Alvarez, 1986
Short description:
Mesocomantenna spinosa is an aetideid calanoid copepod known after female (1.9 mm in length) off Brazilian continental shelf and slope.
Taxonomic Description:
Female. (Description after Alvarez (1986) with modifications). Total length 1.9 mm. Cephalothorax about 3.7 times longer than abdomen. Cephalon partly fused with Th1. Rostrum absent. Th5 posterior corners upturned backwards, reaching almost the posterior end of genital segment (dorsal view). A1 24-segmented, exceeding Th2. Structure of oral parts and P1-P4 typical of the genus.
Male unknown.
Vertical distribution:
The species was found at depth of 346 m (Alvarez, 1986).
Geographical distribution:
The species is known from type locality only: the continental shelf and slope of Brazil (Alvarez, 1986).
Type locality: 26°58'S 46°32'W (Alvarez, 1986).
Material examined:
Species absent in the collection of the Zoological Institute, Russian Academy of Sciences, St. Petersburg.