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Three new species of the genus Megokris (Decapoda, Penaeidae) from Hall's and Motoh's collections.

Authors :
Shinomiya, S.
Sakai, K.
Source :
Crustaceana. Nov2006, Vol. 79 Issue 10, p1251-1268. 18p. 7 Diagrams.
Publication Year :
2006

Abstract

Three new species of the genus Megokris, M. manihine sp. n. and M. halli sp. n. from the South China Sea and the East China Sea, and M. motohburiorum sp. nov. from the Philippines, are described. In these three new species, the rostral teeth as well as the dorsal carinae on abdominal somites 2-6 are very similar to the corresponding structures in Megokris granulosus (Haswell, 1879) from Torres Strait, Queensland, and M. pescadoreensis (Schmitt, 1931) from Taiwan. However, the thelycum and petasma are characteristically different: in M. halli sp. n., the anterior plate of the thelycum bears a longitudinal middle protuberance, which is largely concave laterally in its middle region, and elevated with a round projection in its posterior part; and the anterior plate of the thelycum does not reach the posterior margin of the seminal receptacle. In M. manihine sp. n., the anterior plate of the thelycum bears a median longitudinal protuberance with a median ridge, the posterior part of which is conspicuously elevated with a pair of lateral swellings; the anterior plate of the thelycum does not reach the posterior edge of the seminal receptacle. In M. motohburiorum sp. n., the prominent median protuberance of thelycum is narrow in its anterior half and broadened with an elevation in its posterior half, while the posterior margin is rounded; the anterior plate of the thelycum is connected with the posterior edge of the seminal receptacle. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
0011216X
Volume :
79
Issue :
10
Database :
Academic Search Index
Journal :
Crustaceana
Publication Type :
Academic Journal
Accession number :
23136452
Full Text :
https://doi.org/10.1163/156854006778859579