Well, that was horrifyingly unexpected....

l4nsky

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Feels like I just won one of the world's worst lotteries......

In November 2022 I got a number of WC Aphonopelma sp Dragoons specimens ranging from 3/8" slings to subadult specimens with the intention of breeding them. I've had one "problem child" as it were, a 1/2" sling that has only molted once in my care and has been off food for a few months now. The other 3/8" sling I got way back when is now a 1.5" DLS female if that gives you any idea of the growth discrepancy.

Anyways, today I lost that sling and in one of the most unexpected and gruesome ways possible. A parasitic fly larvae likely of the family Acroceridae, which has apparently been slowly feeding on the sling since it's time in the wild, erupted out of it's abdomen, killing it in the process.

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Now, the reason I say that this is a horrible lottery is because of the absolute rarity of Acroceridae spp, with most species only being known from less than 10 specimens. Given the highland nature of the collection point in the Dragoon mountains and the rarity of this family in general, it's highly likely this is a new species of fly and it may be decades until another is even seen. It doesn't pose a threat to my collection due to the specific nature of how they reproduce (mated females, which this one won't be, don't seek out spiders like tarantula hawks. Instead the larvae seek out the host once hatched), but has been removed from the facility out of an abundance of caution. I'll allow the fly to finish pupating, euthanize it, and place it in ethanol while I find an entomologist with an interest in the family.

It sucks that I lost a sling in the process, but there are a few silver linings here. It is nice having an explanation as to why I had difficulties with this sling (so many "problem child" slings just up and die without any kind of indication to the cause). It is also nice that some good might come out of it's death, namely potentially furthering the study of Acroceridae spp.

I think I'll go buy a lottery ticket.....
 

l4nsky

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You are an insanely lucky and unfortunate man. I envy this tbh.
More unfortunate then you know lol. That was my last unsexed WC specimen, which leaves me one ancient MM and one unsexed sling I salvaged from the eggsack my female ate. The rest are female. Hope the deal for this other male goes through.....
 

LucN

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Woah ! I've only read about these types (perhaps not this particular genus, but still) of parasites on the Baerg book and if I recall, they're also mentioned in the TKG. First time reading an account of this type of parasite here. Shame you lost your T, but this will definitely be a boon for whomever studies these.

Equally interesting and disheartening. Hopefully, no others will have this issue.
 

Ultum4Spiderz

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More fuel to the fire for my hatred of these parasites along with phorid flies that killed a few of my Ts and hundreds of roaches. Just like I always joke in videos of them that someone should be getting rid of tarantula hawks because they grow so fast and kill slow growing spiders. Essentially the invert version of dodo birds 🦤 there sitting ducks . Versus a sparrow size wasp.
but nature is nature can’t change that.
 

Wolfram1

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to think it even managed to molt with the parasite already inside.... insane

such a cool fly though, i hope you can somehow have it be useful to science
 

The Snark

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I keep telling everyone ALIENS is a TRUE story!
Inspired by mom nature and her infinite supply of quite normal and natural animals that fulfill a very necessary, crucial part of the circle of life.
 

Tentacle Toast

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Yeah, man...that's a mixed bag, there. Sorry about your spider first & foremost. Kinda neat about the fly bit, but certainly not a salvaging occurrence. Unless somehow the thing is worth something to someone...maybe start putting the feelers out; perhaps the maniac that's into it will have another lead on a replacement for you...or something. All the best, man. Play the numbers.
 

ThatsUnpossible

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I'm not as knowledgable about these things as you guys but it blows my mind that this parasite has been living inside this poor little guy for such a long time. Unlucky, OP. Super-unlucky sling RIP :depressed:
 

advan

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Sorry for your loss. This is right up @Philth 's alley. Keep it and see what it turns into. Tom headed to Phoenix before we went searching for new Aphonopelma in the Dragoons. A very cool sky island. -Chad
 

l4nsky

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Sorry for your loss. This is right up @Philth 's alley. Keep it and see what it turns into. Tom headed to Phoenix before we went searching for new Aphonopelma in the Dragoons. A very cool sky island. -Chad
Thanks, I hope to make it out there myself at some point. I do plan on allowing the fly to finish pupating. It's been removed from my climate controlled spider facility as a precaution and is being kept at the same temp/RH in one of my greenhouses. I've also been given the name of an entomologist in AZ who I plan on contacting once the fly emerges.
 

spideyspinneret78

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It's a bummer that you lost the sling but this is also fascinating. I hope the entomologist that you contacted can learn something worthwhile about this specimen.
 

l4nsky

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I didn't think it would make it as the pupae looked rather shriveled up and possibly starting to decompose, but I heard some buzzing this morning in my greenhouse...
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Guess it's time to contact that entomologist lol.
 

Ultum4Spiderz

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TheWidowsPeak

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