More lysiosquilla UNKNOWN photos - Roy?

[TrappedMetal]

Ok - so this is a mystery lysiosquilla sp that i have been talking about with Roy for a while now, and i managed due to her moult to get a dactyl spine count - 8.

Thanks, i hope these can help you to ID her for me.
James

 

[BuddhaKiss]

Whatever it is, I reallly like the markings

 

[biomekanic]

That hole in the back is kind of worrisome.

 

[TrappedMetal]

its not really - i was a lot more worried about the torn of appendage and missing anntena scale. This at one point has been severly injured i think and drugs used to catch this animal.
This is where it was caught i believe.
It dosnt look like shell disease as there is no narcosis like in shell disease. I had a p. ciliata that had shell disease, black and algae like. this is perfectly circular like a small spear or something. it had one on the other side of its head in exactly the same place which has gone with this moult.

 

[TrappedMetal]

edit: bump for roy who is hopefully flitting through any information he has of lysiosquilla sp with 8 dactyl spines!

 

[TrappedMetal]

anyone have any ideas?
i downloaded The Revision of the Australian Stomatopod crustacea and had a go, unsuccessfully at IDing it but what is interesting is the only animal listed to have 8 spines is Lysiosquilla sulcirostris.
Any takers?
James

 

[sunce_22]

Judging from the small yellow dots on the carapace near the eyes, my guess would be Lysiosquillina glabriuscula.

Check out Roys list of a reference!

 

[TrappedMetal]

definatly not - the antenna scales are totally different and the appendages are a different colour and the telson is not right.
thanks for trying though im not quite sure why roy hasnt chimed in yet.
More of the last segment and the rostral plate...

Compare the photos in the previous posts where you can see the antenna scale and you can see it is not Lysiosquillina glabriuscula, also Roy lists 6-7 spines on the dactyl however mine has 8. And appears to be female.

 

[T-T-Trigger]

Can you describe your tank setup for this species? I will be receiving one this week and would like to get off on the right foot.

 

[Gonodactylus]

Probably Lysiosquilla tredecimdentata or something close to it. The genus is definitely Lysiosquilla. The markings on the uropods fit (except I can't see a red spine) and the rostrum and A2 scales are right. Nine or 10 spines on the dactyl fits.

This is a very melanistic individual - probably from dark sand.

Roy

 

[TrappedMetal]

Wow Roy i think you've almost hit it on the head with that one. Google results for Lysiosquilla tredecimdentata are images of a mantis very similar to mine, orange eye stalks, band on the telson, anntenal scales are almost the same, and the antennas are almost exactly.
The only thing that is not right with this is the raptorial appendage - there are no tiger/zebra mantis markings at all, they are a pale blue to white colour and they have 8 spines - is it quite usual for something that 'normally' has 9 or 10 spines to have 8? Or could this simply be a different locale? Also roy do females usually have dactyl spines? My understanding is that males do the hunting and female tend the eggs (and the small shrimp that live in the burrow?) so the males would have spines. Of course this is only going of the L. maculata pair image on your site. This i find weird. it is definatly female i even took the animal out of the water to see if it was hiding its gonopods and it definatly has none.
Roy - there IS a red spine on the uropod, well more purple actually, and it was still left in the shed. i will take a photo of this. [done and will post]
This is definatly the closest to IDing the animal we have come but i still dont think the raptorial appendage colouration fits but like i said could this not just be locale? Have you got any of these in the labs roy?
One other thing - the L. tredecimdentata has speckled eyes, whereas this animal does not.
here are the images, one with flash one without, this moult is about 5 days old so please forgive the "freshness".

Thanks for your continuing help with this ID.
Thanks
James

 

[Gonodactylus]

I'm sure it is L. d. The red spines are pretty diagnostic.

Females usually have fewer spines than males - and I could 9. Also, the markings on the female rapt are usually less dramatic.

Don't know where you got the idea that L. d has polka dot eyes like L. maculata, but I don't remember seeing that. It has been several years since I saw L. d in the field, but the eyes look right to me.

Roy

 

[TrappedMetal]

Thanks Roy, i presume L.D is Lysiosquilla tredecimdentata?
I was mentioning the polka dot eyes from

This website

Thanks for the ID. If this animal is in your interest and you could figure out a way to ship it its yours if you want it for research.
thanks for all your help, it is much appreciated.
I dont suppose you know why this animal will have been caught for trade rather than say L. maculata?
Thanks for all your help,
James

Ps T.T - all the care for lysiosquilla is quite easy. I have mine in an 18 inch tank with a 10 inch sand bed. The sand bed needs to be at least as deep as the animal is long. Follow Roys list and you cat go wrong. One thing i will say though is that this animal never made a burrow of its own with the substrate i provided, this is a mix of 4 types of sand of which most was live. If i ever get another lysiosquilla (i dont think i will unless i see an L. lisa or in my dreams an L. mapia) i would spend the extra money and buy miracle mud or something similar to excavate a burrow with.

 

[Gonodactylus]

The image on the website was indeed L. maculata, not L.t (don't know why I called it L. d in the last post). L. t and L. m occur in the same habitat and have almost identical burrow. Collectors would not know the difference. It is unusual that you got a female. Given that the males do most of the hunting and burrow defense, they are usually the ones caught.

Thanks for the offer, but I think it would be too much trouble to ship it to Berkeley. I do have a student working on the phylogenetics of Lysiosquillidae. She might like a genetic sample since we don't have any tissue from L. t. I'll give her your contact info when she gets back next month.

Roy

Roy

 

[TrappedMetal]

thanks, would be good to be able to help you or your underlings in any way i can!
- last few things - i dont suppose you have (or know of) any papers on L.T? Otherwise i will just study the L.M papers out there if i can find them. Other than the revision of Austrlian stomatopod crustacea i really cant find any further reading.
- What are your opinions on the Lysiosquilla and their shrimpy companions? Do all Lysiosquillas have this mystery symbiotic relationship with these shrimp or just L. mapia? The site i read this on states the shrimp as Alpheidae shrimp - arent these small Pistol Shrimp
Thanks
James

 

[Gonodactylus]

If you run a Google Scholar search, you will get a few hits including this old paper of mine.

http://books.google.com/books?hl=en...kI-&sig=lF-pSLrBH8s3fEVYtDHfsjHxY6o#PPT384,M1

Basically, anything about L. m will apply.

I know that L. m sometimes has commensal shrimp as does L. lisa. Species that I have seen photographed with them are Periclinmenes imperator, Stenopus tenuirostris, and Thor amboienensis. There is a snapping shrimp that lives in Squilla burrows, but I don't know of any that are found in association with Lysiosquillids.

Roy

 

[TrappedMetal]

woop thanks roy - i nearly wet myself when i saw that paper, i thought it was all stomatopod based!