Clorida albolitura Ahyong & Naiyanetr, 2000

Nakajima, Hiroki, Ueda, Tetsuya, Itani, Gyo & Osawa, Masayuki, 2024, The mantis shrimp genus Clorida Eydoux & Souleyet, 1842 (Crustacea: Stomatopoda: Squillidae) in Japan, with the first Japanese record of Cloridina ichneumon (Fabricius, 1798), Zootaxa 5463 (4), pp. 501-523 : 502-504

publication ID	https://doi.org/ 10.11646/zootaxa.5463.4.3
publication LSID	lsid:zoobank.org:pub:A6CA71C8-39C0-4015-96A8-633AEC27AB72
DOI	https://doi.org/10.5281/zenodo.11612447
persistent identifier	https://treatment.plazi.org/id/B85AD42F-E920-FFA3-FF39-FC89FB35FC3F
treatment provided by	Plazi
scientific name	Clorida albolitura Ahyong & Naiyanetr, 2000
status

Treatment

[New Japanese name: Tosa-meboso-shako]

( Fig. 1 View FIGURE 1 )

Restricted synonymy.

Clorida albolitura Ahyong & Naiyanetr, 2000: 317–320 , fig. 2 [type locality: Ang Sila, Gulf of Thailand].— Ahyong 2001: 217–219, fig. 105.— Ahyong et al. 2008: 79, 80, figs. 57–59.

Clorida japonica .— Okada et al. 2016: 206, 207 (part).

Material examined. SINH-CR 1447, 1 male (TL 74.0 mm, CL 13.1 mm), Susaki fishing port, Kochi Prefecture, Tosa Bay , around 50–90 m depth, bottom trawling, coll. Y. Machida, 15 Jul. 2004. SINH-CR 1455, 1 female (TL 65.3 mm, CL 13.2 mm), 22 Jul. 2004, other data same as SINH-CR 1447 .

Diagnosis. Carapace with distinct anterolateral spines ( Fig. 1B View FIGURE 1 ). A1 somite dorsal processes with short, triangular apices ( Fig. 1C View FIGURE 1 ). Distal margin of second segment of A2 peduncle ( Fig. 1B View FIGURE 1 , red arrow) extending anteriorly beyond eyes. Mandibular palp present. Raptorial claw dactylus with 5 teeth; extensor margin with basal notch ( Fig. 1D View FIGURE 1 ). TS5 lateral process with acute spine ( Fig. 1E View FIGURE 1 ). TS6–8 each lacking SM carinae. AS 1–6 with distinct SM carinae ( Fig. 1F View FIGURE 1 ). Telson with long postanal carina, extending beyond half distance between anal pore and posterior margin ( Fig. 1G View FIGURE 1 ). Eye stalk without black band dorsally ( Fig. 1A–C View FIGURE 1 ). A2 scale without black pigments ( Fig. 1A View FIGURE 1 ; Galil et al. 2009: fig. 1A, B). Telson median carina with large white patch in life ( Ahyong et al. 2008: figs. 57, 58).

Colour. Largely faded in alcohol ( Fig. 1 View FIGURE 1 ). Eye stalks without pigmentation. Rostral plate black. Carapace marginally fringed with narrow black line. TS6–8 and AS 1–5 posterior margins each with narrow black line. Proximal segment and mesial margin of distal segment of uropodal exopod and endopod black. In life, telson with large white patch on median carina ( Ahyong & Naiyanetr 2000; Ahyong et al. 2008: figs. 57, 58).

Remarks. Okada et al. (2016) recorded C. japonica from Kochi Prefecture, south Shikoku Island, on the basis of 12 specimens including three collected by bottom trawlings at around 50–90 m in depth. Remaining nine were collected by yabby pumps from tidal flats. We re-examined all of the trawls’ specimens and six of tidal flats’ specimens in Okada et al. (2016) and found they do not belong to C. japonica . Two specimens (SINH-CR 1447 and 1455) collected by trawlings (Susaki fishing port) were identified as C. albolitura based on the aforementioned diagnostic characters, whereas a single specimen (SINH-CR 1848) also obtained by a trawling (Irino fishing port) was referred to Lenisquilla lata ( Brooks, 1886) . The remaining six specimens collected from the tidal flats were identified as Cloridina ichneumon ( Fabricius, 1798) instead (see Remarks of Cloridina ichneumon mentioned below).

Clorida albolitura is morphologically close to C. japonica , but distinguishable by the following characters ( Ahyong et al. 2008; this study): anterior part of eye peduncle stouter in C. albolitura ( Fig. 1C View FIGURE 1 ) than C. japonica ( Fig. 2D View FIGURE 2 ); anterolateral spines of carapace larger in C. albolitura ( Fig. 1B View FIGURE 1 ) than C. japonica ( Fig. 2A–C View FIGURE 2 ); teeth of raptorial claw dactylus more strongly elongated and curved appearance in C. albolitura ( Fig. 1D View FIGURE 1 ) than C. japonica ( Fig. 2E View FIGURE 2 ); TS5 lateral process (in posterior view) more slender and with stronger spine in C. albolitura ( Fig. 1E View FIGURE 1 ), instead of relatively smaller and triangular lobe in C. japonica ( Fig. 2F View FIGURE 2 ); and SM carinae on AS 1–3 distinct in C. albolitura ( Fig. 1F View FIGURE 1 ), but absent in C. japonica .

In fresh coloration, the presence of a median white patch on the telson is a useful diagnostic character of C. albolitura . However, it should be noted that a similar white spot is also observed in C. bombayensis ( Ahyong et al. 2008: figs. 60, 61) and C. japonica ( Fig. 2A View FIGURE 2 ).

In Ahyong & Naiyanetr (2000) and Ahyong (2001), C. albolitura was reported to be distributed in Japan, but this was later turned out to be a misinterpretation ( Hamano 2005: 57, his personal communication with Dr. Shane T. Ahyong). This study represents the first specimen-based record of C. albolitura from Japanese waters. The male specimen (SINH-CR 1447) is designated as the standard specimen for the new Japanese name (Tosa-meboso-shako) proposed here.

Distribution. Madagascar, eastern Mediterranean Sea (introduced), Red Sea, Andaman Sea, Gulf of Thailand (type locality), Vietnam, Taiwan and northern Australia ( Ahyong & Naiyanetr 2000; Ahyong & Galil 2006; Ahyong et al. 2008; Galil et al. 2009); now from Japan. In Japan, only known from Kochi Prefecture, southern part of Shikoku Island ( Fig. 11 View FIGURE 11 ).

Ecological note. Sand and mud substrates at 31–110 m in depth ( Ahyong 2001). Judging from the location of the trawler’s operation, the specimens examined were collected at depths of around 50–90 m (Y. Machida, personal communication with the third author). This is the deepest recorded species of Clorida in Japan.

Kingdom	Animalia
Phylum	Arthropoda
Class	Malacostraca
Order	Stomatopoda
Family	Squillidea
Genus	Clorida