Gammarus pretzmanni Mateus & Mateus, 1990

Zamanpoore, Mehrdad, Grabowski, Michal, Poeckl, Manfred & Schiemer, Friedrich, 2011, Taxonomic review of freshwater Gammarus (Crustacea: Amphipoda) from Iran, Zootaxa 3140, pp. 1-14 : 8-9

Gammarus pretzmanni Mateus & Mateus, 1990

Gammarus pretzmanni Mateus & Mateus, 1990: 286 –289, Figs. 2–2a;

G. projectus Stock, Mirzajani, Vonk, Naderi & Kiabi, 1998: 201 –205, Figs. 17–20; Khalaji-Pirbalouty & Sari, 2004: 2428 – 2429; Ebrahimnezhad, Hosseini & Sari, 2005: 223, Fig. 3, new synonym.

Locus typicus. 43 km W of Arak (34˚02ʹN, 49˚22ʹE), Markazi Province. Material examined. Holotype and paratypes, Markazi Province (34˚02ʹN, 49˚22ʹE) ( NHMW Amphipoda 4871).

Holotype and paratypes of G. projectus Sarabe Abbasabad, Shahzand , Markazi Province (33˚55ʹN, 49˚30ʹE) ( ZMA Crust. Amph. 201376).

Distribution. This species was reported from the inside and from eastern outskirts of upper and central Zagros mountains, in different localities ( Mateus & Mateus, 1990; Stock et al., 1998; Khalaji-Pirbalouty & Sari, 2004; Ebrahimnezhad et al., 2005) ( Fig. 1 ).

Ecological notes. No ecological data is available.

Taxonomic remarks. Originally described by Mateus and Mateus (1990), this taxon was overlooked by most amphipod researchers, even the publication itself was not mentioned in any of the subsequent studies upon gammarids. Examined type material of this species was absolutely identical to that of G. projectus . Thus, Gammarus projectus is a junior synonym of G. pretzmanni . Loci typici of both species are localities on the same river, very close to each other, what makes our statement even more obvious.

This species is very close to G. komareki and G. parthicus , but the state of highly curled setae on dorsal and ventral of antenna 2 ( Mateus & Mateus, 1990, Fig. 2c) characterizes it among other species. See also Taxonomic remarks on G. p a r t h i c u s and G. komareki .

Figures

FIGURE 1. Distribution map of freshwater Gammarus species in Iran (grey regions indicate high mountainous areas).