Antarctic and Subantarctic Pycnogonida: Ammotheidae and - download pdf or read online

By C. Allan Child

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Published by means of the yankee Geophysical Union as a part of the Antarctic learn Series.

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L e g s w i t h longitudinal bands o f tiny spinules, second tibia the longest segment. H e e l w i t h o n e short, 2 long spines, s o l e w i t h r o w o f stout short spines. Remarks. This species is characterized b y its massively inflated proboscis w h i c h is almost as long as the trunk, although neither the trunk nor the pro­ b o s c i s are very large in measurements. T h e presence o f a gland w i t h pore o n the palp fourth segment is unique among the Antarctic species o f this genus although not unique among Antarctic p y c n o g o n i d s ( e .

T h e spines are arranged, counting from proximal to distal, as t w o moderately short spines, followed by o n e spine t w i c e as l o n g , and another shorter spine distal to the large spine, with very short tiny spines mixed between and proximal to the major spines. This arrangement is probably closest to the anterior four propodi o f Ammothea spinosa, but this is o n e o f the species w i t h differing propodi o n the anterior and posterior four leg pairs, and it has many other differ­ ences, including the very short auxiliary claws w h i c h are not in agreement w i t h this n e w species.

D A G (one specimen). Eastwind: E W 6 6 - 0 3 3 (one male), E W 6 6 - 0 3 6 (one female, o n e j u v e n i l e ) . Eltanin: 6 - 4 1 6 ( t w o specimens), 6 - 4 1 8 (two speci­ m e n s ) , 6 - 4 3 9 (one male), 1 2 - 1 0 0 2 (one specimen), 121003 (six specimens), 2 2 - 1 5 8 1 ( 2 2 specimens), 2 7 1 8 7 0 (one specimen), 3 2 - 1 9 9 6 (one specimen), 3 2 2 0 7 0 ( o n e specimen). Islas Orcadas: 5 7 5 - 6 6 (one specimen), 5 7 5 - 6 7 (one specimen), 5 7 5 - 7 0 (two specimens), 5 7 5 - 7 3 (three specimens), 5 7 5 - 7 4 (one specimen), 5 7 5 - 7 8 (three specimens), 5 7 5 - 8 1 (one specimen), 5 7 5 - 8 3 (one specimen), 5 7 5 - 9 5 (one specimen), 5 7 5 - 9 7 (two specimens), 8 7 6 - 1 1 2 (one specimen).

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