Kauaʻi cave wolf spider
| Kauaʻi Cave Wolf Spider | |
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| Scientific classification | |
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Adelocosa
Gertsch, 1973
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A. anops
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| Adelocosa anops Gertsch, 1973 [2]
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The Kauaʻi cave wolf spider (Adelocosa anops) also known to local residents as the "blind spider", is only known to occur in a few caves in a lava flow with an area of 10.5 square kilometres (4.1 sq mi) in the Kōloa–Poʻipū region of Kauaʻi, Hawaiian Islands, and only six populations are known to exist.[3] While their nearest surface-dwelling relatives have large eyes, this species has completely lost its eyes. They reach a body length of about 20 millimetres (0.8 in), are reddish brown and completely harmless to people.[4] Unlike most wolf spiders, it produces only 15 to 30 eggs per clutch. The female carries the egg sac in her mouthparts until the spiderlings hatch.[3]
One of its primary prey species is the Kauaʻi cave amphipod, Spelaeorchestia koloana, which is only known from nine populations and reaches about 10 mm (0.4 in) in length.[4] These feed on decomposing plant matter. Both species were discovered in 1971. Counts have never documented more than 30 spiders or 80 amphipods.[4]
See also
References
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