Lycaea osbornae Zeidler 2021, sp. nov.

• Main Author: Zeidler, Wolfgang
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Lycaeidae; Lycaea; Lycaea osbornae; Indian; Pacific; North Atlantic
• Online Access: https://zenodo.org/record/5770325; https://doi.org/10.5281/zenodo.5770325

Lycaea osbornae sp. nov. (Figs 10–11) Material examined. Holotype: Female, 4.7 mm, USNM 1242790. North Atlantic, Georges Bank, S. of Massachusetts [39°26’N 68°03’30”W], R/VAlbatross, surface, 31 August 1885. Allotype: Male, 5.2 mm (recently moulted), NHMD-228125, Dana stn. 3563 iv, S.E. Pacific, N.E. of Marquesas Is. [07°45.5’S 131°22’W], 100 mw, 29 September 1928. Paratypes 1: 1 female, 3.7 mm, USNM 1242790, collected with holotype. 2 : 1 female, 3.3 mm, SAMA C12577, N.E. Pacific, off Vancouver Island [49°15.09’N 126°40’W], “LaPerouse and Line P Monitoring Program”, stn. A 4, 250 m, September 2009 (from M. Galbraith). On the salp Cyclosalpa bakeri Ritter, 1905. 3 : 1 female 5.8 mm, NHMD-619242, collected with allotype. 4 : 1 female, 4.4 mm, NHMD-228132, Dana stn. 3843 iv, S.E. Indian Ocean, N. of Cocos / Keeling Is. [09°59’S 97°56’E], 200 mw, 9 October 1929. 5 : 2 females, 6.1 and 6.5 mm, NHMD- 228242, Dana stn. 1208 iii, N.E. Pacific, off Panama [06°48’N 80°33’W], 300 mw, 16 January 1922. 6 : 2 males about 8.6 mm, NHMD-228248, Dana stn. 3563 v, same data as allotype but 50 mw. Description of holotype. Female, 4.7 mm. Head relatively large, rounded, much deeper than long (about 1.7 x), as long as first 3 pereonites combined. Buccal mass protruded well below head. G1 and G2 sub-chelate, G1 slightly shorter than G2. G1 with slightly inflated basis; carpus rectangular with small, pointed, postero-distal tooth, reaching to about the middle of the propodus; propodus with small, slightly serrated, postero-distal corner produced very slightly posteriorly to dactylus; dactylus slender, relatively long, length 0.5 x propodus. G2 similar to G1 except for basis which is more slender and longer (1.5 x that of G1) accounting for the extra length. P3–6 with very short, stubby dactylus, those of P3 and P4 about 0.2 x as long as propodus, or slightly more. P3 and P4 morphologically similar, P4 slightly longer than P3; merus marginally inflated anteriorly, marginally longer than propodus, about 0.5 x basis; carpus marginally ...