3.26 Clausocalanus in gens
Frost and Fleminger 1968
Clausocalanus ingens Frost and Fleminger,
1968: p. 39, pIs. 19-23 - Ramirez, 1969: p.
52, pI. 8 figs. 49, 50, 51.
Clausocalanus laticeps Tanaka, 1960a: p. 32,
pI. 11 figs. 1-14.
Body length -
females: 1.67-1.84mm (2 specimens)
Female. Body shape similar to C. brevi pes .
Cephalothorax 2.6 times longer than wide.
Rostrum slender and curved in lateral view.
Al almost reaching end of cephalothorax.
Proportional lengths of cephalothorax
and
abdomen
75 : 25;
proportional
lengths of abdominal somites and furca
36:20:17:12:15 = 100. In lateral view,
ventral lobe of seminal receptacle small;
Clausocalanus ingens
153
dorsal lobe broad and long, directed dorsally.
P5 small, 3-jointed; terminal points of last
joint smooth and lacking spinules.
Remarks
Our specimens concord perfectly with those
described by Frost and Fleminger (1968).
We did not find adult males.
Distribution
C. ingens is generally present in warm
and temperate waters of the Southern
hemisphere. It was reported for the first
time in Chilean fjords by -Marin and
Antezana (1985). In the present study, the
species was found from 150-200 m at a
single station in the Pacific area and from
0-50m at two Central stations in the Straits
of Magellan.