Paraeuchaeta barbata   (Brady,  1883) (Copepod)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Arthropoda
Class: Maxillopoda
Order:Calanoida
Family:Euchaetidae

Image copyrights: Hopcroft/ NOAA

Description
Size (female): length 7.25-8.4 mm.

The proportional lengths of the cephalothorax and abdomen are as 79 to 34.
The rostrum projects well forwards and immediately above it is a small supra-rostral eminence. The posterior thoracic margin on the right side is sharply rounded, but on the left side the margin in the ventro-lateral region is brought to a very small point. On both sides there is the usual tuft of long hair.

The 2nd and 3rd abdominal segments are armed dorsally with a row of spines and on the 3rd segment a few of the central spines are enlarged to about twice the size of the others. The ventral aspect of the 2nd and 3rd abdominal segments are devoid of hair but the 4th segment carries a tuft of long hairs.

The 1st antenna reaches to just beyond the posterior thoracic margin.
In the 1st pair of swimming leg, the 1st and 2nd segments of the exopod are incompletely demarcated and there is a minute external spine, arising from the bottom of the concavity in the external margin; the marginal spine, arising from that portion of the proximal joint that corresponds to segment 2, is long and seta-like and reaches to the base of the marginal spine on the distal segment.

In the 2ng leg, the external spine on the 2nd segment of the exopod is long and reaches to a point half-way along the proximal spine of the 3rd segment. The proximal spine on the 3rd segment is also longer than in certain other forms and very nearly reaches to the base of the 2nd spine. The 2nd spine is also long, it may reach very nearly, if not actually, to the extreme distal margin of the segment. The sinus at the base of the 2nd marginal spine is deep and reaches as far as a line drawn between the base of the proximal spine and the point of origin of the 2nd seta on the internal margin.



Synonym (s)
Euchaeta barbata T. Scott, 1893
Euchaeta barbata Wolfenden, 1904
Euchaeta barbata Sars, 1903
Euchaeta barbata A. Scott, 1909
Euchaeta barbata Farran, 1909
Paraeuchaeta barbata Sewell, 1913

Common Name (s)
Economic Importance and Threats

Ecology

Biogeography


• Bay of Bengal INDIA (Record: 21/10/1911)

Literature Source(s)
  • Sewell, RBS (1999) The copepoda of Indian seas Biotech Books, Delhi, India 407 pp Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Arctic Ocean Diversity Available at - http://www.arcodiv.org/

Page last updated on:2011-03-14

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