Chlorocurtis Kemp, 1925

Komai, Tomoyuki, Chan, Tin-Yam & Grave, Sammy De, 2019, Establishment of a new shrimp family Chlorotocellidae for four genera previously assigned to Pandalidae (Decapoda, Caridea, Pandaloidea), Zoosystematics and Evolution 95 (2), pp. 391-402 : 396

Genus Chlorocurtis Kemp, 1925

Chlorocurtis Kemp 1925: 272, 279; Holthuis 1955: 118, 127; 1993: 263, 265; Hayashi 2007b: 248.

Type species.

Chlorocurtis miser Kemp, 1925.

Diagnosis.

Rostrum short but well developed, directed forward, reaching midlength of article 1 of antennular peduncle; dorsal margin crested, with five to seven teeth including two or three postrostral; ventral margin unarmed ( Fig. 4A ). Carapace without conspicuous projections on dorsal midline; no supraorbital tooth; suborbital lobe absent; pterygostomial tooth moderately small ( Fig. 4A ). Pleomeres 1-5 dorsally rounded; pleomeres 1 - 3 with long, erect setae on dorsal surface; pleomeres 4 and 5 each without pair of posterolateral teeth; pleomere 5 without deep transverse groove near posterodorsal margin, pleuron rounded posteriorly; pleomere 6 without posteromedian tooth, posteroventral angle unarmed ( Fig. 4B ). Telson posterior margin rather broad, convex, with three pairs of unequal spiniform setae ( Fig. 4C ). Eye without ocellar spot (nebenauge) ( Fig. 4D ). Antennular peduncle article 1 unarmed on dorsodistal margin; stylocerite obliquely truncate distally, distolateral angle terminating in tooth, distomesial angle subacute or blunt; outer flagellum shorter than peduncle, distal portion reduced to single article ( Fig. 4E ). Short, club-like, modified setae present at ventrodistal margin of article 2 of antennular peduncle (one seta) and distal margin of antennal scaphocerite (two setae) ( Fig. 4F, G .). Mandible without palp ( Fig. 4H ). Maxillule palp with well-developed distal outer lobule ( Fig. 4I ). Maxilla with short, distally tapering endopod ( Fig. 4J ). Maxilliped 1 with coxal and basial endites well developed, both with row of setae on mesial margin; exopodal flagellum well developed ( Fig. 4K ). Maxilliped 2 endopod with dactylus located at distal portion of propodus; exopod well developed ( Fig. 4L ). Pereopods 3-5 propodi broadened distally, oblique flexor distal margins each with short rows of narrowly spaced long spiniform setae flanking field of short setae, forming prehensile structure together with dactylus folded back; carpi without spiniform setae on lateral surface; meri without spiniform setae; ischia without spiniform seta on ventral surface ( Fig. 5 E–G ). Male pleopod 1 endopod without appendix interna.

Composition.

Monotypic.

Distribution.

Indo-West Pacific, intertidal to 10 m; sea-grass beds.

Remarks.

Chlorocurtis was originally established for Chlorocurtis miser by Kemp (1925).

Later, Holthuis (1947) synonymized Chlorocurtis miser with Virbius (?) jactans (Nobili, 1904) without any argumentation, although clearly correct. This synonymy has since been widely adopted (e.g., Holthuis 1955; Ledoyer 1968, 1984; Bruce 1976; Hayashi 2007b; Holthuis 1993; De Grave and Fransen 2011; Gan and Li 2018).

Figures

Figure 4. Chlorocurtis jactans (Nobili, 1904), ovigerous female (cl 1.3 mm), CBM-ZC 11596. A. Carapace, lateral view; B. Pleon, lateral view; C. telson, dorsal view; D. Left eye, dorsal view; E. Left antennule, dorsal view (inner flagellum damaged); F. Right antennular peduncle, distal 2 articles, mesial view; G. Left antenna, ventral view (flagellum missing); H. Left mandible, outer view; I. Left maxillule, outer view; J. Left maxilla, outer view; K. Left maxilliped 1, outer view; L. Left maxilliped 2, outer view (epipod broken off).

Figure 5. Chlorocurtis jactans (Nobili, 1904), ovigerous female (cl 1.3 mm), CBM-ZC 11596, left thoracic appendages in lateral view (except for C). A. Maxilliped 3; B. Pereopod 1; C. Same, propodus, mesial view; D-G. Pereopods 2 - 5, respectively.