When you're playing cribbage, as Sandra and I do most every afternoon, the best you can do is hold for the run and hope that Lady Luck is on your side. When it comes to snorkeling, the best you can do is get in the water as often as possible, be observant and, as in cribbage, hope that Lady Luck blesses your effort.
Tuesday morning we showed up at Kahalu'u a bit before 9 AM. While Yasuko was setting up the ropes and posting the admonitions (Don't step on anything!) I had a brief conversation with the boss, also known as Kathleen Clark-san, and then it was time to hit the water. The tide was high enough that getting in was fairly painless, there was virtually no current and the water was really clear.
Not too far out, I looked into a coral depression and saw a tiny xanthid crab. John Hoover tells us that xanthid crabs are sometimes called dark fingered crabs, stone crabs or mud crabs. Most are pedestrian in appearance and spend their lives in crevices or under rocks, so they are rarely seen.
Liomera tristis, Kahalu'u Bay, Hawaii Island April 2021 |
This little crab, which was a mere 15 millimeters across his carapace, was very patient with me. He permitted me to take four pictures over a couple minutes without moving a single one of those aforementioned millimeters. Either I was looking at the molted exoskeleton of a crab or, to paraphrase John Clease, he had ceased to be, he was bereft of life...he was an ex-crab. Despite his apparent morbidity, and his being truly miniature, I could see that his walking legs were striped red and white, much like candy canes or the the stripes on the flag of our country. (In foreign and domestic affairs may she always be in the right. But our country right or wrong. Stephen Decatur, loosely.) As you can see, in addition to the stripes he does have dark fingers.
The crab was well documented and one can only look at an inanimate object for so long, no matter how stripey, so I shoved off in search of other worthy critters and fish. I turned over a couple shells, including this nice punctured miter, without coaxing any hermits to make an appearance.
Punctured Miter sans hermit. C'est domage. |
By this time, almost 10 AM, there we plenty of human bodies littering the rocky entrance, but soon I was up in the shelter, hailing Kathleen Clark. Quick as a sea hare she had John Hoover's critter book. The closest thing we found was Liomera rubra, Edwards 1865. This small crab is pictured blow.
I wasn't sure if Kathleen was willing to accept that identification, but I certainly was not. Once I got the camera dried off and the SD card into the computer, I improved the picture to what you see above.
Now having a good look, I referred to that wonderful source for the identification of absolutely anything, Google Images. Dr. Google, PhD did not disappoint me; a few minutes of perusal revealed a picture, supplied by the floridamuseum.ufl.edu very similar to the crab I had photographed. The picture had been taken in Guam and the name applied was Liomera aff. tristis.
Liomera rubra, courtesy of the Crab Database, University of Florida. |
As it turns out, aff. is short for affinis which means that the species may be similar to another and the nomenclature is not finalized.
As the crab was not in John Hoover's book, I forwarded it to the Great Oz. He agreed that my identification was probably correct. He had not heard of this crab before, but returned to me a reference from Peter Castro's checklist of Hawaiian Crabs:
Patsy McLaughlin 2007 |
Sandra's delicate fingers and Calcinus revi. |
restaurant in France. (Hence, a French restaurant.)
What a nice surprise to get some news from you! I remember very well the time we were working together with Patsy. I feel like you: she was an incredible human being. ...
Rare sightings of common species are not unusual for Decapoda, living mostly at night and experts in the art of camouflage.
I hope that you are still well and enjoy your life in Hawaii, far away from the COVID.
Take care of yourself.
Joseph that has kept the spirit of Patsy!
Achillles Tang, Kahalu'u April 2021 |
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