76
Systematic Account
3.9 Candacia norvegica Boeck 1864
Candace norvegica Boeck, 1864: p. 235
Candacia norvegica Sars, 1903: p. 134, pIs.
89,90 - Wilson, 1932: p. 138, fig. 94 - Grice
and Jones, 1960: p. 288, figs. 46-65 - Grice,
1963: p. 178, figs. 1,27, 65.
Body length -
females: 2.90-3.14mm (7 specimens)
males: 2.82-2.96mm (10 specimens)
Female. Body robust with truncated forehead
characteristic of genus. Last thoracic somite
bears straight, pointed symmetrical processes. Proportional lengths of cephalo~horax
and abdomen 77: 23; proportional lengths of
abdominal somites and furca 48: 21 : 15: 16 =
100. In dorsal view, genital somite bears
short bifid processes at midpoint of lateral
margins; right process shorter than left.
Above bifid processes, genital somite bears
tufts of hairs on either side. Distal joint of P5
bears two broad, unequal terminal spines,
two shorter spines on the outer margin and
three setae on the inner margin.
Male. Same body shape as female but with
asymmetrical posterior processes on last
thoracic somite. Right comer lamellar in
shape with depression along midline, turned
inwards and reaching about midpoint of
genital somite. Left comer pointed as in
female. Proportional lengths of cephalothorax and abdomen 74: 26; proportional
lengths of abdominal somites and furca
28:19:19:11:8:15 = 100. In dorsal view,
genital somite with a stout process on right
side, distal end of which divided into 3 lobes.
P5 uniramous, asymmetrical; left leg 3jointed; 2 distal joints bear long, dense hairs
along margin. Right leg ends in straight pair
of tongs.
Remarks
Our female specimens bear bifid processes on
both sides of the genital somite, as reported
for the variety tropica by Sewell (1932). They
thus differ from the simple spines reported by
Wilson (1932) or bifid tip of the left spine by
Grice and Jones (1960). These latter authors
maintain that the size and shape of these
processes are variable and of poor diagnostic
value. The lamellar process on the posterior
right comer of the male thorax has not been
described or shown before in detail.
Distribution
C. norvegica has been reported for the North
Atlantic (Boeck 1864; Sars 1903; Farran
1948), Indian (Sewell 1932) and North Pacific
(Tanaka 1953; Grice and Jones 1960) Oceans,
as well as off the Chilean coast (Fagetti
1962). In the present study, C. norvegica was
only present from 100-700 m in the Pacific
area of the Straits. This represents a first
record for the Magellan region.
Systematic Account
3.9 Candacia norvegica Boeck 1864
Candace norvegica Boeck, 1864: p. 235
Candacia norvegica Sars, 1903: p. 134, pIs.
89,90 - Wilson, 1932: p. 138, fig. 94 - Grice
and Jones, 1960: p. 288, figs. 46-65 - Grice,
1963: p. 178, figs. 1,27, 65.
Body length -
females: 2.90-3.14mm (7 specimens)
males: 2.82-2.96mm (10 specimens)
Female. Body robust with truncated forehead
characteristic of genus. Last thoracic somite
bears straight, pointed symmetrical processes. Proportional lengths of cephalo~horax
and abdomen 77: 23; proportional lengths of
abdominal somites and furca 48: 21 : 15: 16 =
100. In dorsal view, genital somite bears
short bifid processes at midpoint of lateral
margins; right process shorter than left.
Above bifid processes, genital somite bears
tufts of hairs on either side. Distal joint of P5
bears two broad, unequal terminal spines,
two shorter spines on the outer margin and
three setae on the inner margin.
Male. Same body shape as female but with
asymmetrical posterior processes on last
thoracic somite. Right comer lamellar in
shape with depression along midline, turned
inwards and reaching about midpoint of
genital somite. Left comer pointed as in
female. Proportional lengths of cephalothorax and abdomen 74: 26; proportional
lengths of abdominal somites and furca
28:19:19:11:8:15 = 100. In dorsal view,
genital somite with a stout process on right
side, distal end of which divided into 3 lobes.
P5 uniramous, asymmetrical; left leg 3jointed; 2 distal joints bear long, dense hairs
along margin. Right leg ends in straight pair
of tongs.
Remarks
Our female specimens bear bifid processes on
both sides of the genital somite, as reported
for the variety tropica by Sewell (1932). They
thus differ from the simple spines reported by
Wilson (1932) or bifid tip of the left spine by
Grice and Jones (1960). These latter authors
maintain that the size and shape of these
processes are variable and of poor diagnostic
value. The lamellar process on the posterior
right comer of the male thorax has not been
described or shown before in detail.
Distribution
C. norvegica has been reported for the North
Atlantic (Boeck 1864; Sars 1903; Farran
1948), Indian (Sewell 1932) and North Pacific
(Tanaka 1953; Grice and Jones 1960) Oceans,
as well as off the Chilean coast (Fagetti
1962). In the present study, C. norvegica was
only present from 100-700 m in the Pacific
area of the Straits. This represents a first
record for the Magellan region.