Redback spiders …

… are probably native to Australia, not introduced … as I argue here:



8 responses to this post.

  1. Posted by Jim on February 13, 2016 at 9:55 am

    Spiders have always kind of intrigued me since I was a kid yet my knowledge of them has always been very limited.

    BTW, it seems like Australia always seems to have the most poisonous creatures in the world. But at least an anti-venom treatments exists.


  2. Posted by Jim on February 15, 2016 at 5:47 am

    Ever since I heard about the Brazilian Wandering Spider occasionally appearing on bananas I sometimes get a little leery buying them, ha. Why? Because they’re the world’s most venomous spider.


  3. Posted by Julian O'Dea on June 8, 2017 at 1:36 am

    “The only host record for Australian Agenioideus is given inEvans et al. (1981), who record A. nigricornis as a parasitoid ofSteatoda femorale (Thorell) (Theridiidae). L. hasselti has asimilar biology to this species, and it may be that A. nigricornisis a more general hunter of theriid spiders that live in similarsituations close to the ground. However, given the humanmedical importance of L. hasselti (e.g. Bonnet 1999), this newhost record is noteworthy. Previously, only egg parasitoids(Hymenoptera: Eurytomidae and Ichneumonidae) or eggpredators (Neuroptera: Mantispidae) have been recorded forL. hasselti (Table 1; Austin 1985; Bouçek 1988). The impact ofA. nigricornis and other parasitoids/predators of L. hasselti isunknown at present but should be investigated in future studies.”

    Systematics of Australian Agenioideus Ashmead (Hymenoptera: Pompilidae) with the first record of a spider wasp parasitizing Latrodectus hasselti Thorell (redback spider) (PDF Download Available). Available from: [accessed Jun 8, 2017].


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