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JKim

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Everything posted by JKim

  1. I collected a 30mm male of Lucanus placidus Say, 1825 couple days ago. I found couple females in the past, but this is my first male. It seems they can be found in more areas than any other Lucanus spp in the US, but rarely collected in southern states. I haven't seen much images of captive bred specimens.. Could it be because it is rarely encountered? They are not a difficult species to rear at all. I currently have 10 larvae doing very well, and likely to emerge this summer.
  2. JKim

    Lucanus placidus Say, 1825 - Male

    @davehuth Yes, the female I collected last year was already gravid. Of course, there is no way telling whether it is mated female or not, but I just dump her into a setup and found couple eggs / larvae afterward. The reason I set her up was that (1) I collected a specimen in late May (2018) and since this species seems to be out in late April to early May, I assumed it has already mated by the time and (2) the specimen was not in a good condition (some scuffs/scratches entirely), meaning it has been some time since it has emerged. But... this is just "a guess," and proven to be correct that is has mated previously.
  3. JKim

    yellowstone national park

    I do not aware of any large-sized scarabs in Wyoming... You should keep an eye out for park rangers, if you are collecting inside the boundary of Yellowstone National Park It is ILLEGAL to collect organisms in national parks without a proper permit. Right outside the boundary should be OKAY without a permit. Different parks and forests have different regulations and restrictions. You would not want park rangers to point a gun at you, right?
  4. JKim

    Polyphemus moths

    @Bugboy3092 Antheraea polyphemus is known to feed on variety plants including American elm, beech, birch, grape, hickory, honey locust, lemon, maple, oak, pear, plum, walnut, etc. Different reference always tell you different things. However, that does not mean they are all fully compatible with your caterpillars. Some of these can be primary preference, while others are secondary preferences (because primary preference is just not available). If you personally collected the female, and if you know what plants were nearby, try feed THAT plant instead of trying a random one of so many known host plants. I attempted rearing Actias luna, Dryocampa rubicunda, Eacles imperialis, Automeris io, etc. which are known to feed on red oaks, did not actually fed on oak at all and just died in hunger. So what I think is that there are some different host preference over where the original specimen (or parent specimens) are collected. Say... If you collected a mated female in a maple forest, then the caterpillar's primary preference would potentially be maple and similar species, not pine or oak. Just my thoughts over my experience... I tried feeding different plants (red oak, sweetgum, pines) for Actias luna (caterpillars from a mated female I collected), but caterpillars only fed on sweetgum, which was interesting. The mated female is collected in a pine forest with some sweetgums and oaks were available here and there. The exact location where I found the mated female had sweetgums all over the place. SO... I think that's why the caterpillars only fed on sweetgums, instead of pines (or oak).
  5. JKim

    Catching tigers

    @The Mantis Menagerie In that case, you should pour only a tiny bit of wine into the trap, and you have to pick up collections daily before the noon (to avoid heat) to keep them all alive. All my collections were alive when I picked them up. I don't recall collecting any of them in May, but started to be collected in June in Louisiana.
  6. JKim

    UV LED flashlights

    I just happened to read this post while searching other stuffs, and decided to participate in this old post. Any light can attract insects. Smartphone LED Flash can attract insects, just the brightness of the phone screen can attract some insects. However, that's just couple specimens right next to you. You won't be able to ACTUALLY attract anything far from your location. LEDs that states it is a blacklight is usually a fake, especially in forms of flashlight. They are just blue-purple colored LED bulbs, imitating the blacklight. The BLACKLIGHT is not about color of light. It is about the wavelength it emits. If I remember correctly, anything that emits wavelength between 200 nm to 400 nm are considered UV, and the wavelength that attracts most insects is somewhere 360 nm (can't remember the exact number). LEDs generally do not emits any UV at all, so using an LED light to collect insects is simply a waste of money. Now days, there are some insect attracting LEDs available in the market, but according to what I read, it is so terrible compared to light traps used with HID lamps. SO I think an insect happened to fly around that exact spot sat on the light and sheet, instead of actually attracting insects far from the trap. If you cannot afford HID lamps, portable generator, and all other necessary setup, just try using battery-powered fluorescent lamps with blacklight tubes replaced. Use that in heavily forested land where no lights are within the radius of a mile. That should do so much better than that 100-leds flashlight you have. https://ebay.com/itm/270415596824 This is not a bad choice of selection. I used two of this with one replacing the tube with blacklight tube. This is battery operated, and very light that you can carry in a hand or in a backpack.
  7. JKim

    Catching tigers

    @Dak.the.bug I'm sorry for the delays. I don't know if iNaturalist is a reliable source to see how many species occurs there, especially for Cicindelinae, or many potentially confusing groups. There are many professionals, but there are many crappy amateurs too, such as ones stating "I'm the first one to publish this record at here!" In case Cicindela spp. you can hardly ever collect ANY with pitfall trap. Try get a butterfly net and go for it! Go search the sand marshals, bayou, or any water during the day. The most active time of the day is probably when it is hot hot HOT!! They love to run and fly near there nest. Probably sometime between 11AM to 3PM. Attached is an image of Cicindela chiloleuca Fisher, I collected near an old salt field in South Korea. Many species in Cicindela, including C. scutellatis seems to love the salt marshes. @The Mantis Menagerie I haven't collected Tetracha for years now. Probably a decade? They were never my favorite group, so I only collected couple times, and gave it all away to a colleague. The habitats I placed traps were near water or forest with river next to it. I don't know the details of Cicindelinae, but it seems there are different group for habitat. There are some species that can be found near water, while some species can be found without water present nearby. I happened to have some experience in collecting four or five species of Cicindela spp. in South Korea, and one found in heavily forested mountain (without any water nearby), while all others were found in salt marsh. The image attached above is one of it, collected at an old salt field. They never overlapped in habitat wise. (this is what I experienced from only couple collection trips, not multi-year researches). Unfortunately, I have no pictures of pitfall traps still alive in my computer. All I use is a small cup (but in depth of over 2 inches) with little bitty of cheap red wine ($7-10). Don't have to pour in a lot of wine. Just a sip of it. like quarter inch depth of wine in a cup. If you are setting and picking them up daily, then yea. If you are picking them up every once in a while, then you probably need little more than a quarter inch of wine, but would not recommend it. Set them up where sunlight is fully or at least partially available.
  8. JKim

    ID this please woah

    To identify any insects, no matter in what order they are in (Lepidoptera, Orthoptera, Coleoptera, etc.) dorsal plate is definitely the least one shot needed. Any image like this, there is no way to identify it to species level, but Cetoniinae.
  9. Season is about to start down here in southern states, and I went out to see what's out right now. This picture illustrates the light trap set up I have done with a colleague couple nights ago. These are actually a combination of two set ups: 1. one 1000 watts metal halide with ballast and one 250 watts metal halide with ballast and one 15 watts blacklight operated by 2000 watts generator 2. one 400 watts metal halide with ballast and one 15 watts blacklight operated by 1000 watts generator There was three sided standing sheets inside a triangle of three lights with blacklights here and there. Many different species of Scarabaeidae (Melolonthinae + Dynastinae), Saturniidae, Erebidae, Diptera, Hymenoptera, Orthorptera, Hemiptera, Megaloptera, Neuroptera, etc. etc... are observed. No larger sized scarabs yet, but found couple of interesting, rather uncommonly seen species of Melolonthines. I'm excited for this season!! Any heavy (actual) collectors in this forum? (not collectors as "buyers")
  10. JKim

    Light trapping

    Thanks! Since your location in member information section does not show where you are from, hard to guess where exactly you lighted up. One of the important factors to consider are: preemptive and bright and long lasting lights, especially if you are doing it near many other light sources. Insects tend to fly to the very first lights they see, and then they just won't fly to the other lights. So lighting up starting early evening is highly necessary. I light up an hour or even two hours ahead of sun goes down completely. Also, if you are light up near the gas station, you just have to have something so much brighter than gas station lights. That's kind of obvious, right? Long lasting is important because each species are time-specific. I'm sure you are aware of it, if you have been light trapping all night long. Insects collected near city are completely different from insects collected in woods because people these days plant non-native plants here and there, you can actually (and potentially) find many different kinds of species compares to deep forested area where there is primary species of wood (like pine) occupies majorly. (may vary per location, of course) Thanks! Haha I've been collecting since I was in elementary. It has just gotten more hard-cored, especially when I started light trapping. I don't do any live insect donations to insect zoos, because it seems they can only "buy" from a person with tax ID number as a business owner here in Louisiana, which is weird... There is no "professional seller" of live insects anyway in the United States other than maybe someone like Peter Clausen who regularly carries insects and beetles as items. Yes, this set up is not very affordable kinds. But if you are highly interested in collecting, this thing can pay you off with experience, knowledge, and research materials, and maybe some extra stuffs you can sell to others who are interested. Anything that I'm not interested, I donate them to my colleagues over the world. I donate some to institutions as well. And only portion are being sold over eBay, InsectNet, and some others. Thanks! As long as the battery capacity is large enough to run for more than four to five hours, sure yea! It is good. I heard many stories from researchers and colleagues who went oversea to unoccupied location where you just can't buy or take generators with used car batteries to light trapping. It works, except high wattage like 1000 watts may not work because of the battery power, I'm guessing. It should work okay for anything not too high like 1000.
  11. Rocky mountain has great numbers of Lucanid beetles, but... nothing large if I remember correctly. I don't recall Lucanus spp. occurs in California, does it? Or anything large like Dynastes, Megasoma, or Strategus?
  12. JKim

    Catching tigers

    What tiger beetles are you collecting? Different species, different methods available. if you are collecting any Megacephalini, then pitfall trapping works great. They are flightless. I once collected over 40 specimens of Tetracha carolina in a single day with two small pitfall traps. Anything Cicindelini, you will have to run around with butterfly net, at least 3 ft long or longer. Anything too short, they will quickly fly away when you make an approach, especially when you are not very experienced in collecting tigers. I'm not a serious tiger beetle collector at all, but up until now, I've collected: Tetracha carolina, Tetracha virginica, Cicindela repanda, Cicindelidia trifasciata, Cicindela sexguttata, Ellipsoptera lepida, ... It looks like there was some revisions in genus Cicindela as Bugguide has changed whole lot of things there. Both T. carolina and T. virginica can be collected with pitfall and light traps. All others, I collected with light traps and butterfly nets.
  13. JKim

    Wild collecting Dung Beetles?

    Yes, those attached images, as [Goliathus] stated, are beetles in family Troxidae. They are also one of the carrion/feces attracted beetles. There are so many different beetle species attracted to feces and dead animal / plants. Different species attracted to feces of many different animals. Can be quite confusing when their sizes are small.
  14. JKim

    Wild collecting Dung Beetles?

    Ataenius is not a genus associating with dung beetles, like Phanaeus. Genus Ataenius is under Subfamily Aphodiinae. Dung beetles that Goliathus (person above) talks about is the Subfamily Scarabaeinae. They are two very different groups. If you ever found species in Ataenius, I highly doubt that you identified it to the species level properly enough, because they are very small sized beetles that no non-specialist cannot possibly identify to the species level, or even to the genus level. It is that difficult, and that small to just look into it with naked eyes. If your collections were very small sized (less than 1/2 inch), and you are positive they are dung beetles, then they are probably Onthophagus species. Try take pictures and share with us to see if they are Ataenius. I'm not trying to offend you in any ways, but I'm just explaining you the two different beetle groups. If you are interested in Phanaeus vindex, I can send you some later in May. I have couple friends asked me to collect some for them, so I'm planning to collect some, and I can collect an extra for you. In the meanwhile, image attached is Ataenius platensis (Blanchard) I collected years ago. This is the general look of Ataenius and many other subfamily Aphodiinae. This pictured specimen is probably somewhere 3 to 4 mm.
  15. JKim

    Questions

    Each individual D. tityus will take different amount of time (couple months to half an year) to be matured enough to breed. D. tityus tends to take a longer period of time than any other Dynastine scarab beetles. My beetles usually take about 4 to 7 months. My current beetles took six and a half months to start actively feed on food. Male and female size difference is not a problem, unless the female is a lot larger than a male, and when male cannot grab a female to make her stays still. I can't answer your last question based on your description. It could be deformed claw or blister-like thing, which cannot be good. Try attach some images for better feedback.
  16. JKim

    Extended Pupal Stage

    Differs per species, differs per temperature, yes. They may take extra weeks when it's cold (not ready, thinking it's not spring yet). Also, if you keep them very warm, they can emerge out earlier than average time the species would take. Nothing too bad or good about it. No changes really. I used to rear Dorcus titanus castanicolor (very long time ago, in Korea) female spent about 4 months as larva, and spent 2-3 weeks for pupal stage. That isn't normal, but still emerged very large size (42mm) for the species, and lived long enough.
  17. JKim

    Hibernation questions for D. Tityus

    Unless the female emerged in a late summer to early spring, hibernation is not required. Also, if you keep it indoor, such thing is not even necessary as indoor temperature is high enough to avoid hibernation. Egg laying does not require hibernation whatsoever.
  18. JKim

    How to hibernate

    Keep the beetles in between 40 - 60˚F. If the temperature goes up and low, and not stabilize, the beetles won't go hibernate. Don't go any lower than 40. It may freeze to death. You must keep them in a container about 32 oz or larger with full substrate in the container.
  19. JKim

    Importation Question

    Nope. The problem of importation of live organisms not only lies with whether that species can adapt to new environment, and also causes a harm to native species, but also other parasitic organisms (including insects, ticks, plant parts, pathogens, etc.) that is attached to THAT organism(s). So even if D. tityus is already occur in the U.S., does not mean you can import it from Japan, China, Taiwan, or elsewhere.
  20. Females are tend to be smaller, but not sure if that actually is a female from the picture provided. D. tityus can take an year plus to three years to actually emerge to adult beetles. Each specimen, disregarding whether it is male or female, can take an year plus to three years or more to become adults. If there is any local garden and hardware stores available as well as Walmart, Lowe's, or Home Depot, then try find an organic potting mix. It is good alternative for a fermented oak substrate. Make sure your potting mix does not have any small centipedes earthworms, as it sometimes have in winter and colder seasons. I reared more than just couple D. tityus for several years now okay even with the organic potting mix (soil) commercially available from stores. There were three particular brands I used in past, but I can't remember any but one, which was Miracle-Gro. Its design has changed a lot, but try look for ones with vegetable images and orange colored bag. If not available in such look, just buy something that says "organic potting mix."
  21. JKim

    Carnivorous Plants

    Just in case, if you are getting carnivorous plants to remove any small flies including fruit flies and mushroom flies around your beetle containers, that is NOT a great idea. Carnivorous plants are commonly known to feed on insects and small animals for nutrition, however, that is so wrong... Their regular diet is nutrition from soil and photosynthesis from sunlight. As the name says, they can digest insects or small animals (rat sometimes do fall into the nepenthese), however, they actually use up similar amount of energy to digest to consume. Therefore, if the plant is fed up with too many insects daily basis, they can die off from it (which is kind of funny for the name). I used to harvest some venus fly trap variations, but lost my interest after an year as I couldn't find the good forum to discuss or buy more things... It was way before the Facebook gotten popular to people. I'm pretty sure there is a group in Facebook as well.
  22. JKim

    Bug collecting.

    Dynastine scarabs are basically everywhere in the United States depending on the species. Dynastes grantii occur in Arizona abundantly, and rarely found in adjacent states. They fly around starting May-June to September to October, however the peak flight season is late August to early September. Its sister species, the D. tityus can be found from eastern Texas west to Georgia north to somewhere near New York. I know there are records in lots of counties in Philadelphia. Try go to Philadelphia in sometime June to July as it is closer than southern states from your location, Maine. Strategus are here and there. Strategus aloeus is considered very common species in Louisiana, and its peak season for adults is from late June to early July in Louisiana. Its sister species, S. antaeus, that is less common can be found from last week of May to first week of June in Louisiana. Somewhere in North or South Carolina has records of Dorcus parallelus as well. It is very small Lucanid beetle, however, is one of the Dorcus species. Lucanus elaphus should be available in Virginia and around. Refer to Bugguide and/or iNaturalist records to see when and where the records been made in your area or nearer area to your state.
  23. JKim

    Plant collecting

    I don't bring in the dead oak tree from forest to make it a substrate. I use wood pellets commercially available for barbecue grilling. It is natural without any chemical substance mixed up in it. It is completely safe and and a lot easier to handle. In case of leaves, I have oak trees in my backyard. I just cut down a huge one because it was too close to a building.
  24. JKim

    Alaus oculatus molted to L4???

    I don't know how many times A. oculatus usually molts, but number of molts can varying per each specimen. Although a certain species of insect is known to molt only 3 times, some specimens can have 4 times or 2 times. This especially occurs in butterflies and moths. I don't exactly know how many A. oculatus or any other Elaterids molt, so I'm just giving you a basic idea of how insect physiology works. Each individual feed and grow differently. One can grow smaller/larger than other siblings even in a same container. A larva that did not fed on properly or stopped feeding on properly can molt but not evidently grow in sizes. If you obtained all your larvae as L3, then it could be an extra molting (that I mentioned up there) or it could be a simple mistake. Each individual grow differently, and some can be quite a large L2 than other regular and average sized L2 larvae, and can be confused as a small L3. I don't know if it works for Elaterids as well, but in case of scarabs like Dynastinses and Lucanids, if you place fully grown larvae (in container) into the refrigerator (with high temperature = not too cold) for two weeks, and take it out to the room, the larvae tends to construct pupal cell and pupate. This refrigerator trick mimics a cold winter (room temperature → refrigerator), and larvae confuse as it gets extremely warmer (refrigerator → room temperature) afterwards, meaning, it's time to become adults.
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