Diamysis lagunaris Ariani & Wittmann, 2000

Wittmann, Karl J., Ariani, Antonio P. & Daneliya, Mikhail, 2016, The Mysidae (Crustacea: Peracarida: Mysida) in fresh and oligohaline waters of the Mediterranean. Taxonomy, biogeography, and bioinvasion, Zootaxa 4142 (1), pp. 1-70 : 36-38

publication ID

https://doi.org/ 10.11646/zootaxa.4142.1.1

publication LSID

lsid:zoobank.org:pub:FA423164-276C-44B0-A417-8E97AC3DF0AA

DOI

https://doi.org/10.5281/zenodo.6088669

persistent identifier

https://treatment.plazi.org/id/03B9BA4E-182B-FFF9-CAF6-FD34FBC244E7

treatment provided by

Plazi

scientific name

Diamysis lagunaris Ariani & Wittmann, 2000
status

 

Diamysis lagunaris Ariani & Wittmann, 2000 View in CoL

Fig. 17 View FIGURE 17 A–J

Mysis bahirensis G. O. Sars, 1877 (partim: material from La Spezia): Gourret 1897; Sudry 1910.

Diamysis bahirensis: Băcescu 1941 View in CoL ; Genovese 1956; Drake et al. 1997; Cunha et al. 2000; San Vicente & Munilla 2000; Goulletquer et al. 2002; Munilla & San Vicente 2005.

Diamysis bahirensis View in CoL ssp.: Ariani 1979 (partim: material from Lake Ganzirri).

Diamysis sp. B: Wittmann 1999.

Diamysis sp.: Wittmann & Ariani 2000.

Diamysis lagunaris Ariani & Wittmann, 2000: 2004, 2005 View in CoL ; Ariani 2004; Anderson 2008; Petrescu & Wittmann 2009; Petryashov 2009; Wittmann & Ariani 2009, 2010, 2012a; San Vicente 2010; ITIS 2014 ; Mees 2014; Wittmann et al. 2014.

Material examined. Two samples from marine waters of the eastern Mediterranean , 32 samples from brackish and marine waters of the western Mediterranean , plus 3 from the E-Atlantic ( Portugal): see Ariani & Wittmann (2000), Wittmann & Ariani (2012a). Among these 37 positive samples only one from the oligohaline reach (S = 3.4): 1 M subad. 4.7 mm from the Mediterranean coast of France, Canal d'Arles à Fos, 43.4663N 004.8338E GoogleMaps ; previously unpublished sample: 2 M ad. 5.4–5.6 mm, 1 F ad. 6.7 mm, among ~30,000 Mesopodopsis slabberi and 2 Limnomysis benedeni , Mediterranean coast of France, estuary of the Petit Rhône at Tiki, same sample as indicated above for M. slabberi , NHMW reg. no. 25707.

Diagnosis (sensu lato: covering the known population range). Eyes normal, eyestalks dorsally with welldeveloped fenestra paracornealis ( Fig. 17 View FIGURE 17 B), although not well visible in poorly pigmented eyestalks. Rostrum forms a wide convex angle with broadly rounded tip ( Fig. 17 View FIGURE 17 A, B). Carapace without fringes in both sexes ( Fig. 17 View FIGURE 17 A). Palpus of maxilla with distal segment subcircular, armed with 5–25 distinct denticles. Pereiopods of moderate length, eighth endopod extending to the maxillae or at most up to mandibles. All pereiopods with normal carpopropodus and slender, styliform claw ( Fig. 17 View FIGURE 17 D). Basal segment of thoracic exopods with outer corner spiniform ( Fig. 17 View FIGURE 17 C) or occasionally rounded in some of the posterior exopods, most often rounded in last exopod. Pereiopods poorly to markedly slender, with R6 = 4.8–8.1 ( Fig. 17 View FIGURE 17 D). Carpopropodus of thoracic endopods 3–8 with 3–2 (4), 2–3, 2, 2, 2, and 2–3 segments, respectively; tarsus slender, with slender, in part feebly serrated claw; carpopropodus 3 longer than 5 times its maximum width ( Fig. 17 View FIGURE 17 D). Exopod of fourth male pleopod 2-segmented with a large modified seta and often an additional minute seta at tip; basal segment with smooth seta and one (0–2) additional, small, barbed seta; endopod with distinct subbasal articulation ( Fig. 17 View FIGURE 17 E). Scutellum paracaudale terminally well rounded or biconvex with rounded (rarely acute) apex ( Fig. 17 View FIGURE 17 F–H), its lower margin occasionally almost straight. Endopod of uropod with one strong spine below statocyst, statolith composed of vaterite. Telson ( Fig. 17 View FIGURE 17 J) subquadrangular to subtriangular, length 1.1–1.5 its maximum width or 0.7–1.0 times length of last abdominal somite; maximum width near basis 2.1–2.7 times that at apex; each lateral margin armed with 6–16 spines. Apical cleft 11–19% telson length, cleft lined by 9–23 laminae, its margins straight to convex.

Body length. Adult females 4.1–8.1 mm, males 3.6–6.6 mm.

Distribution ( Fig. 6 View FIGURE 6 ). Mainly in the western Mediterranean: along the coasts of the Tyrrhenian, Sardinian and Ligurian Seas, Golfe du Lion, Strait of Messina; rare in the eastern Mediterranean: Island of Crete in the Aegean Sea. The populations at the Atlantic coasts of southern Spain and Portugal may have originated from Mediterranean lagoons by transfer in ballast water ( Cunha et al. 2000: as D. bahirensis ), although an indigenous status of the Atlantic populations is not excluded ( Wittmann & Ariani 2012a). Type locality is the mixoeuhaline to weakly metahaline lagoon Lago di Caprolace at the Lazio coast, Tyrrhenian Sea. The species is mostly found in mixoeuhaline to metahaline lagoons, also in marine coastal habitats as well as mesohaline to mixoeuhaline reaches of estuaries. Normal salinity range 14–49; so far only two positive samples from the oligohaline reach (S = 2–3), taken at different stations in the Rhône Delta on the Mediterranean coast of France.

NHMW

Naturhistorisches Museum, Wien

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Mysida

Family

Mysidae

Genus

Diamysis

Loc

Diamysis lagunaris Ariani & Wittmann, 2000

Wittmann, Karl J., Ariani, Antonio P. & Daneliya, Mikhail 2016
2016
Loc

Diamysis lagunaris

Ariani & Wittmann 2000: 2004
2000
Loc

Diamysis bahirensis: Băcescu 1941

Bacescu 1941
1941
Loc

Mysis bahirensis

G. O. Sars 1877
1877
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