Tenagomysis macropsis Tattersall, 1923

Fukuoka, Kouki & Bruce, Niel L., 2005, A new species of Tenagomysis (Crustacea: Mysida: Mysidae) from New Zealand with notes on three Tenagomysis species, Zootaxa 878, pp. 1-15 : 10-11

Tenagomysis macropsis Tattersall, 1923 ( Figs 1C, D , 6 )

Tenagomysis macropsis Tattersall, 1923 , 294–295, plate III figs. 1–12.

Material examined

All material Timaru, South Is., New Zealand. NIWA 3950: 1 Ψ (10.5 mm), stn TM060, 44°39.1´S 171°25.8´E, 13 Feb. 2002, 9 m, epibenthic sled. NIWA 3951: 2 ɗ (9.1, 9.2 mm) and 5 Ψ (10.3–12.1 mm), stn TM065, 44°38.7´S 171°26.0´E, 13 Feb. 2002, 7 m, epibenthic sled.

Remarks

Tenagomysis macropsis was established on the basis of specimens collected from northern New Zealand by Tattersall (1923). This species had not since been recorded.

The Timaru specimens agree with the original description except for the carpopropodus of the eighth thoracopod. In the original description the distal subsegment of the carpopropodus is shorter than the middle subsegment, whereas it is twice as long as the middle subsegment in the present specimens ( Fig. 6 G).

The mouthparts of T. macropsis are first illustrated here ( Fig. 6 C–E).

The female pleopods of T. macropsis differ from those of T. longisquama in that they are slender and gradually narrowed distally ( Fig. 6 J) as opposed to the knife­shaped pleopods of T. longisquama (Fig. 3E–I).

Figures

FIGURE 6. Tenagomysis macropsis Tattersall, 1923. A, C – I, K, L, ♂ (9.1 mm), NIWA 3951; B, J, Ψ (10.3 mm), NIWA 3951. A, B, anterior part of body, dorsal; C, left mandible, ventral; D, left maxillule, ventral; E, left maxilla, ventral; F, eighth left thoracopod, posterior; G, carpopropodus of eighth left thoracopodal endopod, posterior; H, left penis, mesial; I, fourth left pleopod of male, posterior; J, fifth left pleopod of female, posterior; K, uropodal endopod, ventral; L, uropod and telson, dorsal.

FIGURE 1. A, T. longisquama sp. nov., ♂ (23.1 mm), holotype, NIWA 3927 (H­ 878); B, T. longisquama sp. nov., Ψ (26.1 mm), paratype, NIWA 3928 (P­ 1433); C, T. macropsis, ♂ (9.1 mm), NIWA 3951; D, T. macropsis, Ψ (10.3 mm), NIWA 3951; E, T. producta, ♂ (10.5 mm), NIWA 3956; F, T. producta, Ψ (15.7 mm), NIWA 3953.