| Haplogynae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Scientific classification | ||||||||||||
|
||||||||||||
| Families | ||||||||||||
|
See text. Arthropods are Animals belonging to the Phylum Arthropoda (from Greek ἄρθρον arthron, " Joint " Arachnids are a class ( Arachnida) of joint-legged Invertebrate Animals in the subphylum Chelicerata. Spiders are Predatory Invertebrate Animals that have two body segments, eight legs no chewing mouth parts and no wings The Araneomorphae are a Suborder of Spiders They are distinguished by having Chelicerae (fangs that point diagonally forward and cross in a pinching action |
The Haplogynae are a series of araneomorph spiders. Taxonomic rank ( rank, category, taxonomic category is an abstract term used in the Scientific classification, or Taxonomy, of organisms The Araneomorphae are a Suborder of Spiders They are distinguished by having Chelicerae (fangs that point diagonally forward and cross in a pinching action
Unlike the Entelegynae, they lack hardened (sclerotized) female genitalia (epigynes). The Entelegynae are a subgroup of araneomorph spiders Almost all members of this group unlike most members of Haplogynae, have eight eyes and females have The epigyne or epigynum is the female genital opening in Spiders It is of special interest to people who study spiders because the exact shape of the epigyne
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 of the Ecribellate Haplogyne family Caponiidae are unusual in that most species have only two eyes which is unheard of in other spiders Plectreurid spiders (family Plectreuridae) belong to a small family confined to the North American Deserts and the island of Cuba. Spiders in the genus Tetrablemma (Tetrablemmidae, Caponioidea) have four eyes. The spider genus Tetrablemma is unusual in possessing only four eyes a trait only found elsewhere in most species of the family Caponiidae. The Tetrablemmidae are a spider family with 126 described species in 29 genera that occur throughout the world tropics
The cribellate Filistatidae are apparently sister to the mostly ecribellate remainder (Coddington & Levy, 1991, p576). A cribellum is a kind of comb-like device in certain Spiders used to separate fibers of Silk drawn from its Spinnerets into many extremely fine fibers giving
+----------------Filistatidae (109 species)
| +----------Caponiidae(1) (70 species)
| +--| +-------Tetrablemmidae(1) (126 species)
| | | | Dysderoidea:
-| | +--| +--+-Orsolobidae (177 species)
| | +--| +-Oonopidae (ca. The crevice weaver spiders (super-family Filistatoidea, family Filistatidae) contain primitive Cribellate, Haplogyne, weavers Spiders of the Ecribellate Haplogyne family Caponiidae are unusual in that most species have only two eyes which is unheard of in other spiders The Tetrablemmidae are a spider family with 126 described species in 29 genera that occur throughout the world tropics The Dysderoidea are a Superfamily of araneomorph spiders They contain four families of six-eyed spiders Dysderidae The Orsolobidae are a six-eyed Spider family with about 180 described species in 28 genera The Spider family Oonopidae (Goblin spiders includes about 450 Species in about 65 genera worldwide 500 species)
| | |----Dysderidae (ca. The family Dysderidae ( woodlouse hunters, sowbug-eating spiders or cell spiders) are araneomorph Spiders found primarily in 500 species)
| | +----Segestriidae (106 species)
+--| "Scytodoids":
| Pholcoidea:
| +-----+----Pholcidae (ca. The tube-dwelling spiders (family Segestriidae) consist of two large and widespread genera ( Segestria and Ariadna) and one Monotypic Genus The Pholcoidea are a Superfamily of araneomorph spiders They contain two families of six-eyed spiders Diguetidae The Pholcidae are a Spider family in the suborder Araneomorphae. 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. The coneweb spiders of the family Diguetidae are six-eyed haplogyne (lacking hardened female genitalia or Epigyne) Spiders that live in Plectreurid spiders (family Plectreuridae) belong to a small family confined to the North American Deserts and the island of Cuba. The Leptonetoidea are a Superfamily of araneomorph spiders They contain three families of six-eyed spiders Leptonetidae The Ochyroceratidae are a six-eyed spider family in the Leptonetoidea superfamily with 154 described species in 14 genera Leptonetidae if a family of relatively primitive Haplogyne (lacking hardened external female genitalia Spiders which includes 15 genera and nearly The Telemidae are a six-eyed Spider family with 22 described species in seven genera The Scytodoidea are a Superfamily of spiders They contain four families of six-eyed spiders Drymusidae Periegopidae The spider family Sicariidae is a family of venomous Spiders known for their Necrotic venom Spitting spiders (family Scytodidae) are Spiders of the Genus Scytodes and their relatives The Drymusidae are a small spider family with ten species in one genus The Caponioidea are a Superfamily of araneomorph spiders They contain two families of six-eyed spiders Caponiidae
- (2) The Periegopidae (two species), which are part of the Scytodoidea, were not recognized in 1985. The Spider family Periegopidae consists of only one genus with two species
- Cladistic hypothesis for Haplogynae (after Raven, 1985). Line length does not relate to evolutionary distance.
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