Palaemonella hachijo Okuno, 1999

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 : 657

Palaemonella hachijo Okuno, 1999

Palaemonella hachijo Okuno 1999, p 739 , Figures 1–3 ; Okuno 2000, p 1297, Figure 1 .

Material examined

New Caledonia: west coast, mangrove, coll. B. Richer de Forges, 2 December 1992, 1 spm (MNHN-Na 15628).

Remarks

See also remarks on Palaemonella komaii sp. nov. The specimen is not in good condition, dried, the right second and fifth pereiopods, left fourth and fifth pereiopods lost, left second and third pereiopods detached. But, the long and large antennal spine which is larger than hepatic spine and distinctly exceeds the antennal basicerite, relatively shorter ambulatory dactyl which is about eight times proximal depth and with only one row of dorsal setae, the propod is not segmented and the distoventral spine is relatively longer which is about onethird of dactyl, show that the specimen is closer to P. hachijo than to P. dolichodactylus . The rostral formula is 2+6/3, similar to the specimens of Okuno (2000), the posteroventral angle of fifth abdominal somite armed with acute tooth. Previously known only from its type locality Hachijo-jima Island, and Okinawa, Japan.

Distribution

Type locality: Hachijo-jima Island , Japan, 15–45 m. Now also known from New Caledonia, mangrove .

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.