Periclimenes macrophthalmus Fujino and Miyake, 1970

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 : 703-705

Periclimenes macrophthalmus Fujino and Miyake, 1970

( Figure 25 )

Periclimenes (Harpilius) macrophthalmus Fujino and Miyake 1970, p 250 , Figures 3–5 . Periclimenes macrophthalmus: Li 2000, p 211 , Figure 272.

Material examined

Fiji: BORDAU 1, stn CP 1445, 350– 365 m, 17 ° 109S, 178 ° 429W, 3 March 1999, 1 ovig. ♀ (MNHN-Na 15620) .

Remarks

The single female accords well with the original description, although it is different in the following aspects: the proximal part of rostrum looks deeper than that of the holotype; the first tooth (epigastric spine) of the dorsal rostral series teeth is similar to others in size, not distinctly stronger than others; the rostrum is armed with at least two ventral teeth, the first minute; the upper flagellum of the antennule is fused for six basal segments. The present specimen is larger than the holotype, with the postorbital carapace length 4.90 mm, telson 3.45 mm. Both second pereiopods and most of the ambulatory pereiopods are lost in the holotype. The present specimen has both the second pereiopods and the ambulatory pereiopods on right side. Second pereiopods are similar and equal, overreaching the end of the scaphocerite by carpus and chela; the chela is subequal to the postorbital carapace length; the palm elongate, about 6.7 times longer than the maximal depth, with very sparse small tubercles; the fingers about 0.46 of the palm length, with strongly hooked tips, proximal 0.3 of the cutting edges of both fingers armed with four to five minute teeth, distal 0.7 of cutting edges entire, sharp; the dactyl about 5.5 times longer than the proximal depth; the carpus distintly swollen distally, about 0.77 of the palm length, 6.07 times the distal width, smooth; the merus unarmed distoventrally, subequal to palm length; ischium 0.95 of palm length; basis and coxa normal. The ambulatory pereiopods are slender. The third pereiopod overreaching the end of the scaphocerite by the dactyl and distal threefifths of the propod; the propod 0.65 of the postorbital carapace length, armed with three pairs of long spines and long setae distoventrally; the dactyl 0.17 of the propod length, slender and hooked, the flexor margin concave, unarmed, the unguis distinct; the carpus, merus and ischium 0.62, 1.05 and 0.45 times the palm length, respectively The fourth and fifth pereiopods similar to the third pereiopod. The diameter of egg is 0.45 and length 0.57 mm.

Previously only known from its type locality. The present record extends the range far eastward to Fiji, and the bathymetric range to 350–365 m.

Distribution

Type locality: East China Sea west of Goto Retto, Kyushu, Japan, 145 m. Now also known from Fiji, 350–365 m.

Figures

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 25. Periclimenes macrophthalmus Fujino and Miyake, 1970, ovigerous female (MNHN-Na 14620). (a) Carapace and anterior appendages; (b) right second pereiopod; (c) fingers of left pereiopod pereiopod. Scale bars: 1.41 mm (a); 2.24 mm (b); 0.5 mm (c).