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Goliathus

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About Goliathus

  • Rank
    Beetle
  • Birthday 02/27/1973

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  • Gender
    Male
  • Location
    The Living Planet
  • Interests
    Coleoptera (esp. Scarabaeidae, Lucanidae, Cerambycidae, Buprestidae & Curculionidae)

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  1. Goliathus

    Sales of A.dichotoma in the US?

    Beetle-Experience wrote: Some of the exotic coleopteral exceptions include: Scarabaeinae (Dung Beetles, as long as they are not from a country with a history of "Hand, foot, and mouth disease") And this exception would presumably include the giant metallic South American species such as the blue Phanaeus lancifer and green P. ensifer (which, although they are true dung beetles of the tribe Phanaeini, are actually carrion scavengers)? insectivorous beetles like Carabidae (Ground Beetles, Tiger Beetles) Including large African genera such as Mantichora and Anthia? I've seen both of these in zoos and museums a couple of times (many years ago), though I've not heard of any successful captive breeding of either of them. and the three aforementioned species of Goliathus. I assume that at least part of the reason why Goliathus was de-regulated in the US is because, almost uniquely among cetoniine scarabs, the larvae of this genus are carnivorous rather than herbivorous? Certainly, all that I have ever read about captive breeding efforts with these beetles clearly indicates that they simply cannot survive without a specialized, very high protein diet. Without this, the larvae fail to develop. While they will readily accept protein-rich food pellets in captivity, it is strongly suspected (because of dietary requirements, behavior, and certain morphological characteristics) that in nature, the larvae of Goliathus feed primarily on the larvae of other beetles - quite possibly those of Melolonthinae ("June" beetles), or of smaller Cetoniinae (e.g. - Eudicella, Stephanorrhina, Pachnoda). Incidentally, Goliathus is not completely unique in being a predatory cetoniine - captive breeding has shown that the larvae of its closest relatives, Argyrophegges, Fornasinius and Hegemus (all of which are also Afrotropical) also have such dietary requirements (although, as is the case with Goliathus, exactly what they prey on in the wild is not currently known). An interesting taxonomic paper on Fornasinius was recently published - LINK. I note that many European coleopterists commonly refer to Fornasinius (and related genera within the subtribe Goliathina) as "Goliath beetles"; I myself consider only the genus Goliathus to be true Goliath beetles, but that's just my preference. I've also sometimes heard Strategus, Dynastes, and various other Dynastinae (Rhino beetles) referred to as "Elephant beetles", but I only call Rhino beetles Elephant beetles if they're actually in the genus Megasoma. In the US, there is at least one genus of cetoniine scarabs that are known to be carnivorous rather than herbivorous - Cremastocheilus. They are associated with ant nests, and adults are known to feed on ant larvae. It seems that the larvae of Cremastocheilus may also feed on ant larvae / pupae. Possibly, these beetles produce an odor that causes the ants to not recognize them as strangers within their colonies. I've only ever encountered one specimen of this unusual genus (in Arizona), but they are many species found across the US, and they are not uncommon. Each Cremastocheilus species is specialized to a particular host species of ant. Actually JKim, one Scarabaeidae that much of the U.S. is having trouble with is Popillia japonica - "Japanese Beetles", they have not made it to Louisiana yet. P. japonica has been in the US for over 100 years now. Clearly, there is some environmental factor that prevents it from extending its range beyond the eastern third of the country. It seems that this species has never been able to spread very far west of the Mississippi River. It may be that as you go toward the Great Plains, the decreased amount of rainfall simply isn't adequate for them, or the summers are too hot and dry.
  2. Goliathus

    What Beetle is this?

    It's in the family Chrysomelidae, but I'm not familiar with what species this is.
  3. Goliathus

    Rosenbergia xenium

    I'm a bit too far east for Trachyderes (=Dendrobius) mandibularis, though I saw a couple of them in AZ years ago. Yes, it's a very unusual looking longhorn; very glossy - they look like they're made of colored glass! Another great longhorn is Sphingnotus mirabilis, from New Guinea - When a species has the name "mirabilis" (amazing, wondrous, remarkable), you know it must be something special!
  4. It's the American Burying Beetle (Nicrophorus americanus) that's endangered, not the American Carrion Beetle (Necrophila americana).
  5. Goliathus

    Collecting trip tips

    If you happen to end up in far West Texas, you could visit the Davis Mountains, the habitat of Chrysina woodi. Chrysina gloriosa lives there also. It's a quite "off the beaten track" place, but the landscape out there is amazing -
  6. Goliathus

    Packaging Beetles For Shipment..

    Have been using these for years without any issues; available at most dollar stores, in various sizes -
  7. Goliathus

    Rosenbergia xenium

    Though they're not nearly as large as their relatives in the tropics, we do have some very beautiful longhorn beetles in the US, including - Plectrodera scalator Plinthocoelium suaveolens Crioprosopus rimosus Megapurpuricenus magnificus Desmocerus palliatus Rosalia funebris Trachyderes mandibularis - to name a few.
  8. Goliathus

    Tips and care for Lucanus elaphus!

    This main focus of this book is L. elaphus care - https://shop.bugsincyberspace.com/Stag-Beetle-Care-Guide-book-bic5.htm
  9. Goliathus

    Rosenbergia xenium

    Probably the rarest species in my collection of beetle specimens - Rosenbergia xenium, a large and impressive Longhorn (cerambycid) from Papua New Guinea - Would like to have a specimen of Rosenbergia gilmouri as well, but there's probably little chance of that, considering the rarity (and price) -
  10. The light given off by true UV tubes, like those described in my post, isn't especially bright. It's far more visible to insects, than to people.
  11. Goliathus

    Granti Photoshoot!

    Thanks for the photos! I definitely need to work with granti again someday (when I'm not so busy with continuing to refine my rearing process for Chrysina spp.). I'm currently working with three of the four US Chrysina. The only one I haven't reared yet is lecontei. At one time, I thought that Chrysina was kind of problematic to rear in captivity, but now, I'm finding that they're actually not difficult at all once you understand their particular requirements.
  12. Please see the following post - http://beetleforum.net/topic/3712-uv-led-flashlights/?tab=comments#comment-24634
  13. The best thing for bringing in those two species is a UV light set-up. Lucanus elaphus and L. capreolus will also come to UV. Strategus spp. too, along with countless other beetle genera.
  14. Goliathus

    Beetle ID

    Grapevine Beetle (Pelidnota punctata) of the scarab subfamily Rutelinae - https://bugguide.net/node/view/3139
  15. Goliathus

    Light Traps...? Help...

    Here's a relatively inexpensive, very basic UV set-up that I've used for years with great results, though I'm not sure if it's what you're looking for - http://beetleforum.net/topic/3712-uv-led-flashlights/?tab=comments#comment-24634 Apart from that, the only other things you'll need are a white sheet to suspend right behind the fixture, something to securely hang the fixture from in a vertical position, and a medium-duty extension cord, the length of which will of course depend on how far away you want to set up the light from your nearest power outlet.
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