3.10 Hyperoche mediterranea Senna, 1908
Hyperoche mediterranea Senna, 1908: p. 159 -
Barnard, 1930: p. 415 (key)- Hurley, 1955: p. 147,
figs. 115-132.
Body length -
female: 4.7 mm (1 specimen)
Female. Left mandible with incisor consisting in
a narrow scalpel-shaped process with serrated
margins. Molar process with a wide, triangular
blade projecting inwards. Between the two is a
small, finely setous, subtriangular process in
correspondence to the row of spines. Palp long,
three-segmented; 3rd segment covered with fine
setules. Inner lobe of 1st maxilla encircled by setae; ovallamellar outer plate, with inner margin
bearing few setules and minute teeth on distal
extremity. Inner lobe of 2nd maxilla pointed and
covered with fine setules; outer lobe similar to a
thin, setous palp. Maxilliped with thin median,
finely setous process extending almost to half
outer lanceolated plate. This plate bears slightly
setous inner margin and pointed apices. lst and
2nd gnathopods with posterior margins of
merus and carpus prolonged into sharp processes. Basis, ischium, merus, carpus and propodus
bearing fine spinulation along posterior margins
and nearby areas. 3rd pereopod with carpus
ending in pointed postero-distal angle. Epimeral
plates with largely rounded postero-distal corner.
Remarks
The species can be easily distinguished from the
congeneric species H. medusarum by the lanceolated form of the outer plates of the maxilliped that terminate in acute apices and the
rounded edges of the epimeral plates. In H. medusarum, the outer plates of the maxilliped are
rounded at the apex and the epimeral plates bear
postero-distal corners terminating with a small
point.
Distribution
Dick (1970) considers the species as relatively
rare in temperate regions and reports that it is
distributed in the SE temperate Atlantic and Pacific Oceans, as well as the Mediterranean Sea.
In the Straits of Magellan, it was sampled only in
surface waters at St. 5 situated at the mouth of
the Pacific entrance.
Hyperoche mediterranea Senna, 1908: p. 159 -
Barnard, 1930: p. 415 (key)- Hurley, 1955: p. 147,
figs. 115-132.
Body length -
female: 4.7 mm (1 specimen)
Female. Left mandible with incisor consisting in
a narrow scalpel-shaped process with serrated
margins. Molar process with a wide, triangular
blade projecting inwards. Between the two is a
small, finely setous, subtriangular process in
correspondence to the row of spines. Palp long,
three-segmented; 3rd segment covered with fine
setules. Inner lobe of 1st maxilla encircled by setae; ovallamellar outer plate, with inner margin
bearing few setules and minute teeth on distal
extremity. Inner lobe of 2nd maxilla pointed and
covered with fine setules; outer lobe similar to a
thin, setous palp. Maxilliped with thin median,
finely setous process extending almost to half
outer lanceolated plate. This plate bears slightly
setous inner margin and pointed apices. lst and
2nd gnathopods with posterior margins of
merus and carpus prolonged into sharp processes. Basis, ischium, merus, carpus and propodus
bearing fine spinulation along posterior margins
and nearby areas. 3rd pereopod with carpus
ending in pointed postero-distal angle. Epimeral
plates with largely rounded postero-distal corner.
Remarks
The species can be easily distinguished from the
congeneric species H. medusarum by the lanceolated form of the outer plates of the maxilliped that terminate in acute apices and the
rounded edges of the epimeral plates. In H. medusarum, the outer plates of the maxilliped are
rounded at the apex and the epimeral plates bear
postero-distal corners terminating with a small
point.
Distribution
Dick (1970) considers the species as relatively
rare in temperate regions and reports that it is
distributed in the SE temperate Atlantic and Pacific Oceans, as well as the Mediterranean Sea.
In the Straits of Magellan, it was sampled only in
surface waters at St. 5 situated at the mouth of
the Pacific entrance.