Naxioides robillardi ( Miers, 1882 )

Naxioides robillardi ( Miers, 1882) View in CoL

Fig. 13A View Fig

Naxia (Naxioides) robillardi Miers, 1882: 339–341 , pl. 20 fig. 1 (type locality: Mauritius).

Hyastenus elegans Miers, 1886: 26 View in CoL (list), 40 (list), 44 (list), 58–59, pl. 6 fig. 3.

Naxia mammillata Ortmann, 1893: 56 , pl. 3 fig. 7 (type locality: Kagoshima, Japan).

Naxioides robillardi View in CoL – Balss 1929: 14 (list). — Griffin 1974: 21–22. — Griffin & Tranter 1986a: 169 (key), 171. — Poupin 1995: 86–96, 105 (key), figs 7, 8a–b, 9a–b. — Takeda & Komatsu 2005: 278. — Ng et al. 2008: 104 (list). — Richer de Forges & Ng 2013: 479 (list).

Naxioides mamillata – Rathbun 1911: 194 (list), 253. — Balss 1929: 14 (list). — Sakai 1938: 268–270, pl. 27 fig. 1; 1965: 78, pl. 35 fig. 1. — Serène & Lohavanijaya 1973: 52, figs 98–103, pl. 9C–D. — Takeda 1982: 124, un-numbered text-fig.

? Naxioides robillardi View in CoL – Guinot & Richer de Forges 1986: 149 –150, pl. 11 figs A–D.

(For complete synonymy, see Poupin 1995: 89).

Material examined

SOUTH CHINA SEA: 1 ♂ (39.2 × 24.5 mm) ( ZRC 2016.0065), northwest of Dongsha, stn CP4159, 20°45.92′ N, 116°41.11′ E to 20°47.62′ N, 116°42.34′ E, 221– 190 m, coll. ZHONGSHA 2015 Expedition, 30 Jul. 2015.

Remarks

Poupin (1995) provided a detailed review of Naxioides mammillata Ortmann, 1893 (type locality Japan), under which he synonymised with N. robillardi ( Miers, 1882) (type locality Mauritius). On the basis of a large series of specimens from the Indian and Pacific Oceans, Poupin (1995) observed that there was too much variation in the carapace armature to recognise both as separate species. Poupin’s (1995) arguments in synonymising the two taxa are followed in this study.

Distribution

This species was recorded from Mauritius ( Miers 1882), Japan ( Ortmann 1893), the Indian and Pacific Oceans ( Poupin 1995) and South China Sea ( Serène & Lohavanijaya 1973).