Description of Xanthocalanus quasiprofundus sp. n. from the Arctic and redescription of X. obtusus and X. kurilensis from the North Pacific (Copepoda: Calanoida: Phaennidae)

N.V. Vyshkvartzeva

Abstract. The Arctic Xanthocalanus quasiprofundus sp. n. differs from X. profundus Sars, 1907 in the larger size (7.6 vs. 6.2 mm), presence of 10 teeth on masticatory edge of Md gnathobase and of spinules near bases of central teeth, 1 very enlarged brush-like seta of distal endopodal complex of Mx2, presence of 3 sensory setae on syncoxa of Mxp and of transverse row of spinules on Re1 of P4, and some details of P5 structure. Females of X. obtusus and X. kurilensis have 1 worm-like and 7 slender brush-like sensory setae differing in lenth on distal endopodal complex of Mx2. Male of 5th copepodid stage of X. kurilensis has an additional rudimentary seta, i.e. 9 elements, on distal endopodal complex of Mx2 (number primitive for Bradfordian families). Adult male of X. kurilensis has here 1 enlarged brush-like seta, 4 very slender brush-like setae and 1 rudimentary seta. The presence of 1 and 2 worm-like sensory setae on Li3 and Mx2 is noted in all 3 examined species.

Zoosystematica Rossica, 2002, 11(1): 91–103  ▪  Published in print 25 December 2002


Open full article  

Volume, Year:
Vol. 28. 2019
Vol. 27. 2018
Vol. 26. 2017
Vol. 25. 2016
Vol. 24. 2015
Vol. 23. 2014
Vol. 22. 2013
Vol. 21. 2012
Vol. 20. 2011
Vol. 19. 2010
Vol. 18. 2009
Vol. 17. 2008
Vol. 16. 2007
Vol. 15. 2006
Vol. 14. 2005
Vol. 13. 2004
Vol. 12. 2003
Vol. 11. 2002
Vol. 10. 2001
Vol. 9. 2000
Vol. 8. 1999
Vol. 7. 1998
Vol. 6. 1997
Vol. 5. 1996
Vol. 4. 1995
Vol. 3. 1994
Vol. 2. 1993
Vol. 1. 1992
Supplementa:
Suppl. 2. 2018