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About Goliathus

  • Birthday February 27

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    The Living Planet
  • Interests
    Insects (esp. Coleoptera and Lepidoptera)

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  1. In isopods and reptiles they are called morphs. so forms are just variations? Morph, form, and variation are all essentially interchangeable terms. Also the Regius goliathus hybrid Bred by insect brothers would in theory create a new species? No - it's a hybrid, in the same way that a cross between a lion and tiger, or a horse and donkey, are also hybrids. Hybrids can be fertile or infertile, depending on genetics. Incidentally, it's still not yet been truly established whether Goliathus "atlas" is indeed a hybrid between regius and cacicus, or simply a rare form that occasionally turns up within the regius gene pool. There are at least two (or more) rare forms of regius that look quite similar to atlas, but are not the true atlas, which is distinguishable from the others by a particular detail of the dark band that runs along the inner elytral margins (elytral suture).
  2. Might be a typo? Could it mean Brac? - https://www.google.com/maps/place/Brač/@43.3239049,16.373684,10z/data=!4m5!3m4!1s0x134a9b3548954eaf:0x927404eda9b10653!8m2!3d43.3048913!4d16.6527099?hl=en
  3. Most of these are forms, rather than species. By the way, G. albosignatus albosignatus and G. orientalis undulatus have been left out. As for G. goliatus - in the words of entomologist Gilbert Lachaume (1983), some coleopterists have "amused themselves by naming a large number of varieties". I can't even recall all of the G. goliatus forms that I've seen listed on sites such as eBay over the years, many of which are not actually "officially recognized", and seem to have been coined by sellers. I believe that one such example, is hieroglyphicus -
  4. Moisture absorption. See coloration section of the following page - https://www.aquarimax.com/how-to-keep-blue-death-feigning-beetles-asbolus-verrucosus/
  5. Yes - flake soil is fine for rearing Cotinis, but when they're ready to build pupal cells, you'll need to make the substrate at least 50% fine sand. At least, that's been my experience. Unlike species such as Gymnetis, Cotinis seems unable to build proper cells from purely organic substrate.
  6. Why not just keep them in groups in a larger container? I used to keep them separately, but haven't done that in many years. I even found that I got much better growth when they're kept together. It might have something to do with a group being able to more effectively augment the substrate with their symbiotic bacteria, than a single larva can alone. Probably best not to keep any more than 12 larvae in something the size of a (50%) filled 10 gallon tank, though.
  7. Such as 64 oz? - https://m.media-amazon.com/images/I/81XOxr82ghL._AC_SL1500_.jpg
  8. The thing about grill pellets is that they're "food grade" - since they're intended for cooking rather than heating, they don't have the potential for any harmful impurities. Some varieties of fuel pellets might possibly be free of contaminants, but it's almost impossible to know. In any case, fuel pellets might also contain some percentage of coniferous wood such as pine.
  9. That's it? Just a tiny structural difference in one of the tarsal segments? By that logic, people with different hair and eye colors could be classified as different species!
  10. Those are fuel pellets, not grill pellets - that's why the price is so low. I wouldn't risk using them for making substrate.
  11. What was the reasoning behind giving Megasoma actaeon johannae (M. rex) species status? It seems to me, that rex is indeed a ssp. (or just a morphological variant) of actaeon.
  12. Arguably the "rarest" Megasoma, in respect to its rather limited distribution.
  13. The map I posted indicates areas of habitat suitability ranging from high to low, but not necessarily places where elaphus has been recorded. The dots however, indicate the locations of known population clusters.
  14. Surely, any records of M. vogti in the Davis Mountains are in error, as that area is much too far west for this species? I've not heard of vogti being found any further west than the area around Brackettville.
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