Diamysis mesohalobia subsp. heterandra Ariani & Wittmann 2000

Autor: Wittmann, Karl J., Ariani, Antonio P., Daneliya, Mikhail
Rok vydání: 2016
Předmět:
DOI: 10.5281/zenodo.6088666
Popis: Diamysis mesohalobia heterandra Ariani & Wittmann, 2000 Fig. 15 K���S Mysis oculata var. relicta: Zimmer 1927 (partim: Lake Deran). Diamysis bahirensis: Holmquist 1955; Avĉin et al. 1973 (partim); Matja��ič & ��tirn 1975 (partim); Ariani et al. 1983, 1993 (partim). Diamysis bahirensis ssp.: Ariani 1981b (partim). Diamysis sp.: Wittmann & Stagl 1996 (partim). Diamysis mesohalobia heterandra Ariani & Wittmann, 2000: 2004, 2005; Anderson 2008; San Vicente 2010; Wittmann & Ariani 2010, 2012a, 2012b; Mees 2014. Material examined. 42 samples from oligohaline to metahaline lagoons and karstic springs in diverse parts of the eastern Mediterranean plus 13 samples from freshwater tributaries of the Adriatic Sea, see Ariani & Wittmann (2000) and Wittmann & Ariani (2012b); material studied by Holmquist (1955), previously unpublished reexamination: dissected parts of 1 M ad. 8 mm, 2 egged F ad. with body length 7 or 9 mm, respectively, on a total of 3 slides labelled " Diamysis biharensis. Herzegovina & Timavo, det. Ch. Holmquist, prep. 57���59", SMNH reg. nos. 140108 ��� 140110. According to Holmquist (1955) this material was collected by Janez Hoenigman in Lake Deran, 2���5 m depth, 27 Apr. 1954, 43.04N 017.75E, Herzegovina, altitude 0 m, sea distance 31 km as calculated along the small effluent and following this along the Neretva River to the east coast of the Adriatic Sea. Short updated description. The following data covers primarily the type population in an oligo- to mixoeuhaline lagoon with brackish spring, Limni Antinioti (Island of Corfu, Ionian Sea). Data from remaining populations, as far as different, are given in square brackets. Diamysis mesohalobia with short rostrum mostly forming a wide convex angle with broadly rounded tip (Fig. 15 K, L). Fenestra paracornealis weakly developed, mostly visible (Fig. 15 K) in well preserved material [mostly visible in well preserved material from Lake Deran (near E-Adriatic coast) or rarely from Schiavetti Springs (Gulf of Trieste, N-Adriatic)]. Carapace of adult males with fringes arranged in two submedian stripes plus one subterminal stripe (Fig. 15 K, L). The submedian stripes may be differentiated as two separate stripes each (Fig. 15 K). Palpus of maxilla with subcircular terminal segment, armed with 8���27 denticles along distal margin. Basal segment of all thoracic exopods normally with spiniform outer corner, rounded only in some of the posterior exopods of small individuals ( 6 mm) often with a minute additional seta; basal segment subterminally with a smooth seta (Fig. 15 N���P). Large males (> 7 mm) with 0���1 [0���4] additional small barbed [and/or smooth] seta (Fig. 15 N, P) on terminal margin of basal segment of exopod. Scutellum paracaudale subtriangular, mostly biconvex [or with upper margin convex and lower margin concave]; tip pointed (Fig. 15 Q, R) or less frequently rounded, rarely bifid. These margins mainly smooth in small specimens [or undulate in large ones (> 8 mm; Fig. 15 Q)]. Telson mostly subquadrangular (Fig. 15 S), but subtriangular in small specimens (Body length. Adult females 3.7���9.7 mm, males 3.0��� 8.7 mm. Distribution (Figs 12, 16). In fresh and brackish waters of springs, estuaries, lagoons, and lakes all around the Adriatic Sea (Fig. 12), salinity range S = 0���42. Outside the Adriatic (Fig. 16) known only from oligo- to polyhaline waters on the coasts of the Ionian and Marmora Seas, so far not from fresh-water (Ariani & Wittmann 2000, Wittmann & Ariani 2012a, b).
Published as part of 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, pp. 1-70 in Zootaxa 4142 (1) on pages 33-36, DOI: 10.11646/zootaxa.4142.1.1, http://zenodo.org/record/261102
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Databáze: OpenAIRE
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