Vol. 48 No. 4, 2009
A Review of Typhlamphiascus Lang, 1944 (Copepoda: Harpacticoida: Miraciidae) with a New Species Typhlamphiascus higginsi from Phuket Island, Thailand
Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
Supawadee Chullasorn (2009)
A new species belonging to the Miraciidae Dana, 1846 (Copepoda:
Harpacticoida: Miraciidae), is described from a seagrass bed dominated
by Enhalus acoroides at Banpaklok, Phuket I., Thailand. An amended diagnosis of Typhlamphiascus
includes: rostrum well-developed, expanded at the base with a small
sensillum on each side of the rostrum about 1/5 from the acute
tip. The new species, T. higginsi sp.
nov., is similar to other species of the genus by having 8 segmented
antennules, an almost linear body shape, and the baseoendopod of the
5th legs with fork-tipped setae. Autapomorphies of the new
species are provided by the following characters: the inner edge of the
basis of male 1st legs with only 3 chitinous lamellae; the dorsal edge
of the female 1st abdominal somite ornamented with 1 row of 7 min
spinules on each side, the armature of the abdominal somites furnished
with rows of triangular spinules along the ventral edge of the 3rd and
4th somites in special patterns above the hyaline frills; the caudal
ramus with a conical shape twice as long as broad, and the inner edge
with 2 min spinules at the base.
Key words: Typhlamphiascus higginsi, New species, Enhalus acoroides, Phuket I.
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