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What

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Everything posted by What

  1. Not sure if it is the same for the Gongylus I dealt with as these...but I think sexing can be done by counting the number of segments their abdomen has for quite a few species. As for male/female having more...I dont remember, lol. Try checking over here.
  2. Interesting, something else to know is that you can get it off of google books. At least I am fairly certain that is where my copy came from. Always my first stop when looking for texts, occasionally they are available as ebook downloads in pdf format for free - though perhaps not since google launched their ebook store. As for Orin's question about the legality...almost certainly in the grey zone of just how far "fair use" can be stretched for personal use but the site linked above's presentation of it is likley in violation of the book's copyright. Cremm.es seems to be a digital library centered around natural history texts though, perhaps it would be covered under a "research" or "education" clause in the laws...doubtful though. Anyways - we should all be thankful that it has become available.
  3. They are from Santa Cruz Co., AZ you can probably guess more specifically if I said the female was from somewhat near a lake.
  4. Zephyr thinks springtails are the end all be all of tank cleaning...in truth to get everything you really would need *both* and neither cause any real harm to roaches in my experience. There are probably other things we also dont have in our tanks that also would help...only way is to experiment on your own to find ways to apply solutions found by others in ways relevant to your own collection. A couple other things I have experimented with are multiple types of isopods, small millipedes, worms, and I think I even tried snails...all work to one level or another but they all also have their drawbacks.
  5. They seem pretty easy so far... but I cannot really say for certain. There looks to be around 10-20 of them.
  6. Not the greatest photo, but man are these things small. I have probably 15-20 of them.
  7. Being from PA its almost certainly Latrodectus variolus, or the northern widow. Another good way to tell that is that L. mactans (southern widow) typically have full hourglasses while L. variolus and L. hesperus both are known to have reduced or half hourglasses(such as this individual) - pattern is not always an effective means of distinction though. Very nice find and spider. As an aside about L. geometricus, these are probably one of the most successful and widespread invasive species known to man... In my area of Southern California they have been out-competing our native L. hesperus in residential areas.
  8. It might just be me...but large isopods like Porcellio laevis or P. dilatus seem to be a better choice than a species of roach, even if not already found in your area (but *I* would frown upon such a practice, your choice). You would end up with next to no plant damage too. Adding a species of roach, just by their nature, would ensure escapees into the surrounding environment... The niche you are trying to fill is also typically/more easily filled by isopods in nature, with roaches contributing to a lesser extent.
  9. It is indeed still white. I checked it this morning and was happily surprised to find it hadnt changed on me. Unfortunately due to some personal stuff I didnt get back out to search for more yet.
  10. Both were found in the sand around a tree and next to a patch of iceplant(Carpobrotus edulis). The sand had a high organic matter content of about 50/50 leaves/bark/twigs/etc to sand. I havent found a male yet, I didnt even realize I had an Arenivaga sp. so close to me...was under the impression they were mostly desert dwellers and I have never heard of a coastal CA sp. Small, the nymph is probably just over .25in and the female is around .5in, right around the same size as this one from AZ. Edit: Also, after some further pondering I am revising my adult female thought to the roach being a nymph 1 molt shy of that.
  11. Found these two at the beach... I think the larger one is an adult female and the smaller is a female nymph. I know what Im doing this Friday night...sifting!
  12. These were collected in southern AZ. The female was probably about 10mm of wing, only about 8mm of body. Zephyr can give measurements when he gets her in the mail, she should stand still for him.
  13. In my experience, no, fluon(teflon) will not melt. It takes quite a bit of practice to get good at applying it, but it is by far my favorite barrier.
  14. So I herd you liek mudki-err... sand roaches here... Sooooo...here is an Arenivaga sp. female from AZ.
  15. I have a lot of success with both "oak leaf mold" bought from the local garden supply store (great for "capping" in ground plantings) and oak leaves that I have collected just around my area. I doubt pesticides are something to be concerned over if you let the leaves start to decay and decompose to the point at which roaches seem to prefer them anyway.
  16. Zephyr's photos show these pretty well, here is just a fun shot:
  17. http://www.flickr.com/photos/i_am_subverted/ Love the red wing stubs on the females.
  18. The Cadaghi tree is not in the Eucalyptus genus, its proper binomial is Corymbia torelliana. I would personally go ahead and try the E. robusta leaves, if you have access to them, BUT I would not feed them fresh, freshly dried, or any leaves that were not well on their way down the road to decomposing.
  19. Im not really sure that was needed, but if it makes you feel better whatever. I would be more than happy to take up you on your challenge...if I currently kept a species that was found naturally near Eucalyptus. Maybe I will grab some of the B. lateralis I find living under cut down Eucalyptus trees just for the heck of it next time...
  20. I was not aware that I was known for misleading arguments, but I am known for enjoying myself in an "argument"(though I prefer discussions, occasionally debates, arguments generally dont involve any substance just a disagreement)...so I will just take that to be what you are meaning with that. Im not going out of my way here to cause problems, Im not starting arguments, and I am not making any misleading or unsupported statements (that I know of). Zephyr and your statements re: the beetles might be completely correct, but I cannot find any information supporting it, and I did look...the information I did find states that there are a few species(that without looking up I cant remember) which are used for commercial eucalyptus oil and that these species are the ones with the highest concentrations of the toxic oils. So you are supporting your absolutely stated generalization(bolded for other's sakes) with misleading information in your post it would seem, then. The Eucalyptus in California(at least) starting in the 1850s were introduced by Aussies coming for the gold rush, these were to be used for timber, firewood, and later in the 1900s they were planted en masse for use as railroad ties. I can find no reference as the Eucalyptus in the USA being originally imported as "landscape varieties" OR due to them being "known to be resistant to insect infestation or consumption". I also can find no source for the "Non-toxic varieties can only be found in Australia"...and given that E. gunnii which is used as a feeder for various inverts in Europe can also be found in the USA (a local nursery even sells the trees and assorted other species)... Your claim of my making misleading arguments looks rather...ironic...from here. Anyways, as I said, there definitely are toxic species in the USA and there definitely are safe species...that does also depend on if the person is trying to feed Eucalyptus to a species that might encounter Eucalyptus in the wild or as something for a species completely alien to it(which, if you have plenty, why not try with a select few?). Your absolute generalization(lol) is what was the problem here, not my making the point that "hey, there are quite a few inverts that eat this stuff, there are loads of sp. in the USA...cant all be toxic you just have to find the safe species". I was not taking that out of context at all, I was interpreting it in a manner that your omission of of the fact that you were speaking of the other endemic species. Your post after Zephyr's sort of seems out of place when interpreted the way you intended...especially without any sort of documentation, species name, hostplant info, or anything else... just a vague mention of a beetle that eats something toxic to katydids and caterpillars after a post positing that the tortoise beetles I mentioned are resistant to Eucalyptus toxins... My apologies for misinterpreting you.
  21. What

    Book lice?

    I would say most places of AZ are just desert, the ones I have experience with are from Southern California in creosote scrub habitat about 50yrds away from a grove of oaks. They live on the underside of wood debris/rocks.
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