Plate 1 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.185, Fig.33]. Female (from 31°12'N, 119°17'W): a, urosome (left side); b, urosome with genital somite somewhat inflated by deep telescoping of the following somite (left); c, urosome (dorsal); d, genital somite (ventral); e, right Mxp (anterior). Nota: Coxa of Mxp with 1+2 setae (Fig.33-e). Genital somite in dorsal view with nearly straight lateral margins (Fig.33-c) and in ventral view with the genital operculum close to anterior end of somite (Fig.33-d.
Male: f, g, P5 (anterior, posterior, respectively); h, distal end of exopod of left P5 (anterior); i, j, second exopodal segment of right P5 (posterior, anterior, respectively). Nota: 2nd exopodal segment of right P5 with elongate mefial projection (Fig.33-i).
Distribution
NZ: 4
Distribution map of Hemirhabdus amplus by geographical zones
Park (2000, p.56) notes when the two species H. grimaldii and H. amplus co-occurred in samples, this latter was always the larger (mainly the females). This species differs from that of H. grimaldii by the genital somite having rather straight lateral margin, a depth about equal to the length, and a genital operculum close to its anterior end. The Mxp with the coxa, normally has o,ly 2 distal setae and 3 large pores on the anterior surface and the endopod normally has only 1 pore anteriorly. The male can be distinguished from that of H. grimaldii by the terminal spine of the left exopod, which is relatively short and tapers to a sharp spine, and by the fingerlike medial projection of the 2nd segment of the right exopod.
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