Hirondellea endeavour Lowry & Stoddart 2010, sp. nov.
Hirondellea endeavour sp. nov. (Figs 4–6) Type material. HOLOTYPE, female, 6.2 mm, MV J60572. PARATYPE, 1 specimen, MV J15792; 76 km south of Point Hicks, Victoria, Australia, 38°29.33'S 149°19.98'E, 1840 m, sandy mud, fine shell, WHOI epibenthic sled, 26 October 1988, G.C.B. Poore et al....
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2010
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| Online Access: | https://doi.org/10.5281/zenodo.6486125 http://treatment.plazi.org/id/03DF3D2A8A14BC1E7DD9FF35FCA4FC11 |
| Summary: | Hirondellea endeavour sp. nov. (Figs 4–6) Type material. HOLOTYPE, female, 6.2 mm, MV J60572. PARATYPE, 1 specimen, MV J15792; 76 km south of Point Hicks, Victoria, Australia, 38°29.33'S 149°19.98'E, 1840 m, sandy mud, fine shell, WHOI epibenthic sled, 26 October 1988, G.C.B. Poore et al. on RV Franklin , stn SLOPE 69. Type locality. 76 km south of Point Hicks, Victoria, Australia, 38°29.33'S 149°19.98'E, 1840 m depth. Etymology. The specific name refers to the vessel, HM Bark Endeavour , on which Lieutenant James Cook was sailing when he named the nearest point to the type locality, Point Hicks; used as a noun in apposition. Diagnosis. Head lobe broadly subtriangular. Epistome strongly produced, subtriangular with acute apex. Gnathopod 1 propodus palm transverse, straight; dactylus slightly over-reaching palm, with 1 subterminal spine on inner margin. Gnathopod 2 minutely subchelate; propodus length 2.2 × breadth. Epimeron 1 anteroventral corner rounded. Epimeron 3 posteroventral corner produced into large spine. Uropod 2 inner ramus not incised. Uropod 3 outer ramus article 2 long, 0.6 × article 1. Telson length 1.2 × breadth, cleft 38 %. Remarks. Hirondellea endeavour is the only known Australian species with a transverse palm on gnathopod 1. However, H. abyssalis , H. antarctica , H. brevicaudata and H. guyoti all have transverse palms. Hirondellea endeavour shares a non-constricted uropod 2 inner ramus and a medium cleft telson with H. abyssalis and H. brevicaudata . It differs from both of these species in the posteroventral corner of epimeron 3 which is developed into a large spine. Distribution. South-eastern Australia in 1840 m depth. Published as part of Lowry, J. K. & Stoddart, H. E., 2010, The deep-sea scavenging genus Hirondellea (Crustacea: Amphipoda: Lysianassoidea: Hirondelleidae fam. nov.) in Australian waters, pp. 37-55 in Zootaxa 2329 (1) on page 43, DOI:10.11646/zootaxa.2329.1.3, http://zenodo.org/record/10093641 |
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