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wizentrop

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Everything posted by wizentrop

  1. @Hisserdude pretty much covered some of the main methods for collection. I hate to disappoint here, but even though in recent years I became interested in cockroaches diversity, I never go on trips expecting to collect them. In other words, I do not set traps specifically for them. The idea is more to look at the big picture and examine the entire arthropod diversity in a certain location. Yeah, I do see some interesting roaches while doing so, some of them come to light trap (not only males, @Hisserdude) others hidden under bark/stones, and some just roaming about on the vegetation. Unless you are looking for a certain species only, there is no reason to limit the search to one type of habitat. But let's go back to the topic of bait traps. I'll tell you a nice story about a friend of mine from university. He needed to collect some blattids for a behavioral research project, so he built a trap from a plastic bottle by inverting the top part inwards. He used biscuits with some peanut butter as bait (PB is known to be very attractive for roaches) and waited. He waited 3 nights and nothing happened. No one came. Then he realized a key component was missing from his trap. A roach. He looked hard and managed to collect a single cockroach, then he put it inside the trap. The following morning the trap was swarming with cockroaches. The aggregation pheromone did its job here. The roaches sensed the presence of a conspecific + food, and responded by flooding the trap with members.
  2. A lot of people have been asking me about the species of Panchlora in culture, and why I price the white roaches differently than the others. More specifically, people wanted to know about their size difference. I took a photo to show you the sizes of Panchlora "white" and P. "speckled", compared to P. nivea. Please note that my P. nivea come from a wild population, so they might not be P. nivea at all, but their size is identical to P. nivea that is in culture. These are all unmated females. P. "speckled" is slightly bigger than P. nivea, and Panchlora "white" is even bigger. You can also see the color difference between the species, but I'll note that the light conditions for photographing them were not ideal. Panchlora are known to be very reflective. Besides the body color, you can also see differences in the color of their antennae.
  3. I have to say that figuring out the females' color is a little tricky with this species. The left female in Hisserdude's last photo represents the color faithfully. However, there is a bit of an optical illusion here because of the light in the photo, and the female looks too pale. To see what I mean, tilt your head to the right (like you would do when reading the title of book sitting on your shelf). The female will look slightly more metallic green. That's the right color.
  4. Hisserdude, your females should have given birth by now. By the way, I do not keep this species with any other arthropods, but I do have predatory mites in their enclosure (they come and go). That being said, they should be perfectly fine with springtails/isopods.
  5. The white color is cleaner on the upper side, and the underside is more ivory-yellowish. It is difficult to get their true color to come out nicely in the photo as in real life. I did not want to use a flash because then the pale color would be blown out by the flash (not to mention these roaches are glossy). They are white in real life, but as they age the white turns into ivory-yellowish, especially at the base of the wings.
  6. They are slightly bigger than P. nivea. Females are 2.5cm long, 3cm with the wings. Hisserdude - it is illegal. Luckily, they are in a facility that meets the quarantine requirements. There is a slight advantage with these being a potential new species - they are not listed as pests (or anything else, for that matter) in any risk assessment... While I do not wish to turn this thread into a discussion about control of exotic species, some regulations are justified. It is true that Canada is severly cold in the winter, but for this reason potential pests will tend to stick around inhabited areas where there is heating and food. That said, I do agree that some species have absolutely no way to establish in Canada. I never understood why some tropical insects are forbidden, especially stick insects.
  7. I am really enjoying this "ghost" species. Very elegant roach. A small group: And I believe someone requested a photo of their underside, so here goes - Male: Female: I didn't really put a lot of effort in these photos, but you can get an idea how they look like.
  8. Hisserdude - yes, pretty similar, on the humid side. Salmonsaladsandwich - I will, but it will take some time becuase I have another trip overseas for fieldwork coming up.
  9. These adults are the first generation (birthed last year), so yes they are already in breeding. It is a small colony of 30 individuals, started with two mated females.
  10. After a long wait, I can finally say I have a few adults of this adorable species in my colony. They look even better in real life. Still researching their exact ID.
  11. This species actually tend to burrow a lot as nymphs. But then again I only kept them on fine sand (from dunes and caves). In the wild, this is the type of substrate where you find them.
  12. I second what Roman Buck said - at least for P. aegyptiaca - use fine sand, and keep it dry. They will get all the water they need from food (fruit and veggies). As for the oothecae - they take very long to hatch, I had mine hatching after 10 months-1year. I separeted them from the roaches and kept them in a box containing woodshavings. I added just the tiniest bit of water for humidity, about 10%, kept it constant and waited. After they hatched, I transferred them with the adults as they tend to grow better with bigger specimens munching on the food first.
  13. Good suggestion Thomas, I thought about it too - but when I looked closely at the famous Xestoblatta sp. photo I found some differences. In Panchlora nivea and this unnamed white species, the wings and the pronotum have a wide transparent margin. In addition, the pronotum is oval. In Xestoblatta sp. it looks like the wing margins are yellow (probably with a very thin transparent part) and the pronotum too has a very thin transparent margin. And the pronotum shape is completely different, it looks almost triangular. The pronotum shape itself might be enough to determine that the white roach does not belong to genus Xestoblatta. Here are some photos for comparison (not mine): Panchlora nivea - http://www.flickr.com/photos/invertsfromhell/5561140543/ White "Panchlora", by the same source in Belize - http://www.flickr.com/photos/hickatee/9271669259/ http://www.flickr.com/photos/hickatee/7143814065/ Xestoblatta sp. - http://farm6.staticflickr.com/5086/5286735400_3ae8bc2827_z.jpg
  14. I am new here in this forum (haven't even introduced myself), but I can confirm this species is entirely white - Last september I visted in Belize for a workshop and found a female of these white Panchlora sp. (although it is possible this is a different genus). I will see if I have a decent photo of it - and will post later. I intend to return to Belize for scientific work (on a different group of invertebrates) this time with collecting permits in hand. I cannot wait to collect this beautiful roach and verify which species it is.
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