Haplogynae

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Haplogynae
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Araneae Suborder: Araneomorphae Series: Haplogynae
Families
See text.

The Haplogynae are a series of araneomorph spiders.

Unlike the Entelegynae, they lack hardened (sclerotized) female genitalia (epigynes).

Most of the species within this group have six eyes, as opposed to most other spiders. Some members in the family Caponiidae (Caponioidea) even have only four, or two eyes; however, in the family Plectreuridae (Pholcoidea), the spiders have eight eyes. Spiders in the genus Tetrablemma (Tetrablemmidae, Caponioidea) have four eyes.

The cribellate Filistatidae are apparently sister to the mostly ecribellate remainder (Coddington & Levy, 1991, p576).

    +----------------Filistatidae      (109 species)
    |     +----------Caponiidae(1)     (70 species)
    |  +--|  +-------Tetrablemmidae(1) (126 species)
    |  |  |  |  Dysderoidea:
   -|  |  +--|  +--+-Orsolobidae       (177 species)
    |  |     +--|  +-Oonopidae         (ca. 500 species)
    |  |        |----Dysderidae        (ca. 500 species)
    |  |        +----Segestriidae      (106 species)
    +--|  "Scytodoids":     
       |        Pholcoidea:          
       |  +-----+----Pholcidae         (ca. 960 species)
       |  |     |--+-Diguetidae        (15 species)
       |  |        +-Plectreuridae     (30 species)
       +--|     Leptonetoidea:
          |  +--+----Ochyroceratidae   (146 species)
          |  |  |--+-Leptonetidae      (200 species)
          +--|     +-Telemidae         (22 species)
             |  Scytodoidea: (2)
             |  +----Sicariidae        (122 species)
             +--|  
                +--+-Scytodidae        (169 species)
                   +-Drymusidae        (10 species)

• (1) The Caponiidae and Tetrablemmidae are today considered to be in the superfamily Caponioidea.
• (2) The Periegopidae (two species), which are part of the Scytodoidea, were not recognized in 1985.

Cladistic hypothesis for Haplogynae (after Raven, 1985). Line length does not relate to evolutionary distance.

[edit] References

• Coddington, J.A. & Levi, H.W. (1991). Systematics and Evolution of Spiders (Araneae). Annu. Rev. Ecol. Syst. 22:565-592.
• Raven, R.J. (1985). The spider infraorder Mygalomorphae: Cladistics and systematics. Bull. Am. Mus. Nat. Hist. 182:1-180