Gonodactylellu viridis (Serene & R. 1954)

Gonodactylus viridis Serène, 1954

Gonodactylus chiragra var. viridis Serène, 1954:7, 10, 74, 75, 76, fig. 13–3.

Gonodactylus viridis.—Manning, 1978c:4, fig. 2a–c.—Budiman and Moosa, 1983:399, 400.—Moosa, 1989:226.

MATERIAL.—Sta 415, Tubajon Bay, Philippines, 10°20′N, 125°32′E, coral reef, 17–19 Jul 1951: 3, 21–33 mm, 2, 26–50 mm.

DISTRIBUTION.—Previously reported from Phuket Island, Thailand, in the Andaman Sea, and in the Pacific from Vietnam, Indonesia, the Philippines, and the Ryukyu Islands, Japan; shore.

Gonodactylus viridis Serène, 1954

Gonodactylus chiragra var. viridis Serène, 1954:6, 7, 10, 74, 75, 76, fig. 13–3.

?Gonodactylus chiragra.—Liu, 1975:188, figs. 3–4, figs. 3–5 [part] [not G. chiragra (Fabricius, 1781)].

MATERIAL.—KoPhuket Island, Thailand, Andaman Sea; in shale and coral, shore to 1.5 m; R. Caldwell, leg.; Aug 1973: 3 , TL 23–41 mm; 2 , TL 33–43 mm (USNM 150597).

DESCRIPTION.—Rostral plate (Figure 2a) with width slightly greater than length or length and width subequal, apical spine relatively short; anterolateral angles broadly rounded, acute. Ocular scales (Figure 2a) small, breadth of both less than ⅓ plate width, triangular, apices angled or rounded. Sixth abdominal somite (Figure 2b) with 6 carinae, narrow in juveniles, inflated in adults, each usually with apical tubercle or spinule. Telson (Figure 2b) appearing broad, length and width subequal or width slightly greater, with 3 pairs of blunt marginal teeth, submedians with movable apices. Submedian, intermediate, and marginal carinae slender, unarmed dorsally. Median and anterior submedian carinae slender in juveniles and smaller females, very inflated in large males (Figure 2c), unarmed dorsally, usually unarmed posteriorly, each with posterior tubercle in smaller specimens. Accessory median carinae very short, not extending anteriorly beyond posterior third of median carina, separate in juveniles, fusing posteriorly to form anchor in adults. Knob indistinct or absent. Row of submedian and 2 intermediate denticles present, lateral denticles absent. Uropod (Figure 2b) with normal setation, proximal segment of exopod with 9–10 short, movable spines. Color completely faded in available material.

MEASUREMENTS.—Males, TL 23–41 mm; females, TL 33–43 mm. Serène (1954) had more than 300 specimens available, all less than 40 mm long, including females 35 mm long with eggs. Other measurements of male, TL 41 mm: carapace length 11.0; rostral plate length 2.8, width 3.0; fifth abdominal somite width 8.5; telson length 7.2, width 7.2.

DISTRIBUTION.—Known with certainty from the Bay of Nhatrang, Viet Nam, and from KoPhuket Island, Thailand, in the Andaman Sea.

Hoplosquilloides, new genus

DEFINITION.—Size small, TL not exceeding 25 mm. Rostral plate (Figure 3a) sharply trispinous. Cornea (Figure 3a) elongate, not expanded laterally. Anterior margins of lateral plates of carapace (Figure 3a) convex, extending anteriorly beyond base of rostral plate. Ischiomeral articulation of claw subterminal. Propodus of claw with proximal movable spine. Dactylus of claw unarmed. Articulation of propodus and dactylus inflated. Mandibular palp present. Articulated anterolateral plates of abdomen (Figure 3b) present. Posterior margin of sixth abdominal somite (Figure 3c) concave medially. Telson (Figure 3c,d) of unusual shape, ornamentation bizarre, dorsal and marginal armature arranged in circle around almost vertical plane, anus opening in that plane above bases of marginal teeth. Posteroventral margin of telson produced into 2 primary pairs of long slender teeth, submedians with movable apices, inner and outer margins lined with long, slender, simple setae. Submedian denticles absent, replaced by simple setae. Proximal segment of uropodal exopod (Figure 3e,f) extending beyond articulation with distal segment. Movable spines on outer margin of proximal segment not markedly enlarged or strongly recurved. Endopod slightly curved mesially. Distal segment of uropodal exopod and uropodal endopod (Figure 3e,f) with strong fixed spines on mesial margin.

TYPE-SPECIES.—Hoplosquilloides coronatus, new species.

ETYMOLOGY.—The name is derived from the Greek -oides, meaning “like,” in combination with the generic name Hoplosquilla. The gender is masculine.