Heterotanoides, Sieg, 1977

Bird, Graham J., 2019, Tanaidacea (Crustacea: Peracarida) from the Southern French Polynesia Expedition, 2014. I. Tanaidomorpha, Zootaxa 4548 (1), pp. 1-75 : 9

Heterotanoides sp. FP#1

( Fig. 2 )

Material examined. Preparatory (prep.) ♀, 1.28 mm, P. 102316, Stn 8-8.

Distribution. Ahurei Harbour, Rapa Iti, Bass (Austral) Islands, rubble, 2–17.7 m.

Remarks. Only a single specimen of this leptochelioid genus ( Bird 2012) was recorded in this survey, precluding it from formal description. Although it has a close overall similarity ( Fig. 2A–F ) to its congeners ( H. capensis Vanhöffen, 1914 ), H. cognatus Bamber & Bird, 1997 , H. meridionalis Sieg, 1986a , H. muimui Bird, 2012 , and H. ornatus Kudinova-Pasternak, 1976 ), it differs in having a character combination of: antennule article-3 with one subdistal aesthetasc ( Fig. 2C ), the cheliped palm with two ventral setae ( Fig. 2D ), and a two-segmented uropod exopod shorter than the endopod segment-1 ( Fig. 2F ). Of its congeners, the Heterotanoides species from Rapa Iti may be most like H. muimui from the northern region of the North Island, New Zealand ( Bird 2012).

Figures

FIGURE 2. Heterotanoides sp. FP#1 preparatory female (P.102316). A, habitus; B, pleotelson; C, antennule and eye, slightly oblique; D, right cheliped; E, pereopod-1 coxa and proximal of basis; F, uropod. Scale bars: habitus 0.5 mm, others 0.1 mm.