-
- Posts: 2
- Joined: Sun Nov 26, 2023 7:33 am
Looking for "Käfer Mitteleuropas - Larven"
by Lucavs » Sun Nov 26, 2023 7:38 am
I'm looking for a while for the pages dedicated to the description and iconography of the larvae of species belonging to the genus Stephanopachys, (Bostrichidae). Can you help me? In Italy I have a lot of difficulty finding this source, where I believe they are well described.
A thousand thanks
Luca
-
- Posts: 11
- Joined: Mon May 23, 2022 9:22 am
Re: Fumigant Lifetime
by Chris Grinter » Sun Nov 26, 2023 6:07 am
-
- Premium Member - 2024
- Posts: 604
- Joined: Tue May 24, 2022 4:55 pm
Re: Yearly donation to the forum - Premium Members 2024
by livingplanet3 » Sat Nov 25, 2023 5:35 pm
-
- Site Admin
- Posts: 466
- Joined: Fri Mar 18, 2022 9:51 am
Yearly donation to the forum - Premium Members 2024
by wollastoni » Sat Nov 25, 2023 3:06 pm
You will soon receive an email from me about the yearly donation to Insectnet.
Insectnet Forum and the Classifieds are great assets for all of us. It is a friendly place for entomologists where they can share their passion.
The yearly cost of the Classifieds software, the new forum development and the free-attachment-for-all policy is a high cost.
So those of you who find the InsectNet Forum & Classifieds useful and who can afford it, a small donation would be appreciated.
To donate, go there and click on the donate button : https://www.insectnet.com/donate
Benefactors will become "Premium Members" with a 5-star status.
Thank you !
Olivier
PS : if you don't receive your Premium status, send me a message, as sometimes your forum username has no link with your paypal name.
-
- Site Admin
- Posts: 466
- Joined: Fri Mar 18, 2022 9:51 am
Re: "Reptile Heaven" and "WildinsectUSA" = SCAM
by wollastoni » Fri Nov 24, 2023 2:14 pm
I see they have "improved" their scam listing now some very rare species at high price (but affordable for the rarity) : https://reptileheaven.com/product/agria ... ournierae/ The real value of this pair would be at least $1,000.
I guess they steal pictures on the web of sold rarities and list them as if they have it. A simple google search about the rarity can lead you to their website.
-
- Posts: 30
- Joined: Mon May 23, 2022 8:07 pm
-
- Posts: 114
- Joined: Mon May 23, 2022 2:08 pm
Re: Fumigant Lifetime
by jhyatt » Tue Nov 21, 2023 7:12 pm
Yep, it's a cholinesterase inhibitor. My bug room is a roughly 60' X 40' open basement, fairly well ventilated, and I don't spend huge amounts of time there. Still, it's a concern. Paradichlorobenzene also can produce neurological effects. PDCB is more volatile than dichlorvos and needs replacement much more often, so I've switched to dichlorvos. But I think I will follow Shuey in using smaller pieces than I have been.
It's a dilemma; I can see why big museums have gone over to watching and freezing when infestations occur. But without a really big freezer, that's impractical at home.
jh
-
- Premium Member - 2024
- Posts: 104
- Joined: Mon May 23, 2022 12:09 pm
Re: Fumigant Lifetime
by mothman55 » Tue Nov 21, 2023 5:45 pm
-
- Posts: 67
- Joined: Wed May 17, 2023 5:29 pm
Re: Enough already, with the fake aberrations
by EdTomologist » Tue Nov 21, 2023 4:41 pm
As someone who wrote their thesis on the topic of wing development signaling, tungstate is mainly effective for nymphalids and certain groups of butterflies. It’s less toxic than other compounds and easily accessible. This makes it a good and easy option for producing aberrations.
There are in reality numerous compounds that induce aberrations through different mechanisms. Some of them mimic stress responses that result in darker wings. It’s a common immune response in insects to produce melanin.
There are also variable patterns that can be induced depending on the stage of injection.
I have been working with a new compound that can actually lighten the wings instead of darken them.
Given that my work is still to be published I don’t want to reveal too much. I also do have a concern regarding individuals using my work to sell man made aberrations but I believe it’s more important to have knowledge freely accessible.
I should also note that unlike tungstate where the mechanism of action (how it works) is unknown, a lot of other compounds we know exactly how they act. The main difference between compounds is their toxicity, the cost, and the difficulty in acquiring the compounds (must have scientific institutional purchase accounts).
Below is an artificial aberration from my research a while back plus link to other pictures.
[media] https://x.com/edtomologist/status/17270 ... UjOYW-YQdw[/media]
Dive into the fascinating world of insects! Explore my blog, Instagram, and website. Don't miss our newsletter and the latest from butterfly adventures!
-
- Global Moderators
- Posts: 161
- Joined: Tue Mar 22, 2022 2:27 pm
Re: Fumigant Lifetime
by Jshuey » Tue Nov 21, 2023 3:21 pm
John
-
- Posts: 114
- Joined: Mon May 23, 2022 2:08 pm
Re: Fumigant Lifetime
by jhyatt » Tue Nov 21, 2023 3:07 pm
Of course the usable lifetime may vary from drawer to drawer, depending on the rate of air exchange inside the particular drawer. I renewed all of mine about 1 year ago; I guess I'll let them go at least another year, or 2 or 3, unless I find an infestation... and I'll replace it in any drawers where I notice an unusually pale chunk of dichlorvos strip. I suspect there's no valid general answer to my original question.
jh
-
- Global Moderators
- Posts: 161
- Joined: Tue Mar 22, 2022 2:27 pm
Re: Fumigant Lifetime
by Jshuey » Tue Nov 21, 2023 2:02 pm
I'll be renewing it all over the long weekend this week.
John
-
- Posts: 11
- Joined: Mon Aug 15, 2022 5:56 am
Re: Enough already, with the fake aberrations
by teinopalpus » Tue Nov 21, 2023 9:26 am
And then .. sorry I cant skip that ... climatic change. Species are moving to new places , also on same place weather is changing and dramatic weather anomalies are present frequently and surely phenotype will react to changed conditions.
So as for me - as long as specimen has correct label information with all relevant data, it is OK. And it is only decision of collector if he find value of such specimen for his study/collection.
Jan
-
- Posts: 188
- Joined: Mon May 23, 2022 6:44 pm
Re: Fumigant Lifetime
by Paul K » Tue Nov 21, 2023 1:36 am
-
- Posts: 114
- Joined: Mon May 23, 2022 2:08 pm
Fumigant Lifetime
by jhyatt » Mon Nov 20, 2023 8:53 pm
But I wonder how one can tell when the fumigant is exhausted and should be replaced. I've been doing this when the originally deep yellow squares fade to a very pale yellow color. This takes about 3-4 years in a drawer of average tightness, in my experience.
Am I being risky and should be replacing them more often? Or am I leaving money on the table by replacing them too frequently? Does anyone have any actual data on the useful lifetime of dichlorvos strips?
Cheers,
jh
-
- Global Moderators
- Posts: 773
- Joined: Tue Mar 22, 2022 12:24 pm
Re: How Genetic studies reveal new relationships, species
by adamcotton » Mon Nov 20, 2023 8:34 pm
I think it is desirable to find morphological as well as sequence differences when naming something.
Adam.
-
- Premium Member - 2024
- Posts: 604
- Joined: Tue May 24, 2022 4:55 pm
Re: U known
by livingplanet3 » Mon Nov 20, 2023 6:53 pm
It's the caterpillar of a geometrid moth, commonly called an "inchworm" -
https://en.wikipedia.org/wiki/Geometer_moth
https://bugguide.net/node/view/188
These caterpillars usually mimic twigs of the plants they feed on, to conceal themselves from predators such as birds.
-
- Premium Member - 2024
- Posts: 933
- Joined: Mon May 23, 2022 2:30 pm
Re: How Genetic studies reveal new relationships, species
by Chuck » Mon Nov 20, 2023 6:42 pm
Given that one could well argue that COI is better at differentiation than morphological comparisions it seems this gap is more reliable. Given that, I've read several papers lately that show COI for broad-ranging taxa that are broken into clades (or some such) and so long as it exceeds 1.2% (or pick a number) then Joe Anybody could jump and describe dozens of new species based on the gap alone.
-
- Posts: 388
- Joined: Mon May 23, 2022 5:58 pm
USA Cerambycidae2
by 58chevy » Mon Nov 20, 2023 5:54 pm
- Attachments
-
- ceram6.jpg (51.4 KiB) Viewed 5150 times
-
- ceram5.jpg (76.92 KiB) Viewed 5150 times
-
- ceram4.jpg (63.87 KiB) Viewed 5150 times