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Deep-Water Crustacea of the Genus Sergestes (Decapoda, Natantia) from Cook Strait, New Zealand

Subgenus Sergia Stimpson, 1860

Subgenus Sergia Stimpson, 1860

  • 1860. Sergia Stimpson, Proc. Acad. Nat. Sci. Philad. 1860: 46.
  • 1940. Sergia Burkenroad, Ann. Mag. Nat. Hist. ser. 11, VI: 43.
  • 1945. Sergia Burkenroad, Trans. Conn. Acad. Arts Sci. 36: 587 footnote 11.
  • 1955. Sergia Dennell, Jour. Linn. Soc. London Zool. XLII: 399.

Species of Sergestes s.l. without specialised luminescent modifications of the gastrohepatic gland (organs of Pesta). With or without dermal photophores, which when present may or may not have cuticular lenses. Supraorbital and hepatic spines absent in adult (secondary hepatic prominences may sometimes be present). Ovary may extend into the abdomen. Adult with red cuticular pigment distributed over entire body and appendages in life.

The type species of the subgenus is Sergia remipes Stimpson, 1860. This is a late mastigopus stage which Burkenroad claims (1945) to have identified with this group of the genus Sergestes.

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Synopsis of the Subgenus Sergia

1 (4) Dermal photophores (lens-bearing or lens-less) present on body and appendages.
2 (3) Photophores of the lens-bearing type The "S. challengeri" group. S. prehensilis Bate, 1881 (syn. S. gloriosus Stebbing); S. challengeri Hansen, 1903; S. fulgens Hansen, 1919; S. lucens Hansen, 1922; S. talismani Barnard, 1947 (nov. nom. for S. splendens Hansen); S. scintillans Burkenroad, 1940, and S. stellatus Burkenroad, 1940.
3 (2) Photophores of the lens-less"opaque spot" type The "S. robustus" group. S. robustus Smith. 1882; S. bisulcatus Wood-Mason, 1891; S. phorcus Faxon, 1893; S. gardineri Kemp, 1913; S. splendens Sund, 1920 (syn. S. richardi Hansen, S. crassus Hansen); S. grandis Sund, 1920; S. plumeus Illig, 1927; S. regalis Gordon, 1939; S. creber Burkenroad, 1940; S. extenuatus Burkenroad, 1940; S. maxim us Burkenroad, 1940; S. potens Burkenroad, 1940; S. bigemmeus Burkenroad, 1940; S. inequalis Burkenroad, 1940, and S. filictum Burkenroad. 1940.
4 (1) No dermal photophores present on body or appendages. Integument membraneous The "S. japonicus" group. S. tenuiremis Kröyer, 1855; S. japonicus Bate, 1881 (syn. S. mollis Smith); S. kröyeri Bate, 1881 (syn. S. tropicus Sund); S. profundus Bate, 1888; S. inous Faxon, 1893 and S. laminatus Burkenroad, 1940.
Incertae sedis S. colosii Cecchini, 1933 (description not seen), and S. (Sergestes) sundi Dennell, 1955 (nomen nudum apparently an unpublished name supplied by Burkenroad, see p. 393).