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 photos copyright John P. Hoover unless otherwise credited

Interesting annelid worms not in Hawaii's Sea Creatures
Here's an (unofficial?) Bishop Museum list of Hawaiian polychaete worms

      Ralph Turre found and photographed this yellow worm off Sugar Beach, Kihei, Maui, in April 2014. It corresponds well with photos of Chloeia fusca in Humann and DeLoach's book Reef Creature Identification: Indo-Pacific. According to the book, the bristles can be yellow, brownish, or white, but the two parallel dark lines down the center of the worm are diagnostic. (However, note that a very similar worm, shown below, was identified by specialist Leslie Harris as a species of Notopygos, thus casting a measure of doubt on my ID.)
The similar Golden Fireworm, Chloeia flava, also occurs in Hawai`i. Instead of parallel lines, it has a series of dark spots outlined in white running down the center of the body. Both are widespread Indo-Pacific species.

Notopygos sp.
      The worm in this photo was found in 2006 by Darcy Kehler near Buzz's Wharf restaurant in Lahaina, Maui, at night. Cory Pittman photographed it. Although it resembles the worm above identified as Chloeia fusca, annelid worm specialist Leslie Harris identified it as a species of Notopygos. She writes: The second is a species of Notopygos. Your second shot of it shows the caruncle really nicely. It's tripartite & the lateral bits are large & conspicuous. That separates it from Chloeia in which the small lateral sides of the tripartite organ are covered by the median region.


photo: Dick Lundholm

MARINE LEECH 1 Trachelobdella lubrica ?
      Sharon Williams found this animal at the dive site called Manta Ray Bay, near Honokohau Harbor on the Kona coast of the Big Island. Dick Lundholm took these photos. Dick reports that it was about 1 to 1 1/2 inches long and was curling and uncurling, extending itself and contracting.
      Leeches are a type of segmented worm in the Phylum Annelida. (Bristle worms, fireworms, Christmas tree worms, spaghetti worms, and earthworms all belong in this group.) Leeches are distinct in that they have a sucker at each end of the body. Most but not all are blood-suckers which attach to other animals. This one was probably waiting for a fish to swim by. Sharks in Hawaii often bear other species of leeches on the gills or fins.
      Leeches live in fresh water, in salt water, and on land. At least 160 species are marine, most of which occur in polar seas, or in cold temperate waters. At least 3 are known so far from Hawai`i.
I sent the photos to Dr Eugene M. Burreson of the Virginia Institute of Marine Science, who replied: "The large bulges on the side are called pulsatile vesicles. My guess is that it is Trachelobdella lubrica, a leech that is fairly common on the gills of tropical marine fishes (non-elasmobranchs), and known from Hawaii. T. lubrica has large pulsatile vesicles like the ones in the picture. I have examined specimens of it in the Bishop Museum. There are few good photos of marine leeches in their natural habitat, so it was a pleasure to see this one.
Pauline Fiene adds "We have seen a different species on whitetips and they move just like that."

photo: Dick Lundholm

photo: Dick Lundholm

photo: Dick Lundholm

MARINE LEECH 2 Stibarobdella macrothela
      Kara Osada of Hilo sent me this photo collage of a leech which was removed from a manta ray. Dr. Eugene M. Burreson writes: "Based on the large orange ocular eyespot on the oral sucker in one of the photos, the leech is likely Stibarobdella macrothela Schmarda. This leech is relatively common on tropical sharks and less common on rays. It is known from Hawaii." Subsequently, Pauline Fiene sent me a couple more shots of the same species (the bottom one taken by Warren Blum in Maalaea Bay, Maui). Dr. Burreson writes: "The first picture is definitely Stibarobdella macrothela because of the paired, large, orange eyespots. My previous message to Kara may have suggested that there is only one eyespot, because that's all I could see in her photo, but they are definitely paired. The second leech is most probably also S. macrothela, but I can't see the oral sucker very well. It is interesting to get these photos of live leeches to see the variation in color. Most specimens I have seen (rarely alive) are greenish with white tubercles on some segments, but these seem to be more purple. I have also seen them with orange pigmentation."

photo: Pauline Fiene

photo: Warren Blum


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  Text and photos copyright John P. Hoover unless otherwise credited