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Calosoma scrutator colony

Discussion in 'Insects, Other Invertebrates & Arthropods' started by Nathan Zhang, Mar 12, 2018.

  1. Advertisement
    thinking about a self sustaining colony of calosoma scrutator
    Anyone bred them before?
    How to care for them?
  2. The wolf

    The wolf Arachnobaron Active Member

    I don't know anything about this species but they look really cool from what I know from keeping ground beetles you need to separate the larvea to prevent cannibalism I have also found that the larvea of carabids are extremely delicate at their early stages
    Good luck
  3. I've read that you can get the adults to lay by putting caterpillar frass in their enclosure.

    Normally these are hard to find, but in areas experiencing large gypsy moth/tent caterpiilar outbreaks they suddenly become extremely abundant and you can find many larvae crawling up tree trunks in a matter of minutes. They grow extremely fast. Unfortunately when I tried to raise them most died in the pupal stage.
  4. ahh, there is an outburst of calosomas every year near where I live in the summer, already starting to get some, I was wondering if I could keep a colony of them.
    keep our natives!
  5. coniontises

    coniontises Arachnosquire

  6. ohh, i see thank you. Has nobody bred Calosoma before because on myPetPlace it is said breeding is easy
  7. Liquifin

    Liquifin Arachnoknight Active Member

    Believe it or not, these species live around my area. I have only seen one of them in my house before. But it was killed accidentally by my brothers things. As it collapsed and fell on it as we were trying to catch it and take it outside. :(
    Last edited: Mar 14, 2018
    • Sad Sad x 1
  8. Two survived the pupal stage. There were actually two species, C. scrutator and C. sycophanta. I couldn't tell the larvae apart and one of each survived.
  9. ahh, thats good, do you know what made them survive?
    maybe you can check the link I posted earlier and we can get these more readily in the hobby because apparently they breed easily if you do everything write
  10. coniontises

    coniontises Arachnosquire

    Skeptical. Sometimes captive carabs will produce larvae, but these often die. I think that the guy probably got a few new adults from captive-produced larvae, but many larvae died.

    I have the Ultimate Guide to Breeding Beetles, and although the book is a bit dated that report of breeding Calosoma is useful.

    Basically, the author had some orange isopods in a big tank, got his adults to make larvae, and pupated a few successfully. But he produced less adults than he started with.
  11. Check the comments some guy bred many new adults but still less than he started with
  12. Smokehound714

    Smokehound714 Arachnoking Active Member

    carabids sometimes have crazy courtship and oviposition behaviors that simply cannot be replicated even in lab conditions. I know for a fact that a few will climb trees and carefully wedge their eggs in crevices on tree bark with their mandibles.
  13. Why are you skeptical that someone could have success? If breeding and rearing to adulthood is possible why is it so unlikely that a higher survival rate could be achieved?
  14. coniontises

    coniontises Arachnosquire

    He only got four captive-bred new adults.

    Well, the Ult. Guideā€™s author (Elytra & Antenna on the forums) is a respected expert, and many failed or semi-failed carabid attempts apparently exist in technical research papers. Even if a good survival rate was achieved by the Pet Place blogger and his commenter, the probabilities are higher that they produced one or maybe two consecutive generations than a perpetual colony. Calosoma adults are very long-lived anyways, though.

  15. Hisserdude

    Hisserdude Arachnoprince

    It seems like if you really want to be successful in breeding Calosoma LONG TERM, over several generations, you are going to need access to lots and lots of caterpillars. Access to caterpillars and their frass seem to be essential to inducing adults to oviposit, and larvae feed poorly, if at all on other captive prey items in comparison to the vigor they show for caterpillars.