Gammarus gonensis, Özbek & Online & Version, 2016

Özbek, Murat, Online, Published & Version, Final, 2016, Epigean amphipod fauna of Gönen Stream (western Anatolia, Turkey), with the description of Gammarus gonensis sp. nov., Turkish Journal of Zoology 40 (3), pp. 336-344 : 337

Gammarus gonensis sp. nov. ( Figures 2–7 )

Material examined: Holotype male, 11.4 mm ( ESFM-MALI/12-01 ), collected with a fine-mesh hand-net in Gönen Stream , Balıkesir Province, northwestern Anatolia (39°48′32″N, 27°14′12″E), 22.vi.2011 . – Paratypes: allotype female, 9.0 mm ( ESFM-MALI/12-02 ) , same data as holotype. Many males and females ( ESFM-MALI/12-03 ) , same data as holotype. All specimens were fixed in 70% ethanol in the field. The material is deposited in the Museum of the Faculty of Fisheries, Ege University, İzmir, Turkey ( ESFM) .

Diagnosis: A medium-large species. Similar to G. uludagi G. Karaman, 1975 except for having many long setae along the anterior margins of pereopods 5–7 in both sexes, having longer antenna 1, and having less setose peduncular segments of antenna 2.

Figures

Figure 2. Habitus of Gammarus gonensis sp. nov. Holotype male.

Figure 3. Gammarus gonensis sp. nov. Holotype male. A, maxilla 2; B, left maxilla; C, right maxilla 1; D, lower lip 2; E, upper lip; F, maxilliped; G, left mandible; H, right mandible; I, antenna 2; J, antenna 1; K, uropod 3; L, telson; M, epimeral plates.

Figure 4. Gammarus gonensis sp. nov. Holotype male. A, gnathopod 1; B, gnathopod 2; C, palm of gnathopod 2 (inner side); D, palm of gnathopod 1 (inner side); E, pereopod 3; F, pereopod 4.

Figure 5. Gammarus gonensis sp.nov.Holotype male.A, pereopod5; B, pereopod6; C, pereopod 7; D, uropod 1; E, uropod 2.

Figure 6. Gammarus gonensis sp. nov. Allotype female. A, uropod 3; B, gnathopod 1; C, telson; D, epimeral plates; E, antenna 1; F, antenna 2; G, gnathopod 2.

Figure 7. Gammarus gonensis sp. nov. Allotype female. A, pereopod 3; B, pereopod 4; C, pereopod 5; D, pereopod 7; E, pereopod 6.