Palaemonella pusilla Bruce, 1975

Li, Xinzheng & Bruce, Alexander J., 2006, Further Indo-West Pacific palaemonoid shrimps (Crustacea: Decapoda: Palaemonoidea), principally from the New Caledonian region, Journal of Natural History 40 (11 - 12), pp. 611-738 : 666

Palaemonella pusilla Bruce, 1975

( Figures 12 , 13 )

Palaemonella pusilla Bruce 1975c, p 169 –177, Figures 1–5 ; Li 2000, p 104, Figure 114.

Material examined

New Caledonia: MONTROUZIER, Koumac, (i) Koumac Pass, outer reef, scuba, 20 m, coll. B. Richer de Forges, 6 October 1993, 1 „ (MNHN-Na 14839); (ii) Grand Récif, outer slope, scuba, 12 m, coll. B. Richer de Forges, 7 October 1993, 1 „ (MNHN-Na 14840). Loyalty Islands: ATELIER LIFOU, Lifou, Santal Bay , (iii) Pointe Lefèvre , stn 1435, 20 ° 55.29S, 167 ° 00.79E, 5–30 m, steep drop-offs and overhangs, 8 November 2000, 2 „„ (MNHN-Na 15486); (iv) between Huca Hutighé Islet and shore, stn 1421, 20 ° 52.49S, 167 ° 08.59E, 4 m, coarse sand on flatstone, 26–27 November 2000, 1♀ (MNHN-Na 15485); (v) west of Easo Point , stn 1451, 20 ° 47.39S, 167 ° 06.89E, 10–21 m, coral heads, 19 November 2000, 1 „, 3♀♀ (2 ovig.) (MNHN-Na 15484) .

Remarks

Previously known only from the type material. The specimens are not in good condition but are adequate for identification. The Koumac specimen lacks all second to fifth pereiopods; the Grand Récif specimen has the right second pereiopod still preserved. The rostrum is short and acute, not exceeding the end of the second segment of the antennular peduncle, with a dentition of 1+5/1, without supraorbital ridges or tubercles; antennal spine large, laterally projecting; hepatic spine normal. In the Koumac specimen, the mandible with a small single-segmented palp. Cornea large, about 0.24 of carapace length. Merus of second pereiopod without distoventral spine, carpus distally swollen, with strong dorsal tooth.

Distribution

Type locality: Kisiti Island, Kenya. Now also known from New Caledonia and Loyalty Islands .

Figures

Figure 1. Palaemonetes atrinubes Bray, 1976, ovigerous female (MNHN-Na 14843). (a) Carapace and anterior appendages; (b) anterior carapace; (c) distal part of proximal peduncular segment; (d) antennal scale; (e) distal telson; (f) mandible; (g) first pereiopod; (h) same, chela; (i) second pereiopod; (j) same, chela; (k) third pereiopod; (l) same, propod and dactyl; (m) same, distal propod and dactyl.

Figure 2. Harpiliopsis spinigera (Ortmann, 1880), male (MNHN-Na 15838). (a) Second pereiopod; (b) same, fingers.

Figure 3. Kemponia agag (Kemp, 1922), male (MNHN-Na 14877). (a) Carapace and anterior appendages; (b) antennal scale; (c) second pereiopod, ischium, merus, and carpus; (d) same, chela; (e) same, fingers; (f) same, article of carpus and chela; (g) proximal fingers; (h) third pereiopod, propod and dactyl; (i) same, distal propod and dactyl.

Figure 4. Kemponia ensifrons (Dana, 1852), ovigerous female (MNHN-Na 14891). (a) Carapace and anterior appendages; (b) anterior carapace; (c) antennule; (d) antenna.

Figure 5. Kemponia ensifrons (Dana, 1852), ovigerous female (MNHN-Na 14891). (a) Second pereiopod; (b) same, chela and carpus; (c) third pereiopod, propod and dactyl; (d) same, distal propod and dactyl.

Figure 12. Palaemonella pusilla Bruce, 1975, male (MNHN-Na 14839). (a) Carapace; (b) rostrum; (c) telson; (d) same, distal; (e) antennule; (f) antenna.

Figure 13. Palaemonella pusilla Bruce, 1975, male (MNHN-Na 14839). (a) Mandible; (b) same, incisor process; (c) first pereiopod; (d) second pereiopod; (e) same, fingers; (f) same, carpus; (g) endopod of second pleopod.