Jump to content

JKim

Members
  • Content count

    242
  • Joined

  • Last visited

Everything posted by JKim

  1. Here I'm attaching a female pupa of Lucanus placidus I reared from an egg. I collected an adult female some time ago, and got some eggs from her.
  2. JKim

    Sexing Gymnetis thula (caseyi)

    I don't think your picture is attached properly (check the size of file). Variation, or a phenotype, can be presented all kinds of animals and plants that reproduces by a copulation between a male and a female. Anything that goes through parthenogenesis or cloning won't show a difference from a parent to offsprings. Gymnetis thula has many different variations recorded in scientific publication: black with yellow markings, half and half of black and yellow, mostly yellow, entirely yellow, reddish brown with yellow, etc....
  3. JKim

    Sexing Gymnetis thula (caseyi)

    Look at abdomen and see if there is any vertical groove on the middle of it for adults. If there is one, that is a male, and if not, female. In case of larvae, a small dot on abdomen near anus is present for males, while not for females. This, however, may be tricky (confusing) for small cetoniine species like Gymnetis.
  4. JKim

    Geotrupes sp. in captivity?

    Good info from an expert + experienced person. I used my own for dung beetle trapping an year ago, and I was able to collect roughly over 200 Geotrupes blackburnii excrementi, as well as many different dung beetles and other Geotrupid species. I never tried to breed them though. Maybe I should try this year if I can acquire horse or cow manure. The reason not using human or dog must be the "smell." Since horse or cow only feed on plant materials, makes their feces not too smelly, but humans (or dogs) consume all kinds (meat+veggie), makes the feces smelly... I never really thought of using my own for breeding indoor, maybe in backyard, far from my house (building).. If the project fails to breed, then I was thinking about dumping the entire plastic container away...haha
  5. JKim

    Pelidnota punctata

    An image of L1-L2 larvae of Pelidnota punctata
  6. JKim

    Pelidnota punctata

    the grapevines where I mostly collect these beetles were definitely different species from the harvested on in my backyard long time ago. But that didn't matter. I fed captured adults with the one at my backyard. So, probably, no, it does not matter.
  7. JKim

    Pelidnota punctata

    One tip I can give you is to light up (if you are doing light trapping) at the forest where it actually has grapevines. There is no other reason why they are called as "Grapevine beetles." They love feeding on grapevine.
  8. JKim

    Checking on my stag

    He is upside down to dry a ventral side of abdomen (belly). No worry, as long as he is inside the pupal cell, and not out in plain ground. If he is inside the pupal cell, he will be able to grab a wall and lift himself up. Try not to touch for next couple days. L. elaphus is not known to die out of shock like some exotic species, though it is best to keep it alone for a week or two since they emerged out of pupa.
  9. JKim

    Pelidnota punctata

    Yes, these are F2 larvae. I collected a pair two years ago, and bred some larvae. They became adult beetles, and laid another batch of eggs. AND I actually collected a handful this year, so I added couple alive ones in the same container.. So I'm guessing they are all mixed up. I just looked up on BugGuide, and most recent records indicate P. punctata in New York are mostly active in July to August. In Louisiana, P. punctata are found in May to early July for the most, and still be found couple latter months.
  10. JKim

    Geotrupes sp. in captivity?

    If what you are interested in is breeding (reproduction), then you will need to feed animal feces or your own works fine too. (I'm serious! ). If not, just keep them on substrate, spray water lightly, and nothing much can be done. They feed on animal feces, and I believe they lay eggs under piles of animal feces, as some other dung beetles do. (not a brood ball).
  11. Sharing detailed images of Strategus aloeus male pupa, before preservation. This specimen is collected as L3 larva in Texas on January this year.
  12. Yes, it seems it is far eastern side of Texas(still away from state border). I haven't collected it myself, but I have a colleague who has collected multiple males and females.
  13. what time of the year was it that you found dead males? Try go a month or two ahead of that time. In Texas and Louisiana, they seemed to be already out, and probably past the peak flight season.
  14. JKim

    right place, right time

    Good images! I think I have always seen two rainbows together, and rarely ever seeing a single one.
  15. There is no way to calculate that. Or are you going to ask them? Just set them up. Let's say that female mated. But she doesn't like the set up you made in a tiny container (or even large container), and did not lay a single egg. Then you will probably assume the female DID NOT mated. Right? Since there is no egg found. Even if you saw the female mated with male, if you don't see a single egg from it. You will wonder what happened. You will wonder if the mating did not successfully happened. Or maybe the male is not a male (LOL). There is no such calculation to know whether the wild captured female is mated or not. If you want to rear it, just set them up.
  16. JKim

    Last Night Collections

    I know, right?? This is my first time collecting this many Dynastes tityus in a single night. I've collected 1-3 specimens unto now, but I never collected FOUR in a single night. S. aloeus is pretty common here in a right time. This wasn't new record in quantity-wise for aloeus.
  17. I don't recall which specific research paper it was for the reclassification. Per the morphological difference between Allomyrina pfeifferi with dichotomus spp. group, dichotomus spp. are reclassified to Trypoxylus out of Allomyrina. A lot and many recent researches also (because of that) discusses it as T. dichotomus, instead of A. dichotoma.
  18. JKim

    Attacus atlas

    Is that really Attacus atlas? Seems somewhat small... minor female?
  19. ?? Do you still have question? If you are keeping just an adult male, without breeding, not much things to worry about. Just feed him daily to once in two to three days with fresh beetle jellies or bananas, or any other fruits. After about two weeks you can handle them fine. He won't die out of stress unless you handle them several hours a day for everyday...
  20. If you are referring to dry floral foam that does not absorb water, yes, but you should either keep a cup of water inside the container or wrap the foam with wet paper towel for a good humidity. If you are referring to styro foam, then yes if you can carve it cleanly, and if the pupa can grab onto it to flip himself over. Anything works okay as long as the pupa can grab a sidewall to flip himself over.
  21. Firstly, Allomyrina dichotoma is no longer a valid name. It is now reclassified into Genus Trypoxylus, and the species name is dichtomus as the gender of genus has changed. Trypoxylus dichotomus is the valid name now. There is only one? species now in the Allomyrina, which is Allomyrina pfeifferi. The resting period for Trypoxylus dichotomus is a 4 to 6 weeks. You may have a pair set up together after 4 full weeks. After first picking up of eggs, you may separate male away from female, so female can focus on laying eggs, and not having another, unnecessary mating with male. Place many jellies (4 to 6) in a single time, and don't even attempt to open a container, if you would like to have many and many more eggs.
  22. JKim

    What do you all make of this?

    Nope, it rarely ever comes out when it is alive, or freshly died. It is actually even difficult to cleanly (perfectly) dissect it out, unless you are an expert. Parameres is good key to identification, but endophalus is also a good key used in these days. Many new species description in these days discuss about endophalus as well. Rarely happen in scarabs, but often in Lucanidae.
  23. JKim

    What do you all make of this?

    @ruislerez @aspenentomology @Goliathus It is an endophalus. It is part of genitalia. The actual part you can generally able to see when it is mating is parts called parameres (two hardened parts, left and right). extends to endophalus, usually preserved right behind the parameres, but can also be pulled out in other way for different research purposes. I don't study the morphology of stag beetles at all, but man... I've seen A LOT of those when I was in the lab, back in college. I don't know if anyone here is interested in scarab taxonomy as well, but... I was in University of Nebraska-Lincoln for college, majored in entomology for B.S. degree. This lab is one of the best scarab research institute in the U.S., and in the world. One researcher here is Dr. Brett C. Ratcliffe, who studies nearctic and neotropical scarabs. Other coleopterist here is Dr. M. J. Paulsen, who studies nearctic and neotropical Lucanidae and some other groups in superfamily of scarabaeoidea. As I worked mostly with Dr. Paulsen, He always showed me all bunch different kinds of genitalia and interesting body parts of stag beetles from all over the place. Anyway, it is something usually inside the beetle body, that is VERY unusually coming out of the body. It is actually quite difficult to pull it out intentionally if you are not an expert in dissection of beetles. I have no clue what to do when I see that on alive specimen. It is so soft, and weak to use forceps to just push it in........
  24. JKim

    Stupid Airplane Question

    I'm tagging everyone so all can read it. @Dragozap @ruislerez @Bug boy3092 @Ratmosphere The answer to your question is NO. Even if you can legally own, rear, trade/sell/purchase, and transport between states within the U.S., It is NOT LEGAL to bringing in from oversea (including Canada and Mexico, which is connected by land). The REAL problem of bringing in the organism from outside the country is not actually the organism you are bringing in. The real, and the utmost problem is actually the pest (could be another insect, bacteria, fungus, etc.) which could potentially cause a harm to native plants and animals. This can be a huge problem, if there is any that actually does cause the issues. The next question is the organism you bringing in. That also can cause a potential harm to native plants and animals. It does not matter. Even if you are bringing in Lucanus elaphus, L. capreolus, L. placidus, L. mazama, Dynastes grantii, D. tityus, Megasoma punctulatum, etc., it is illegal, BECAUSE you are bringing them in from outside of the country. @The Mantis Menagerie has pointed out a VERY GOOD thing here: As far as I know, this is half right, and half wrong. Dynastes grantii used to be uncommon, and was designated as protected species once in a while ago, and was unable to legally transport out of the state Arizona. (This is still the case for specimens collected from Utah. D. grantii is still protected in Utah.) The reason of transporting organisms across the states is more likely because U.S. has many different ecosystems from dessert to rain-forest. It would NOT SAFE to bringing in any alien (outsider) to a new habitat. The state California can freely import dynastine scarab beetles and lucanid beetles from other U.S. states as long as it is not legally protected by law. There are some other U.S. states like that, and it all depends on state and status of species itself. Back to the original discussion: You all may wonder what the fxxk does USDA and FWS has anything to do with bringing in organisms from outside the country. They handle this matter because they are the ones taking good care of natural fauna of the US, and especially "the plants." Do not ever try to smuggle. The U.S. Customs and the FWS agents in the US airports are fucked up. They are retarded assholes who has no knowledge of insects, willing to confiscate whatever they like even if you legally transporting loaned museum collections. Here is what happened to me the other day. I brought 14 dead, dried, some packaged and some pinned specimens from a short trip to South Korea in March 2017. They were all legally collected, not protected, very common, and their status were all NE for Not Evaluated per IUCN (NE is there for those so common, that you don't even have to research whether they are decreasing or whatever). As soon as USFWS agent looked at a male, Trypoxylus dichotomus, they confiscated, and told me this is one of those CITES. I immediately responded to them that this is not CITES, and is not protected, and also I told them I received it from national museum for a research (Yes, they really were from many different research institutes in Korea.) Guess what? They are NOT willing to hear me out, and just took it away. Oh well, It's not like T. dichotomus is something that I need to risk my life. So whatever, I just gave it away, and received a package of pinned and papered collections from a colleague in South Korea. Ever since, I never personally carried anything with me. Because, I'm dead tired talking to idiots. Try not to risk your rest of life. If you really want to rear something illegal, try get them within the U.S., to avoid stupid troubles, although I would not recommend anyone to do anything illegal. It is just NOT WORTH IT for your hobby life. Hobby is for fun, guys... Have fun!
×