Periclimenes crinoidalis Chace, 1969

Fransen, Charles H. J. M., 2023, The marine palaemonid shrimps (Crustacea, Deapoda, Caridea) of the Dutch Caribbean, Zootaxa 5387 (1), pp. 1-127 : 78-81

publication ID	https://doi.org/ 10.11646/zootaxa.5387.1.1
publication LSID	lsid:zoobank.org:pub:0AD29F74-D349-4E12-8CA4-310275A847B3
DOI	https://doi.org/10.5281/zenodo.10390034
persistent identifier	https://treatment.plazi.org/id/03B787A1-FFAC-0229-FF5F-FBB3FE81FE80
treatment provided by	Plazi
scientific name	Periclimenes crinoidalis Chace, 1969
status

Treatment

Periclimenes crinoidalis Chace, 1969 View in CoL

( Figs. 51–52 View FIGURE 51 View FIGURE 52 , video 11)

Periclimenes crinoidalis Chace, 1969: 251 View in CoL ( Curaçao); Chace 1972: 35 ( Curaçao).

Not Periclimenes crinoidalis View in CoL — Horká et al. 2016: supplementary table 1 ( Curaçao), is P. bowmani Chace, 1972 View in CoL .

Material examined. Curaçao: RMNH. CRUS.D.28336: 1 male, pocl. 1.6 mm , R =6/1, 1 ovigerous female, pocl. 24.5 mm, R =1+8/4; Piscaderabaai , 8.v.1962, between arms of Nemaster grandis A.H. Clark, 1909 , collected by I. Kristensen. Bonaire: RMNH. CRUS.D.57892: many specimens, pocl. 1.0– 2.4 mm; stn BON.26, Small Wall , 12°10.685′N 068°17.539′W, 3.xi.2019, depth 42 m, scuba diving, on N. grandis , collected by C.H.J.M. Fransen (video 11) GoogleMaps .

Remarks. The morphological characters of the present specimens agree well with the original description by Chace (1969). Rostrum ( Fig. 50A, B, D, E View FIGURE 50 ) straight, slightly directed downward, reaching distal margin of distal segment of antennular peduncle; dorsal lamina not developed, with 3–8 dorsal teeth (number increases with size) at equal distances, proximal tooth at level of orbit; ventral lamina slightly concave with 0–4 small teeth (number incrases with size) distally. Hepatic tooth ( Fig. 50A View FIGURE 50 ) slightly below level of antennular tooth, directed forward. Third abdominal segment ( Fig. 50C View FIGURE 50 ) posteriorly produced. Telson ( Fig. 50F View FIGURE 50 ) with 2 pairs of small dorsal spines at about 0.6 and 0.8 of telson length; lateral distal pair of same size as dorsal spines; posterior margin of telson ( Fig. 50G View FIGURE 50 ) with small triangular process; this process was not figured nor mentioned by Chace (1969). Basal segment of antennular peduncle ( Fig. 50B View FIGURE 50 ) with distolateral tooth and additional 2–3 teeth on anterior margin. Maxilla with endite bilobed. Ischiomerus of third maxilliped without distomedial mobile spine. Second pereiopods ( Fig. 51A, B View FIGURE 51 ) dissimilar and unequal; fingers of major chela ( Fig. 51B, C View FIGURE 51 ) curved, with pair of low teeth in proximal part of cutting edge each ( Fig. 51D, E View FIGURE 51 ); movable finger with distinct dorsal carina ( Fig. 51B–E View FIGURE 51 ), fixed finger as broad as movable finger, ventral surface glabrous. Ambulatory pereiopods with propodus ( Fig. 51F View FIGURE 51 ) straight, with one subdistal ventral distally serrate spine ( Fig. 51G, H View FIGURE 51 ) and two distoventral distally serrate spines. Dactylus of third pereiopod ( Fig. 51G, H View FIGURE 51 ) with almost straight entire flexor margin; accessory tooth small or absent; unguis slender, about half length of corpus.

Colour (video 11). Translucent with black and white markings, matching the colouration of the host.

Ecology. The species was found in association with the crinoid Nemaster grandis A.H. Clark, 1909 by Chace (1969), Criales (1984), and Vera-Caripe et al. (2019).

Distribution. Known from few localities in the tropical western Atlantic: Curaçao ( Chace 1969, 1972), Santa Marta, Columbia ( Criales 1984), Martinique ( Poupin 2018), Venezuela ( Vera-Caripe et al. 2019) in depths between 15 and 38 m. Previous records from Curaçao by Chace (1969, 1972). Herein recorded for the first time from Bonaire at a depth of 42 m.