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Forcep

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Posts posted by Forcep

  1. There's not a single observation that prove Lucihormetica actually glow.

    http://s3.amazonaws.com/academia.edu.documents/33860605/Greven_Zwanzig_Courtship_Mating_and_Organisation_of_the_Pronotum_in_the_Glowspot_Cockroach_Lucihormetica_verrucosa_Entomo_2.pdf?AWSAccessKeyId=AKIAJ56TQJRTWSMTNPEA&Expires=1466796404&Signature=CPCL4X7xoWujWRGUosBi3DliU5k%3D&response-content-disposition=inline%3B%20filename%3DCourtship_Mating_and_Organisation_of_the.pdf

    Above is a thorough study of the mating behavior and morphology of L. verrucosa. Based on dissections of live specimens, no evidence shows the spots are bioluminescent organs. The spots are basically a cushion of fat body cells underlying a thin layer of transparent cuticle.

    I understand how appealing a "glowing roach" sounds to a blattodea lover like you and me, but from the materials I've read so far, there's just no strong evidence showing that Lucihormetica ever glows at all. All the papers announced the existence of bioluminescence in those roaches were based on dead specimens; but that was never observed in any alive wild or captive bred individuals; and they live, feed, and mate readily without any need of bioluminescence.

    It's pretty sure they don't use their glow spots in hunting and mating like fireflies. And if their glow spots are used for defense as most people believe, why those spots only exist on males? We know how "cheap" males are for insects.

  2. I've developed allergic reaction to roaches (I think the main reason is I have to work in a German cockroach rearing lab facility weekly).

    Now I've stopped handling any large sized cockroach like hissers or Blaberus due to the same symptom you've got, otherwise it doesn't affect my hobby.

  3. Just make dry food pellet (dog food for example) and drinking water always available, you don't need to do extra work until the food/water's running out.

    For soil/leaf litter set up mold can be a problem, but hissers can be kept bone dry without substrate. In that case there'll be hardly any mold occur on food.

  4. I suspect that they are wild-harvested, as with many components of traditional Eastern medicine.

    Eupolyphaga sinensis for medical use are mostly captive-bred. Mass breeding of this species is easy and cheap so there's no reason for wild collecting.

    Personally I'm not a follower of traditional Asian med; but just like other markets what they're looking for is profit. If captive breeding makes profits people will do it.

  5. If I remember correctly, these are called Taiwanese flower roach (at least in South Korea).

    So they have a Korean name? Wow that's wonderful, considering 1. they don't distribute in Korea and 2. they are not common in international pet or specimen market. Do you know where their Korean name comes from?

    Isn't the body blue overall?

    Where does that come from, are they called that in Taiwan too? Sounds like a reference to where the adults may be encountered. Nice name.

    well the color varies on different light condition... some times they looks almost black lol but yes they're mostly blue with some green and purple, depends on how you look at it.

    They are not called "Taiwanese flower roach" in Taiwan though, it's always hard when comes to translation but the name's like "banded red&dark blue cockroach".

    This species is also endemic to China along with other Eucorydia, where it is called "bronze true turtle roach"; apparently the bronze here refers to the color of oxidized&aged bronze. "True turtle roach" comes from the genus name Eucorydia, since Polyphagid are usually called "turtle roach" or "ground turtle" in Chinese. Seems they also appears in other SE Asian places but I've got no clue of their local names there -_-

  6. OMG!!! Since when were these in the USA!?!?!?!?! ME WANT!!! :D

    I've been keeping them since last year, those are quite slow growers but hopefully will start producing ooths for me soon

    Any good common name for these? If Kyle gets to it first it will be the little giant metallic blue-green and orange halloween christmas penguin. Just jokin' K.

    How about banded purple roach? Pretty straightforward :D

  7. Eggs and new hatchlings; the newborns are tiny as dirt.

    post-3283-0-64664200-1438652247_thumb.jpg

    Nymphs, resembling to Therea but smaller

    post-3283-0-69020300-1438652511_thumb.jpg

    Adult male

    post-3283-0-55711400-1438652580_thumb.jpg

    Seems there're less females and they don't hang out as much as males. The males are super active, especially during the day since it's a diurnal cockroach species. Despite their small size it took them almost a year to develop to adults; still need to see if they're prolific breeders or not.

  8. Actually I keep them much drier than many people do. Medium moistened substrate+thick layer of leaf litter+minimal ventilation, that's what my set up looks like. Leaf litter is their major diet, and they got all the water they need from substrate. I toss in little amount of dog food occasionally for treat. As a result the whole bin is clean and mold-free, and the colony is growing like weed; I started with 2 dozens and now I even cannot tell how many thousands of roaches in there.

    A lot of dead adults is common for this species if you've got a big colony.

  9. Ok, so mantises didn't actually evolve from cockroaches. Why does that mean there can't be predacious cockroaches?

    I'm not saying "there can't be", just a very small chance there're true predacious roach.

    The whole Blattodea group are scavengers and rely heavily on gut symbionts to break down cellulose, which lead to the evolution of wood-eating and eusocial eventually. If there's a predacious species out there it means that it will have to evolve carnivorous adaptions totally independently; so there's a small chance you'll see true carnivorous roach. But I'll be excited if anyone find one :P

  10. That's quite a generalization. Your'e talking about an entire order of insects here. Sure, they mostly all look the same in body shape, but it's likely that their diets vary quite a bit. Maybe there are obscure cockroaches only known from museum specimens that look like every other roach, but in life they have an almost completely predacious diet? Bear in mind that both termites and mantises, two groups of insects that couldn't possibly be more different in lifestyle and appearance, are both related to cockroaches.

    Yes two of the close relatives of cockroach are mantis and termite; but they're not equally related. Mantodea is a sister group of Blattodea, ie they share the same ancestor. While termites are true Blattodean; they're called termite not eusocial cockroach merely because when people name them they've got no idea that these are the same group of animals.

    That is why you see a lot of subsocial and wood boring cockroach, while there's no true predacious cockroach.

    Cockroaches will intake animal protein source occasionally, as well as termites (for termite, in most cases it's their nestmates). But instead of hunting they take advantage of dead, injured or immobile animals such as pupae. They also chew on other roaches if they're overcrowded or starved, but I've never seen them hunt and kill any preys.

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