Clorida, Eydoux & Souleyet, 1842

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 : 521

Key to the Japanese species of Clorida and Cloridina in this study

1. Second segment of A2 peduncle not extending anteriorly beyond eye ( Fig. 9A ). Posterior half of proximal segment of uropodal exopod black ( Fig. 9G )................................................... Cloridina ichneumon ( Fabricius, 1798)

- Second segment of A2 peduncle clearly extending anteriorly beyond eye (e.g. Fig. 1B )………………………… Clorida .... 2

2. Mandibular palp (e.g., Fig. 5F ) present.................................................................... 3

- Mandibular palp absent................................................................................ 5

3. Carapace anterolateral spines minute or absent ( Fig. 5A–C ). Telson teeth short, rounded ( Fig. 5M, N )............................................................................................... C. rotundicauda ( Miers, 1880)

- Carapace anterolateral spines distinct. Telson teeth relatively long, sharp......................................... 4

4. Raptorial claw dactylus with basal notch on extensor margin ( Fig. 1D ). TS5 lateral process forming acute spine ( Fig. 1E )....................................................................... C. albolitura Ahyong & Naiyanetr, 2000

- Raptorial claw dactylus without basal notch on extensor margin ( Fig. 2E ). TS5 lateral process with triangular lobe (in posterior view) ( Fig. 2F ).................................................................. C. japonica Manning, 1978

5. Raptorial claw dactylus with 3 or 4 teeth (if 4 teeth present, proximalmost tooth minute) ( Fig. 3E, F ). A2 scale black ( Figs. 3A , 4 )................................................................... C. denticauda Garcia & Manning, 1982

- Raptorial claw dactylus with 4 well-formed teeth ( Fig. 7E ).................................. C. seversi Moosa, 1973

Figures

FIGURE 1. Clorida albolitura Ahyong & Naiyanetr, 2000. SINH-CR 1447, male, TL 74.0 mm, photographed after about 19 years preservation in ethanol. A, entire body, dorsal view; B, anterior cephalothorax, dorsal view, distal margin of second segment of A2 peduncle (arrow); C, same, right lateral view, anterior tip of A1 somite dorsal process (arrow); D, right raptorial claw, lateral view; E, TS5, right posterolateral view, lateral lobe (arrow); F,AS1–6, right lateral view; G, AS6, uropod and telson, ventral view; H, same, dorsal view. Scale bars: 5 mm. Photograph credit: H. Nakajima.

FIGURE 2. Clorida japonica Manning, 1978. A, OMNH-Ar-12752, female, TL about 50 mm, photographed while alive; B, RUMF-ZC-7277, male, TL 45.1 mm, photographed after freezing; C–H, RUMF-ZC-7436, male, TL 66.1 mm, photographed after about 4 years preservation in ethanol. A–C, entire body, dorsal view; D, anterior cephalothorax, right lateral view, anterior tip of A1 somite dorsal process (arrow); E, right raptorial claw, lateral view; F, TS5, right posterolateral view, lateral lobe (arrow); G, AS6, uropod and telson, dorsal view; H, same, ventral view. Scale bars: 5 mm. Photograph credits: T. Watanabe (A), H. Nakajima (B–H).

FIGURE 3. Clorida denticauda (Chhapgar & Sane, 1967). A–E, G, RUMF-ZC-6651, male, TL 70.3 mm; F, H, KAUM-AT- 1108, female, TL 77.9 mm. Photographed after preservation in ethanol. A, anterior cephalothorax, dorsal view; B, same, right lateral view, anterior tip of A1 somite dorsal process (arrow); C, TS5, right posterolateral view, lateral lobe (arrow); D, right TS5–7, dorsal view; E, F, right raptorial claw, lateral view; G, H, TS5–6, uropod and telson, dorsal view. Scale bars: 5 mm. Photograph credit: H. Nakajima.

FIGURE 4. Clorida denticauda (Chhapgar & Sane, 1967). A, RUMF-ZC-6651, male, TL 70.3 mm; B, RUMF-ZC-6673, male, TL 51.9 mm; C, D, RUMF-ZC-7000, male, TL 65.8 mm; E, KAUM-AT-1108, female, TL 77.9 mm. A–C, entire body, dorsal view, photographed after anesthesia by clove oil; D, entire body, right lateral view, photographed while alive; E, entire body, dorsal view, photographed after freezing. Scale bars: 5 mm. Photograph credits: H. Nakajima (A–D), KAUM (E).

FIGURE 5. Clorida rotundicauda (Miers, 1880). A, D, F, G, I–M, RUMF-ZC-7424, male, TL 89.5 mm; B, E, N, RUMF- ZC-7433, female, TL 92.3 mm; C, H, RUMF-ZC-7432, male, TL 62.6 mm. Photographed after preservation in ethanol. A–C, anterior cephalothorax, dorsal view; D, E, anterior cephalothorax, right lateral view, A1 somite dorsal process (arrows); F, left mandibular palp (arrow); G, H, right raptorial claw, lateral view; I, right TS5–7, dorsal view; J, right TS5, posterolateral view, lateral lobe (arrow); K, AS6, uropod and telson, right lateral view; L, uropod and telson, ventral view; M, N, AS6, uropod and telson, dorsal view. Scale bars: 5 mm. Photograph credit: H. Nakajima.

FIGURE 7. Clorida seversi Moosa, 1973. RUMF-ZC-7448, male, TL 49.7 mm, Photographed after 1 year preservation in ethanol. A, anterior cephalothorax, dorsal view; B, same, right lateral view, A1 somite dorsal process (arrow); C, right TS5, posterolateral view, lateral lobe (arrow); D, right TS5–7, dorsal view; E, right raptorial claw, lateral view; F, AS6, uropod and telson, dorsal view; G, same, ventral view; H, same, right lateral view. Scale bars: 2 mm (A–D), 5 mm (E–H). Photograph credit: H. Nakajima.

FIGURE 9. Cloridina ichneumon (Fabricius, 1798). RUMF-ZC-7661, male, TL 72.8 mm. A, anterior cephalothorax, dorsal view, distal margin of second segment of A2 peduncle (arrow); B, same, right lateral view, A1 somite dorsal process (arrow); C, right, mandibular palp (arrow); D, right raptorial claw, lateral view; E, right TS5–8, dorsal view; F, right TS5, posterolateral view, lateral lobe (arrow); G, AS6, uropod and telson, dorsal view; H, same, right lateral view. Scale bars: 5 mm. Photograph credit: H. Nakajima.