Dorymetaecus is a monotypic genus of Australian araneomorph spiders in the family Phrurolithidae, containing the single species, Dorymetaecus spinnipes. It was first described by William Joseph Rainbow in 1920,[2] and has only been found on Lord Howe Island.[1] Rainbow died in November 1919, shortly before publication of the work this species is described in.
| Dorymetaecus | |
|---|---|
| |
| female D. spinnipes | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Phrurolithidae |
| Genus: | Dorymetaecus Rainbow, 1920[1] |
| Species: | D. spinnipes
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| Binomial name | |
| Dorymetaecus spinnipes Rainbow, 1920
| |
Description
editThe holotype was found on Kentia palms, and only the female of this species is known. Its cephalothorax is 1.5 millimetres (0.059 in) long and 1 millimetre (0.039 in) wide. The opisthosoma is 2.1 millimetres (0.083 in) long and 4 millimetres (0.16 in) wide.[2]
Cephalothorax obovate, broad, well arched, yellow, with two dark-brown wavy lines behind the eyes, and with black lateral margins, close to which are smoky-brown patches. Pars cephalica not raised, sloping gently forward, narrow in front, truncated, segmental groove faintly distinct; clypeus narrow. Pars thoracica sloping rearwards, radial grooves moderately defined; median stria short, distinct, lateral margins slightly reflexed; marginal band narrow. Eyes in two recurved rows of four each, close together, rear median ones widest apart; front row shorter, close to edge of clypeus; posterior eyes larger. Legs yellow, long, robust, bespined; first and second pairs longest and strongest; tibia i and ii armed with seven pairs of long, strong yellow spines, and meta-tarsi of same with four pairs; bases of spines large, black; spines on legs iii and iv short and weak. Relative lengths, 4, 1, 2, 3. Palpi concolorous, moderately long, armed with a few rather long spines. Falces yellow, short, arched, not strong; inferior ridge of each falx armed with two very small teeth, and the superior with two even smaller ones; fang short, weak. Maxillae short, robust, arched, yellow, apices inclined inwards, constricted near base. Labium concolorous, arched, short, broad, about as long as width of base; apex rounded. Sternum cordate, broad, yellow, arched, terminating obtusely between fourth pair of coxae. Abdomen ovate, arched, slightly overhanging base of cephalothorax, yellow; superior surface ornamented with smoky-brown markings. Epigynum a moderately large plaque, the margin of which is dark brown and raised. Spinnerets yellow, short; superior pair cylindrical, biarticulate, terminal segment shortest; inferior pair rather stout; coniform, biarticulate, apical segment minute, dome-shaped.[2]
References
edit- ^ a b "Gen. Dorymetaecus Rainbow, 1920". World Spider Catalog Version 20.0. Natural History Museum Bern. 2019. doi:10.24436/2. Retrieved 2019-05-18.
- ^ a b c Rainbow, W. J. (1920). "Arachnida from Lord Howe and Norfolk Islands". Records of the South Australian Museum. 1: 229–272.
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