Antarctic and Subantarctic Pycnogonida: Ammotheidae and by C. Allan Child

By C. Allan Child

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Published via the yankee Geophysical Union as a part of the Antarctic examine Series.


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Trunk with tall conical tubercles at dorsomedian points o n seg­ mentation ridges. Lateral processes short, typical. Anterior cephalic segment with small tubercles dorsal to chelifore insertion. Proboscis l o n g , moderately slender, distally inflated from proximal cylinder. A b d o m e n slender, moderately long. Chelifores slen­ der, scape about half proboscis length, with l o w dorsodistal tubercle, chelae reduced, atrophied. Palps typical, 9-segmented. Oviger strigilis segments re- Copyright American Geophysical Union Antarctic Research Series Vol.

Oviger strigilis w i t h fields o f very short setules. L e g s w i t h rows o f very short spinules mostly o n major segments. Propodus without differentiated heel spines, sole with field o f tiny spinules. Claw short, auxiliaries more than half main claw length. Remarks. 29 T h e conspicuous and extremely curved There are o n l y five species o f this genus k n o w n to inhabit the Subantarctic, and only o n e is also k n o w n s o far from the h i g h Antarctic. T h e five Subantarctic species are Ascorhynchus antipodum Child, 1987; A.

S t o c k , 1 9 6 5 , p. -Clark, 1977, pp. -Krapp, 1 9 8 0 , p . 2 . -Fry and Hedgpeth, 1969, pp. 7 9 - 8 1 , Figs. 104, 105, 116-119. Material examined. Eltanin: 12-1003 (one female, o n e j u v e n i l e ) , 2 2 - 1 5 3 5 (one female), 2 7 - 1 8 7 1 (one female), 2 7 - 1 8 7 3 (one female), 2 7 - 1 8 7 7 (five males with e g g s , o n e male, o n e female), 2 7 - 1 8 8 0 (one female). Hero: 6 9 1 - 2 6 (three j u v e n i l e s ) , 1 9 7 2 , sta 2 3 (one j u v e n i l e ) , 8 2 4 - 3 0 - 1 (one j u v e n i l e ) .

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