“Parribacus perlatus new species
Types. —Holotype is a female (carapace length 53 mm) collected at Easter Island on 19 January 1965 by the 1964-1965 Medical Expedition (Sta. F. 90), it is now preserved in the collection of the Rijksmuseum van Natuurlijke Historie, Leiden under Reg. No. Crust. D. 21257. There are four paratypes: a male (cl. 40 mm) and a female (cl. 43 mm) were collected at Anakena, Easter Island on 30 December 1964 by the same expedition (coll. Rijksmuseum van Natuurlijke Historie, Reg. No. Crust. D. 21240), and two females (cl. 44 and 48 mm) were taken at La Perouse Bay, Easter Island, on 16 March 1956 by the 1955-1956 Thor Heyerdahl Expedition. The last two specimens could be examined through the courtesy of the Zoological Museum at Oslo, Norway, where they are housed.
Description. — The new species is closest to Parribacus scarlatinus Holthuis and P. caledonicus Holthuis. Like those species it has a distinct dorsal rostral tooth. The transverse groove, which separates the anterior from the posterior part of the second to fifth abdominal somites, is narrow and entirely filled with short hairs and tubercles. The median dorsal carina of the second to fifth abdominal somites is low and practically flush with the rest of the surface, only in the second and third somites the anterior part of the carina is elevated and acute in lateral view. The
transverse grooves on the posterior part of the somites are entirely covered by the fringes of hair implanted around the tubercles. The reddish spots on the anterior part of the first abdominal somite are about 8 to 10 in number; they are of irregular outline and sometimes fused with each other. They are not sharply delimited as in P. holthuisi Forest.
With P. caledonicus the new species agrees in having tubercles, be it flattened ones, on the anterior part of the abdominal somites ; the posterior of these tubercles are large and give the posterior margin of that part of the somite a crenulated appearance. Also the legs are rather short like in P. caledonicus. P. perlatus differs from that species, however, in having only 6 teeth on the outer margin of the fourth segment of the antenna (not including the apex).
P. perlatus agrees with P. scarlatinus in the number of teeth on the outer margin of the fourth antennal segment, but differs in the less slender teeth of the ultimate antennal segment, and the more robust legs.
The carapace of the new species is far rougher than in either of the two other species, the squamiform tubercles are not rounded and appressed, but more pointed and more erect. The sternum shows at the posterior margin of the sternites of the second and third pereiopods a distinct pearly tubercle. These tubercles are far more conspicuous than in other species of the genus. The dorsal surface of the body is brownish red to red in colour, with paler spots. This colour too is characteristic of the species.”
(Holthuis, 1967)
Parribacus perlatus, the Easter Island mitten lobster, is a species of slipper lobster found around Easter Island in the Pacific Ocean. The lobster is a traditional food source for the Rapanui where it is known as rape-rape.[2]
Adults of Panulirus pascuensis can grow to a total length of 11 centimetres (4 in), with a carapace 4–5 cm (1.6–2.0 in) long.[3]
Panulirus pascuensis is native to the coast of Easter Island in the south eastern Pacific Ocean. It is found on rocky shores in shallow waters at depths of up to 2–18 metres (6 ft 7 in – 59 ft 1 in), hiding during the day under boulders and in crevices.[1]
Parribacus perlatus, the Easter Island mitten lobster, is a species of slipper lobster found around Easter Island in the Pacific Ocean. The lobster is a traditional food source for the Rapanui where it is known as rape-rape.
Parribacus perlatus is een tienpotigensoort uit de familie van de Scyllaridae.[2] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1967 door Holthuis.
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