6.3 Loricoecia loricata Claus, 1894
Conchoecia loricata Claus, 1894: p. 4, pl. 3 figs.
24-30- Angel, 1981: p. 558, fig. 194/56.
Conchoecia loricata typica Mtiller, 1906a: p. 95,
pl. 22 figs. 1-9.
Conchoecia loricata loricata Mtiller, 1912: pp. 80,
81.
Loricoecia loricata Poulsen, 1973: pp. 145-147,
figs. 72, 73.
Conchoecia (Loricoecia) loricata Deevey, 1978:
p. 60, fig. 15d-f - Deevey, 1982: pp. 157, 158,
fig. 30.
Carapace length -
females: 2.05 mm
males: 1.86 mm
Female. Carapace large and regularly rectanguIar; height about 1/2 the length; rostrum almost
straight; incisure open and moderately deep;
dorsal margin weakly concave below the shoulders; posterior margin convex, making a blunted
right angle with the end of the dorsal margin;
ventral margin slightly convex. Asymmetric
glands at the usual sites; lateral corner glands
present; medial glands numerous posteriorly.
Shell sculpture consists of distinct striae which
run parallel to the dorsal and posterior margins;
from the incisur they curve towards the ventral
margin, thus intersect that margin in the anteroventral region, giving a denticulate effect; a
weak cross-striation is observable anteriorly.
Cap of the long frontal organ is united with the
stern and produced distally; ornament of many
short and stiffhairs everywhere except dorsodistally. Al segments spinulose, with a dorsal bristle; the 5 end bristles comprise a long slender 'e'
bristle and 4 short sensory 'pipe' bristles.
Male. Carapace similar to that of the female but
smaller and with paired dorsomedial glands
posteriorly. Cap of the frontal organ separated
from the stern; ornament of short and rather stiff
hairs, except dorsodistally, where it is smooth.
Al 'e' bristle bearing a double row of20-22 backwards-directed 'thorns' (short spines). A2 clasping joints weakly dimorphic, both carrying a
small basal protuberance and right-angled at the
elbow; the right clasping joint somewhat the
larger and more recurved. Penis with convex
margins (one seems broadly serrulate) and a
flattened top; several transverse muscle bands;
seminal tube broadened basally and also thickened medially.
Remarks
In size, our specimens are within and towards
the upper part ofthe range cited by Angel (1981),
viz. females 1.8-2.1 mm, males 1.6-1.9 mm. The
rectangular shape and convex posterior margin,
also the reticulation pattern of the carapace, are
other features which allow its ready recognition.
Distribution
Mtiller (1912) notes that this species occurs
widely in the Atlantic, Pacific and Indian Oceans
and the Mediterranean. For Angel (1981) it is a
mesopelagic and transoceanic taxon, ranging in
the Atlantic from 60°N to 47°S. Poulsen ( 1973,
fig. 73) shows many records around Indonesia.
Deevey (1978, 1982) adds that it ranges in the Pacific from 11 °N to 52°S, and from equatorial regions to 50°S in the Indian Ocean. In the Magellan Straits samples, it is confined to the western
part of the sampling area and is never common.
The depth range given by Hartmann (1985) is 02500 m. However, our records, which are the
most southerlyyet for this species, are from shallow to intermediate depths.
Conchoecia loricata Claus, 1894: p. 4, pl. 3 figs.
24-30- Angel, 1981: p. 558, fig. 194/56.
Conchoecia loricata typica Mtiller, 1906a: p. 95,
pl. 22 figs. 1-9.
Conchoecia loricata loricata Mtiller, 1912: pp. 80,
81.
Loricoecia loricata Poulsen, 1973: pp. 145-147,
figs. 72, 73.
Conchoecia (Loricoecia) loricata Deevey, 1978:
p. 60, fig. 15d-f - Deevey, 1982: pp. 157, 158,
fig. 30.
Carapace length -
females: 2.05 mm
males: 1.86 mm
Female. Carapace large and regularly rectanguIar; height about 1/2 the length; rostrum almost
straight; incisure open and moderately deep;
dorsal margin weakly concave below the shoulders; posterior margin convex, making a blunted
right angle with the end of the dorsal margin;
ventral margin slightly convex. Asymmetric
glands at the usual sites; lateral corner glands
present; medial glands numerous posteriorly.
Shell sculpture consists of distinct striae which
run parallel to the dorsal and posterior margins;
from the incisur they curve towards the ventral
margin, thus intersect that margin in the anteroventral region, giving a denticulate effect; a
weak cross-striation is observable anteriorly.
Cap of the long frontal organ is united with the
stern and produced distally; ornament of many
short and stiffhairs everywhere except dorsodistally. Al segments spinulose, with a dorsal bristle; the 5 end bristles comprise a long slender 'e'
bristle and 4 short sensory 'pipe' bristles.
Male. Carapace similar to that of the female but
smaller and with paired dorsomedial glands
posteriorly. Cap of the frontal organ separated
from the stern; ornament of short and rather stiff
hairs, except dorsodistally, where it is smooth.
Al 'e' bristle bearing a double row of20-22 backwards-directed 'thorns' (short spines). A2 clasping joints weakly dimorphic, both carrying a
small basal protuberance and right-angled at the
elbow; the right clasping joint somewhat the
larger and more recurved. Penis with convex
margins (one seems broadly serrulate) and a
flattened top; several transverse muscle bands;
seminal tube broadened basally and also thickened medially.
Remarks
In size, our specimens are within and towards
the upper part ofthe range cited by Angel (1981),
viz. females 1.8-2.1 mm, males 1.6-1.9 mm. The
rectangular shape and convex posterior margin,
also the reticulation pattern of the carapace, are
other features which allow its ready recognition.
Distribution
Mtiller (1912) notes that this species occurs
widely in the Atlantic, Pacific and Indian Oceans
and the Mediterranean. For Angel (1981) it is a
mesopelagic and transoceanic taxon, ranging in
the Atlantic from 60°N to 47°S. Poulsen ( 1973,
fig. 73) shows many records around Indonesia.
Deevey (1978, 1982) adds that it ranges in the Pacific from 11 °N to 52°S, and from equatorial regions to 50°S in the Indian Ocean. In the Magellan Straits samples, it is confined to the western
part of the sampling area and is never common.
The depth range given by Hartmann (1985) is 02500 m. However, our records, which are the
most southerlyyet for this species, are from shallow to intermediate depths.