Chondrochelia acrolophus ( Bird, 2015 )

Bird, Graham J., 2020, Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017, Zootaxa 4860 (2), pp. 151-178 : 162

Chondrochelia acrolophus ( Bird, 2015)

Fig. 12A

Leptochelia acrolophus: Bird (2015) : 383 –390, figs 14–20; 400, table 2.

Chondrochelia acrolophus ( Bird, 2015) : Bird (2019): 10, table 4.

Chondrochelia acrolophus Bird, 2015 [sic]: Bird (2019): 70, table 10.

Material examined. 9 manca-III, 27 non-ov. ♀♀, 2 ov. ♀♀, 1 post-ov. ♀♀, 1 copulatory (cop.) ♂, AIM MA168501, SWP2017-135 -2; 1 manca-III, 8 non-ov. ♀♀, 1 prep. ♀, 2 ov. ♀♀, 2 cop. ♂♂, AMS P.105591, SWP2017-135-3; 1 manca-II, 2 manca-III, 9 non-ov. ♀♀, 1 prep. ♀, AMS P.105596, SWP2017-137-2; 3 manca-II, 2 manca-III, 68 non-ov. ♀♀, 2 prep. ♀♀, 3 ov. ♀♀, AMS P.105592, SWP2017-137-3; 5 non-ov. ♀♀, 1 prep. ♀, AMS P.105587, SWP2017-143-2; 1 manca-III, six non-ov. ♀♀, 1 ov. ♀, 2 cop. ♂♂, AMS P.105590, SWP2017-143-3; 1 non-ov. ♀, AMS P.103257, 2 manca-III, 2 non-ov. ♀♀, 1 post-ov. ♀, AMS P.105598, SWP2017-145 .

Distribution. Raoul Island, Macauley Island and L’Esperance Rock, 4– 30 m.

Remarks. This species was originally described as Leptochelia acrolophus but, following a review of the family Leptocheliidae by Guţu (2016), Bird (2019) assigned it to the genus Chondrochelia . It is the second most abundant tanaid in the Kermadecian part of the SWP2017 survey after the tanaidid Zeuxo kermadecensis , and these new records concur with those obtained in the K2011 collection ( Bird 2015: 383, 389). A similar species, C. corfortis Bird, 2019 was recently described from French Polynesia, with a tabulated comparison of other Chondrochelia species from the Indopacific and nearby regions (ibid: 25, table 5).

Figures

FIGURE 12. Comparative size of Rangitâhua-Kermadecs shallow-water tanaids based on holotype or representative specimens. A, Chondrochelia acrolophus; B, Aparatanais tetradonta; C, Zeuxo kermadecensis; D, Paradoxapseudes floppae; E, Psalidichelia concinna; F, Metatanais progenitor; G, Tanais sp.; H, Collettea coralensis; I, leptocheliid LK#1. Scale bars: 1 mm for all.