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Atrax christenseni One of several shots I took of this female, body length 45 mm. <br />
<br />
UPDATE January 2025: Exciting development in the world of arachnology, and on my doorstep as it were. Seven years ago almost to the day, I came across my first Sydney funnel web. This is the time of year that males will be wandering in search of the females and I&#039;d learned of several very large specimens having been found within a 25km radius of where I live. Scientific examination (gene sequences, in combination with fine morphological detail) has shown that Atrax in this area are indeed a new species and have been named Atrax christenseni. The new species is named in honour of Kane Christensen for his dedication to documenting aspects of funnel web behaviour and collecting specimens for study. So, I have to amend my records of sightings. (Males of this new species can be separated from the Sydney funnel web and the Southern Sydney funnel web by the extra-long palpal tibia and embolus). Sadly, our eight-legged icon is in decline. Loss of habitat and illegal trafficking being cited as probable main causes. For this reason, collection sites were not included in research papers. <br />
<br />
<a href="https://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-024-02332-0" rel="nofollow">https://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-024-02332-0</a> Araneae,Atracidae,Atrax christenseni,Australia,Macro,Mygalomorphae,Newcastle funnel-web spider,Spider,Venomous,arthropod,fauna,invertebrate Click/tap to enlarge PromotedSpecies introCountry intro

Atrax christenseni

One of several shots I took of this female, body length 45 mm.

UPDATE January 2025: Exciting development in the world of arachnology, and on my doorstep as it were. Seven years ago almost to the day, I came across my first Sydney funnel web. This is the time of year that males will be wandering in search of the females and I'd learned of several very large specimens having been found within a 25km radius of where I live. Scientific examination (gene sequences, in combination with fine morphological detail) has shown that Atrax in this area are indeed a new species and have been named Atrax christenseni. The new species is named in honour of Kane Christensen for his dedication to documenting aspects of funnel web behaviour and collecting specimens for study. So, I have to amend my records of sightings. (Males of this new species can be separated from the Sydney funnel web and the Southern Sydney funnel web by the extra-long palpal tibia and embolus). Sadly, our eight-legged icon is in decline. Loss of habitat and illegal trafficking being cited as probable main causes. For this reason, collection sites were not included in research papers.

https://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-024-02332-0

    comments (4)

  1. Atrax christenseni Female, body length 45 mm. The body position seen here in this female is not aggression but defence. When operating at such heightened levels, she has her defences fully primed and ready to go...that is indeed venom seeping from those incredible fangs. She kept this stance for a minute or so, then went about investigating quite calmly. <br />
<br />
UPDATE January 2025: Exciting development in the world of arachnology, and on my doorstep as it were. Seven years ago almost to the day, I came across my first Sydney funnel web. Pictured here, she is in a defensive posture. This is the time of year that males will be wandering in search of the females and I'd learned of several very large specimens having been found within a 25km radius of where I live. Scientific examination (gene sequences, in combination with fine morphological detail) has shown that Atrax in this area are indeed a new species and have been named Atrax christenseni. The new species is named in honour of Kane Christensen for his dedication to documenting aspects of funnel web behaviour and collecting specimens for study. So, I have to amend my records of sightings. (Males of this new species can be separated from the Sydney funnel web and the Southern Sydney funnel web by the extra-long palpal tibia and embolus). Sadly, our eight-legged icon is in decline. Loss of habitat and illegal trafficking being cited as probable main causes. For this reason, collection sites were not included in research papers.<br />
<br />
https://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-024-02332-0 Arachnid,Araneae,Atrax christenseni,Australia,Invertebrate,Mygalomorphae,Spider,Sydney funnel-web spider,arthropod,macro,venomous
    Posted 7 years ago
  2. Great shot - but you can keep those in your hemisphere thanks very much ;) Posted 7 years ago
  3. Congrats on helping to pioneer this species and hats off in being so thorough to revisit an observation from 6 years ago! Posted 7 months ago
  4. A real stunner Ruth. Posted 7 months ago

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Atrax christenseni is an Australian Funnel-web spider in the Atrax genus.

Similar species: Spiders
Species identified by Ferdy Christant
View Ruth Spigelman's profile

By Ruth Spigelman

All rights reserved
Uploaded Aug 29, 2018. Captured Jan 15, 2018 09:47.
  • Canon EOS 60D
  • f/10.0
  • 1/99s
  • ISO250
  • 100mm