Transparent Anemone Shrimp

Periclimenes inornatus Kemp, 1922

Periclimenes (Ancylocaris) inornatus Kemp, 1922;191, figs. 43–46 [type locality: Port Blair, Andaman Islands].

Periclimenes aff. inornatus Fransen, 1989:136, fig. 2.

DIAGNOSIS.—Integument smooth, not pitted, on lateral areas of carapace and abdomen; rostrum directed anteroventrad not overreaching antennal scale, shallow, ventrally convex, rostral formula 7–8/0–2, posterior tooth not isolated from remainder of dorsal rostral series, situated slightly anterior to level of hepatic spine; carapace without supraorbital or postorbital spine, hepatic spine not noticeably larger than antennal spine, arising posteroventral to latter, not extending beyond anterior margin of carapace, orbital angle distinctly produced, subacute, not ovate; abdomen without compressed dorsal prominence on 3rd somite, 6th somite about 1.5 times length of 5th; telson with 2 pairs of well-developed dorsal spines, anterior pair at about 0.3 of length; eye with cornea hemispherical, not produced distally; antennular peduncle with 1 small distolateral spine on basal segment; antennal scale about 2.2 times longer than wide, lateral margin feebly convex, distolateral tooth not nearly reaching level of distal margin of blade; 4th thoracic sternite with transverse ridge with small open median notch; 1st pereopod overreaching antennal scale by fingers of chela, fingers subspatulate, margins pectinate; 2nd pereopod with fingers about as long as palm, carpus about of palm length, about 1 times as long as distal width, without distal spines, merus without tooth on flexor margin; 3rd pereopod with dactyl not subdistally truncate, without denticulate lobe on flexor margin, simple, flexor margin sinuously concave, propodus without spines, not segmented; 5th pereopod reaching to about of scale length; uropod slightly exceeding extended telson; maximum postorbital carapace length more than 4 mm.

RANGE.—Kenya, Zanzibar, Seychelles, Comoro, Maldive and Andaman islands, Ryukyu Islands, Indonesia, South China Sea, Great Barrier Reef, Fiji and Caroline islands.

Periclimenes inornatus Kemp, 1922

Periclimenes (Ancylocaris) inornatus Kemp, 1922, pp. 170 (key), 191-194, figs. 43-46.

Periclimenes (Harpilius) inornatus Holthuis, 1952, p. 11.—Bourdon, 1967, p. 171.

MATERIAL EXAMINED.—(1) Moroni, Grande Comoro Islands, 22 November 1964, 10 specimens, including 4 ovig. . (2) Cerf Is., Mahé, Seychelles Islands, 9 December 1964, 12 specimens, including 2 ovig. .

DISTRIBUTION.—The only previous records of this species are from the Andaman and the Maldive Islands.