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Synthetonychia cornua

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Synthetonychia cornua
Synthetonychia cornua Forster-1954
Synthetonychia cornua Forster, 1954 (from original description)









Synthetonychia cornua Forster, 1954 belongs to the genus Synthetonychia (Laniatores:Synthetonychiidae).



  • S.c. male(1) (holotype): Canterbury Museum, Christchurch; #893[1]
  • S.c. female(1) (allotype): Canterbury Museum, Christchurch; #894[1]
  • S.c. male(1) (paratype): Dominion Museum, Wellington; #2/903[1]
  • S.c. male(1) (paratype): Dominion Museum, Wellington; #2/902[1]


(from Forster, 1954[1])

  • Color: Reddish-brown
  • Body: Carapace finely granulate, tergal region with the normal pattern. The eyes are separated from the anterior margin of the carapace by a distance equal to 3/10 of the length of the scute, and separated from each other by a distance equal to 2x their diameter. The shape of the genital operculum is shown in Fig. 724, without antero-lateral lobes, wider at base than it is long in ratio of 7:4.
  • Genitalia: Aedeagus slender, spear-like, with a long, slender spine on the ventral surface at about 1/3 as shown in Fig. 723. Ventral plate short and broad with six setae.
  • Chelicerae: Typical.
  • Pedipalls: (Fig 720). Trochanter with a rounded tubercle on the disto-ventral surface and a stronger, more conical, process on the dorsal surface as shown in Fig. 721. There is a small tubercle on the proximo-dorsal surface of the femur. The disto-dorsal process of the tibia is strong, sharply pointed. The tarsus is slender, almost straight, spine short and stout, equal to ½ length of tarsal claw.
  • Legs: Smooth apart from a few small scattered tubercles. Tarsal formula Tarsal claws of legs 3 and 4 as shown in Fig. 725, arolium not extending beyond the median branch.
  • Measurements (mm): Scute: 1.20x1.12; Legs: 3.42, 4.54, 3.71, 4.33; Pedipalp: 2.59; Chelicera: 0.75
  • Female: Similar in structure to male. Genital operculum wider than long in ratio of 6:5. Pedipalp as shown in Fig. 722, trochanter and tibia without processes, tarsus short and stout.
  • Measurements (mm): Scute: 1.32x1.10; Legs: 2.61, 3.51, 3.16, 3.77; Pedipalp: 1.98; Chelicera: 0.59


  • Location: Caswell Sound (Fiordland National Park), New Zealand (South Island)[1]


  • Forster, 1954:276[1]
  • World Checklist[2]

Additional images - GalleryEdit


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Forster, R.R. (1954) The New Zealand harvestmen (sub-order Laniatores). Canterbury Museum bulletin, Christchurch, 2, 1–329.
  2. Kury AB, Mendes AC & Souza DR (2014) World Checklist of Opiliones species (Arachnida). Part 1: Laniatores – Travunioidea and Triaenonychoidea. Biodiversity Data Journal 2: e4094. doi: 10.3897/BDJ.2.e4094

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