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Tenevanica

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Everything posted by Tenevanica

  1. I noticed that there's this weird yellow substance on the side of one of my hisser nymphs. Is this a mold? Should I be concerned? Can I remove it in any way? I know the pic is terrible, but it shows what's going on well enough.
  2. Are oak leaves a requirement? I didn't think they were, but all other conditions are being met.
  3. I'm hoping the male you sent me is doing his work! I've got 5 females and none have produced any babies! I'll definitely share some E. javanica with you if I get nymphs though!
  4. My javanica will not breed! It's getting ridiculous! There aren't any special requirements, are there?
  5. Just keep the sticky side facing out so they can't get stuck on it. Yes, it's fine if the substrate is a little bit moist when you put them in.
  6. Welcome to roachforum! You are Phormic28, correct? L. verrucosa aren't terrible escape artists as they can't climb as nymphs. The adults aren't super tiny, so you can get some nice ventilation holes at the top of the enclosure without the adults escaping. A Kritter Keeper should keep them contained, though I'd still add the plastic wrap to maintain humidity. You probably don't need the vaseline with the L. verrucosa. Your diet will work fine, as I stated on Arachnoboards. Leaves are only required for roaches in the family Polyphagidae. The species you listed are in the family Blaberidae, and will survive, and even thrive without leaves. Oak leaves are still a healthy addition to any roach diet if you can get them though! The hissers should be kept on dry sub with the occasional misting. The glowspots need moist substrate though. Roachcrossing will tell you what the species require in terms of substrate in humidity under the "Detailed Species Stats" dropdown menu. The vaseline and saran wrap will all but eliminate escapes from these two species.
  7. The lesser mealworms will do well in both humid and dry conditions as stated above. I've seen them climb eggcartons, but I think you're right in the fact that they'd stay in the substrate and eat whatever's down there.
  8. Dermestid beetles do OK wet conditions from what I hear. They're very hardy. You could also try introducing Alphitobias diaperinus, as those will eat the dead bodies.
  9. As taken from this wikipedia page: Like other species in the genus Lucihormetica, L. luckae's back carapace features one small and two large spots that glow when exposed to light (autofluorescence), perhaps to mimic the appearance of the toxic click beetle (Pyrophorus) that emits light at the same wavelength, in which case this would be an instance of Batesian mimicry.[1][2] The evidence for genuine bioluminescence in Lucihormetica cockroaches is anecdotal and inconclusive,[3][4] though there is evidence for autofluorescence.[5]
  10. I linked to that paper above Lucihormetica lukea is a species that has somewhat recently gone extinct, but part of its description states that the spots on the pronotum of males do glow. If I can find it I'll link to it, but this is the only scientific description of a Lucihormetica species glowing. L. subcincta has been reported to glow by some hobbyists, but who knows how valid those statements were. L. verrucosa, the species the paper focuses on, has never been observed to glow.
  11. The glowing bacteria hypothesis wasn't addressed in that paper. However, bacteria would make the most sense to me, as bioluminescent bacteria are a very common means of bioluminscense in higher animals. The luciferine pigment, the pigment that glows in the mushrooms, would be denatured during the digestive processes of the roach, so unless it has some special mechanism of preserving the pigment, the glow would likely not continue. It seems improbable to myself and other hobbyists that it's glowing mushrooms doing the work. There was an Arachnoboards thread (that I can't find now, of course!) where someone tried adding a species of bioluminscent mushroom to their L. subcincta cage, and they observed no glowing of the pronotums. I also read somewhere that only subcincta and lukea (L. lukea is now extinct) have pronotum spots that are observed to glow. I don't think verrucosa spots have ever been seen to glow. Go for it though, I'd be interested in your findings. A glow vivarium sounds interesting, especially if the roaches get in on the fun!
  12. From what I understand, it's a bacteria that causes the spots to glow. The glowing organs don't work like that of a firefly. The roach is unable to make itself glow, it has to have the correct bacteria. I believe it's a myth that glowing mushrooms as a food will recreate bioluminescence. Here's a good paper on the morphology of the pronotum spots: http://www.academia.edu/7243261/Courtship_Mating_and_Organisation_of_the_Pronotum_in_Lucihormetica_verrucosa
  13. I'm working on that. With how cheap it is to sequence genomes nowadays, I'm working with some of my professors and their colleagues to see if we can get the genomes of Gromphadorhina sequenced. I suspect they're all the same species, and I'm wondering if my hypothesis would be supported by genetic evidence. Perhaps we can try Therea and Blaberus as well. No promises here though because genetic sequencing isn't really a dollar store job, even if it is going down in cost. I suspect I won't get the funding, as I'm still an undergrad. I will get the sequences done eventually though, you mark my words! I'm going to set cockroach taxonomy straight!
  14. I agree. I think that petiveriana and bernhardti are the same species.
  15. Are you sure those aren't petevariana? I don't think bernhardti is really a species. Would you mind getting a picture of their underwings? I'm curious to compare your "bernhardti" to my petevariana. The underwing is supposedly what differentiates the two "species."
  16. I'm sure most people would think that disappearing roaches would be quite delightful actually.
  17. Good thing you didn't forget about that. Thanks, I'm looking forward to it to!
  18. Yeah, that's what I had feared. Hopefully I'll get a male to mature soon so I can mate this species for real!
  19. Thanks for the info. I assumed it was an ooth. I couldn't find a male anywhere in the container though. Is there an record of parthenogenesis in this species? Could she be laying an infertile ooth? Also, how long does it take for the oothecae to hatch in your experience?
  20. I noticed one of my Parcoblatta divisa has matured, and I was wondering if she happens to be just about to lay an ootheca. She's been mature for less than a week, so it's strange to think she'd be laying so soon. I wasn't even aware a male had matured. Sorry for the terrible picture. Plastic distorts the pic in a strange way, and it was taken in low light with my phone. I'm going to assume this is an ootheca, so I must ask, how long does it take for it to hatch? Should I move it to another container to avoid it being chewed on?
  21. You have to mist more frequently. There are species that abhor wet substrate, but still require high humidity. These are very high maintenance species, as you have to mist them ever day or so. Flooding one corner is inviting mites, mold, and disease. A water dish might seem appropriate, but unlike T's, roaches can drown.
  22. First, the plural of Genus is genera. I believe that every hisser species can be kept about the same. They do come from the same environment/s, so it would make sense for them to have similar requirements. Hissers like dry substrate, but humid air. This can be achieved by misting frequently. Dry your E. javanica out. Mine are kept on dry substrate, and do very well. I don't know where you got the idea that they needed it moist, but they like it dry.
  23. I was in my rearing room this morning, and I found this guy crawling across my floor. I don't have roaches in my house, and it doesn't match any of the common pest species. It must be an escape then! The problem is, I don't keep any species with nymphs that resemble this one. I did a little test, and I've determined it can climb. My (non-hybrid supposedly) Gromphadorhina portentosa show this coloration in larger nymphs, But, it's just under a centimeter long, and hisser nymphs don't get that color until later on in their development. Please help me, because the sooner I can identify the species, the sooner I can fix the escape problem! I currently keep: 1.7.0 Elliptorhina javanica X.X.X Blaberus craniifer X.X.X Blaptica dubia X.X.X Gromphadorhina portentosa 1.1.0 Aeluropoda insignis X.X.X Nauphoeta cinerea 0.0.10 Gyna centurio 0.0.10 Hemiblabera tenebricosa X.X.X Gyna lurida X.X.X Eublaberus posticus X.X.X Periplaneta australasiae 0.0.12 Blaberus sp. "Venezuela" X.X.X Oxyhaloa deusta X.X.X Gyna caffrorum 0.0.12 Pycnoscelus nigra 0.0.12 Pycnoscelus striatus X.X.X Parcoblatta divisa X.X.X Parcoblatta lata Thanks
  24. That's the issue, right there! I would leave them in the colony for now. Let them mate with females, so you can at least preserve the gene and re-isolate when you get enough individuals.
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