Gammarus lobifer Stock, Mirzajani, Vonk, Naderi & Kiabi, 1998

Zamanpoore, Mehrdad, Grabowski, Michal, Poeckl, Manfred & Schiemer, Friedrich, 2011, Taxonomic review of freshwater Gammarus (Crustacea: Amphipoda) from Iran, Zootaxa 3140, pp. 1-14 : 6

Gammarus lobifer Stock, Mirzajani, Vonk, Naderi & Kiabi, 1998

Gammarus lobifer Stock, Mirzajani, Vonk, Naderi & Kiabi, 1998: 210 –215, Figs. 24–27.

Locus typicus. Yasooj, (30º40'N, 51º30'E), Zagros Region, Kohgiluye Va Buierahmad Province.

Material examined. Specimens from Sheshpeer spring, (30º15'N, 52º03'E) ( ZMA Crust. Amph. 202031).

Distribution. This species seems to be endemic to a limited area in lower central Zagros, in three locations including locus typicus and two other in north-west and south-east of it ( Fig. 1 ).

Ecological notes. The original description lacks any ecological data. However, the locality lies in a mountainous region with hundreds of cold springs.

Taxonomic remarks. Individuals from the Sheshpeer spring possess all the described features of the typus except for the postero-distal corner setae on pereopod 7 basis. Among Iranian gammarids this species is most close to G. baloutchi and G. sepidannus , however G. lobifer bears short setae in peduncle segments 4 and 5 of antenna 2 ( Stock et al., 1998, Fig. 24d), versus long setae in the two other species. Dorsal surface of urosomites in G. lobifer is slightly elevated (ibid., Fig. 24i) compared to flat urosome surface in both G. baloutchi and G. sepidannus . In addition, antennal gland cone is long in G. lobifer , while it is short in G. b a l o u t c h i.

Figures

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