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The burrow, egg-sac and early life stages have not been described by any author. Habitat: Mallee heathlands, low sandplain vegetation in arid areas. Distribution: WA, SA, NT. Photograph: Near Marlee Homestead, WA; male is shown courting the female in their native habitat on red sand; male: 15 mm body length; female: 17 mm body length. (Plate 21) Hogna senilis (Koch, 1877) Description: Body and legs mostly pale brown to darker brown; dorsal surface of cephalothorax dark brown to chocolate-brown, bordered in pale to darker buffbrown with a broad, median, longitudinal line; abdomen mostly pale brown with variable, small transverse, darker brown marks on the dorsal surface.

It is the only member of the Oxyopidae known from New Zealand, which poses some very interesting questions as to why that land mass has remained devoid of these spiders for so long. The other Australian genus is Peucetia, represented by only one species, P. albescens Koch, 1878 from northern Queensland. Nothing has been recorded on its biology and behaviour. The genus represented here is Oxyopes. (Plate 23) Oxyopes elegans Koch, 1878 Description: Body and legs pale green to pale greenish-brown, with two series of brown to dark brown longitudinal marks on the dorsal surface of the cephalothorax and abdomen; abdomen with additional brown and black marks on the lateral margins; Spiders of Australia 53 the pattern is often variable; spines on legs black; body length 4-5 mm (males); 5-7 mm (females); males smaller and more slender than the females.

The burrow of this species is unlike that of many wolf spiders, in that it does not possess a silken/earth lid nor is there any evidence of a mound or elevated rim of soil, sticks or pebbles, around the entrance of the burrow. The spiders prefer to build their burrows in open areas that are not covered with leaf litter, twigs and other debris and do not appear to shelter the burrow entrance under rocks, herbage or logs, as do many other wolf spiders. The depth and diameter of their burrows varies with the age of the spider and the type of soil acting as the substrate; in red loamy soils, the burrows may reach up to 25 cm deep but in harder, more compact clayey soils, the burrow may only measure a maximum of about 10 cm deep; the diameter of the burrow varies from 8-16 mm.

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an introduction to ringand modules

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