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  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.
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