Catoessa boscii ( Bleeker, 1857 )

Martin, Melissa B., Tuah, Alia, Muhamad, Juariah H. & Bruce, Niel L., 2022, A review of the family Cymothoidae (Isopoda: Cymothooidea) infesting marine fishes from Malaysian waters, with new host and geographical records, Zootaxa 5222 (1), pp. 1-36 : 6

Catoessa boscii ( Bleeker, 1857)

( Fig. 2 A–D )

Livoneca boscii Bleeker, 1856: 21 , 29–30, pl. 1, fig. 9.— Schioedte & Meinert, 1884: 365–367, pl. 15 (Cym. XXXIII), figs 7–8.— Nierstrasz, 1931: 143, 145.

Lironeca boscii Miers, 1880: 466–467 .—1915: 100.— Trilles, 1979: 265–266.— Trilles, 1994: 174.

Catoessa boscii .—Trilles, Ravichandran & and Rameshkumar, 2012: 181–188, figs 1–4.—Rameshkumar & Ravichandran, 2013: 119–120, figs 1, 2.— Rameshkumar, Ravichandran & Sivasubramanian, 2013b: 88–94.— Rameshkumar, Ravichandran & Ramesh, 2014c:124–128, fig. 6.— Aneesh, Helna & Sudha, 2016: 1270–1277, fig. 1f. —Anand Kumar, Rameshkumar, Ravichandran, Nagarajan, Prabakaran & Ramesh, 2017: 3.— Ravichandran, Vigneshwaran & Rameshkumar, 2019: 14 , figs 1d–f.

Joryma brachysoma .— Ravichandran, Rameshkumar & Balasubramanian, 2010a: 97–98, fig. 1.— Ravichandran, Sunitha & Rameshkumar, 2010b: 370–373, fig. 3.

Type material. Ovigerous female, Rijksmuseum von Natuurlijke Historie, RMNH (No. I. 67) (see Trilles et al. 2012) .

Type locality. Batavia Sea (= Java, Indonesia) .

Type host. Bleeker (1857) did not specifically state the type host and site attachment except for a generic comment “ Habite la peau de diverses especes de poissons ” which translates to “Living on the skin of different host species”.

Material examined. 1 ovig ♀ (12.55 mm TL; 5.68 mm W) ( UMT Crus 01158), 1 mature ♁ (7.94 mm TL; 2.10 mm W) ( UMT Crus 01159), stretch of beach along the Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 05°24.927’S; 103°5.2531’E, 8 March 2020, coll. Yusri Yusuf.

Host. Carangidae and Engraulidae : Stolephorus indicus (van Hasselt, 1823) ( Trilles, 1979) , Carangoides malabaricus (Bloch & Schneider, 1801) (refer to Trilles et al. 2012), Alectis indica indicus (Ŗppell, 1830) (see Anand Kumar et al. 2017), Rastrelliger kanagurta (Cuvier, 1816) ( Ravichandran et al. 2019) .

Distribution. Indonesia ( Bleeker 1857; Trilles 1979); southeast coast of India ( Trilles et al. 2012; Ravichandran et al. 2019); Malaysia, off the coast of Miri (Anand Kumar et al. 2017).

Remarks. Catoessa boscii can be identified by the elongate body shape and slender pleon; pleon slightly rotated with oblique angle against pereon plane; cephalon not immersed in pereonite 1, anterior margin truncated, reflexed ventrally into triangular lobe separating antennulae; posterior margin of pereonite 7 slightly concave. The genus contains three other species known to occur from the Pacific and Indian Oceans: Catoessa ambassae Bruce, 1990 from Australia; Catoessa gruneri Bowman & Tareen, 1983 from Kuwait and India; and Catoessa scabricauda Schioedte & Meinert, 1884 from Indonesia. Catoessa boscii was only recently reported as a new record for Malaysia from Miri, Sarawak by Anand et al. (2017) who reported the species in the buccal cavity of the host species Alectis indica (22% prevalence; 1.25 mean intensity).

Figures

FIGURE 2. Catoessa boscii (Bleeker, 1857). A, dorsal view; B, ventral view, ovigerous female (12.55 mm), (UMT Crus 01158); C, dorsal view; D, ventral view, male (7.94 mm), (UMT Crus 01159). Scale: 5 mm.