (Araneae) of various families. Beiträge zur Araneologie 10: 298-326 (Publishing House Joerg Wunderlich)