Grice and Hulsemann, 1968
Short Description:
Euchirella speciosa is an aetideid calanoid copepod known after female (4.40-5.10 mm in length) from the southern part of the Pacific Ocean in epipelagic.
Taxonomic Description:
Female. (Description after Grice and Hulsemann (1968) with modifications). Total length 4.40-5.10 mm. Cephalothorax about 5 times longer than abdomen. Anterior part of cephalon smoothly rounded (lateral view), without crest. Posterior Th5 corners rounded (lateral view), rectangular (dorsal view). Genital segment asymmetrical: when looking dorsally its left side with 2 small projections. A1 reaching caudal rami. Ri A2 is a fourth of Re length, external Ri2 A2 lobe with 5, internal with 4 setae; basipodite and Ri1 A2 with 1 seta each. Mx1 gnathobase with 3 setae on posterior surface. Re P1 with 3 external spines. P2-P4 segmentation typical of the genus. P4 coxopodite with 2 robust spines.
Male unknown.
Vertical distribution:
The species was found in epipelagic in total hauls from 1700 m.
Geographical distribution:
The species was found in the south-western and south-eastern parts of the Pacific Ocean (Grice and Hulsemann, 1968; Bradford and Jillett, 1980; Von Vaupel Klein, 1984).
Type locality: 30°57'-31°05'S, 89°13'-89°35'W (Grice and Hulsemann, 1968).
Material examined:
The species absent in the collections of the Zoological Institute, Russian Academy of Sciences St. Petersburg.