New Zealand Journal of Marine and Freshwater Research abstracts

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LIFE-HISTORY STUDIES ON NEW ZEALAND BRACHYURA 4. ZOEA LARVAE HATCHED FROM CRABS OF THE FAMILY GRAPSIDAE

Robert G. Wear

Zoology Department, Victoria University of Wellington, New Zealand

Abstract Pre-zoea and first stage zoea larvae of the New Zealand grapsid crabs Leptograpsus variegatus (Fabricius), Planes marinus Rathbun, Hemigrapsus crenulatus (H. Milne Edwards), H. edwardsi (Hilgendorf), Cyclograpsus lavauxi H. Milne Edwards, C. insularum Campbell and Griffin, Helice crassa Dana, and Plagusia chabrus (Linnaeus) are described, and a key is given for their separation.

On the basis of larval characters known grapsid zoeae fall into four groups, and these support the arrangement of adult genera into subfamilies except for a division among larvae of the subfamilies Varuninae and Sesarminae. The four groups are defined in a key and this arrangement is compared with an earlier system of larval classification. Grapsid zoeae show close affinities with those of genera in the families Ocypodidae and Gecarcinidae.

N.Z. Jl mar. Freshwat. Res. 4: 3-35.
Received for publication 5 December 1968

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