Adaugammarus kasiani Sidorov, 2018

Sidorov, Dmitry, Taylor, Steven J., Sharina, Svetlana & Gontcharov, Andrey, 2018, Zenkevitchiidae fam. nov. (Crustacea: Gammaroidea), with description of new subterranean amphipods from extremely deep cave habitats, Journal of Natural History (J. Nat. Hist.) 52 (23 - 24), pp. 1509-1535 : 1518

Adaugammarus kasiani Sidorov sp. nov.

( Figures 2a , 4a , 5-8 )

Material examined

Holotype specimen ( X47640 /Cr-2236- FEFU), adult male, ~17.0 mm, Krubera Cave (sampling depth – 1697 m, Non-Kujbyshevskaja Series), Arabika massif, Orto-Balagan valley , Gagra District , Western Caucasus, Abkhazia, 22 August 2015, coll. Y. Sophinija, G. Samokhin.

Figures

Figure 2. Outline map of the Krubera Cave profile, showing position of the sampling sites and relative sizes of amphipods. Altered and adapted from Klimchouk (2012). (a) Adaugammarus kasiani sp. nov.; (b) Kruberia abchasica; (c) Kruberia relicta sp. nov.; (d) to provide a sense of scale, a silhouette of the world’s tallest building at 828 m (Burj Khalifa, Dubai, United Arab Emirates).

Figure 4. Habitus of examined specimens: (a) Adaugammarus kasiani sp. nov., holotype X47640/Cr-2236- FEFU, male, 17.0 mm; (b) Kruberia relicta sp. nov., holotype X45485/Cr-1829-FEFU, female, 28.0 mm.

Figure 5. Adaugammarus kasiani sp. nov., holotype X47640/Cr-2236-FEFU, male, 17.0 mm: (a) antenna I; (b) antenna II; (c) left mandible; (d) right mandible; (e) third segment of palp, ventral view; (f) maxilla II; (g) maxilla I; (h) palp of left maxilla I; (i) upper lip; (j) lower lip; (k) maxilliped. Scale bars = 0.2 mm.

Figure 6. Adaugammarus kasiani sp. nov., holotype X47640/Cr-2236-FEFU, male, 17.0 mm: (a) gnathopod I; (b) gnathopod II. Scale bar = 0.4 mm.

Figure 7. Adaugammarus kasiani sp. nov., holotype X47640/Cr-2236-FEFU, male, 17.0 mm: (a) pereopod III; (b) pereopod IV; (c) pereopod V; (d) pereopod VI; (e) pereopod VII. Scale bar = 0.4 mm.

Figure 8. Adaugammarus kasiani sp. nov., holotype X47640/Cr-2236-FEFU, male, 17.0 mm: (a) epimeral plates I–III; (b) pleopod I; (c) uropod I; (d) uropod II; (e) uropod III; (f) telson; (g) second segment of urosome, dorsal view. Scale bar = 0.2 mm.