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About JKim

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    Louisiana, USA
  • Interests
    Scarab Fauna of Louisiana

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  1. Among many C-shaped scarabaeoidea larvae, Lucanidae is the only (with few exceptions) group that has a longitudinal or Y-shaped anal opening, whereas other scarabs are usually transverse. I also have experiences of finding some stag beetle larvae under a rock hard, barely (or not at all) decayed fallen oak tree. Lucanus species are known to laying their eggs not inside a decayed tree, but right around tree roots or near fallen trees where it is touching soil.. So I suppose that's how I encountered them.. Mine turned out to be Lucanus elaphus. It is difficult to identify based on larval mo
  2. The blacklight thatbis not coated with purple is the one you have to use in fluorescent tubes (18 watts or bigger). *No LED, no battery running small sized blacklight, No blacklight flashlight.
  3. Some species in genus Dorcus are tend to be very aggressive, and potentially kill females, like Dorcus titanus sspp., Dorcus alcides, etc. so some breeders close and lock male mandibles by force (using zip ties) to create safer mating environment for females.
  4. 12 females of Lucanus placidus in a single night (with one male). This year seems very interesting so far. I've only collected 1-2 specimens of Lucanus placidus each year from 2017 to 2020, but I collected over 30 specimens this year from one location. Even more: 12 females with one male in one single night. P.S. I don't have those anymore as I already sent out to my colleagues here and there, don't have enough males, so I don't have any pairs to offer. sorry, don't send me dm
  5. Difference between the two traps illustrated in this original post is whether you are only collecting flying insects that drop when they hit wall while they fly (first image), or go up or go down for both (second image). First pictured trap can be used especially for Cetoniines and Rutelines, or anything that drops when they hit a wall while flying. Second pictured trap is for more wider range of taxonomic groups including fly, butterfly, bees (for top collector), and beetles (for bottom collector). Of course what you can collect may depends on your location, bait types, etc. These are no
  6. I used to keep them in bedroom, until size of their portion gotten bigger... like a decade ago. Then now I keep them in my other room with computer/desk/books, and having bedroom just being bedroom alone.
  7. If you are referring the green as GREEN, then NO. However, there are some phenotypic variation in overall color being yellowish grey to bluish grey. Some of Japanese bred specimens are tend to be white overall with no or barely any spots. You can tell male is vividly yellowish while female is more of blue toned.
  8. First row, from left to right Dynastes hercules hercules Dynaste neptunus Dorcus hopei Prosopocoilus giraffa Allotopus rosenbergi Trypoxylus dichotomus Second row, from left to right Prosopocoilus inclinatus Odontolabis femoralis Lucanus maculifemoratus Hexarthrius parryi Megasoma elephas Xylotrupes gideon
  9. If you alone track it, you will have to attach something that can send out signal, which will require a power (battery) and antennae, and to run such program, a chip... Something high tech plus very tiny for the size of BDB can easily transport without any hassle. If you understand what I mean... the answer (or a way to do it) to that question will be pretty difficult..
  10. I believe there is no studies done for immatures of Lucanids in the North America yet... Morphological characters are not yet described.
  11. When I reared Actias luna, I didn't have much problems other than when reared in small container, or a container with slippery walls where newly emerged moths cannot stayed on to completely widen their wings... They do need some large containers when they are in pupal stage so they can climb up to when they emerge out.
  12. Well, to track beetles, there has to be large enough group of people who are interested in to devote their time, and beetle itself has to travel long distance regularly to actually monitor them, but that's... rather impossible. Monarchs to travel a long distance regularly in multiple generations, so tagging them and monitoring them makes a lot of senses, but in case of beetles, they don't travel, and they don't really fly long period of time as butterflies do. Some scientific researches are done like how Goliathus has provided, as well as for military usage (drones), but I don't think any rese
  13. Seems okay to me. Did you just receive it in package? if so, it is probably due to hot weather. Keep them in cool, they will be okay.
  14. This must be a part of Be-Kuwa article... Before I even read this article in Be-Kuwa, I actually constructed a hypothetical study in enlarging insects by either transplanting corpora allata or somehow injecting juvenile hormone to extent larval stage, and asked comments from my insect physiology professor, and he said: that's not gonna work. 😅😅 He commented me that properly transplanting such organ is nearly impossible, and even with success to have it produce additional juvenile hormone, larvae may not successfully molt (pupate) to pupal stage properly. Have you ever experienced a p
  15. Yea.. unless you are using agricultural ferment starter (which is usually anaerobic), your substrate should be made aerobic. So if you don't mix it often enough while it is in process of fermentation, your substrate won't ferment properly (to feed your scarab larvae).
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