Pilumnopeus convexus ( Maccagno, 1936 )

Trivedi, Jigneshkumar, Mitra, Santanu, Patel, Pooja, Maheta, Niketa, Patel, Krupal & Ng, Peter K. L., 2021, On the Indian species of Eurycarcinus A. Milne-Edwards, 1867, Heteropanope Stimpson, 1858, and Pilumnopeus A. Milne-Edwards, 1867 (Decapoda: Brachyura: Pilumnidae), Nauplius (e 2021004) 29, pp. 1-18 : 9

Pilumnopeus convexus ( Maccagno, 1936)

( Figs. 5 , 10A–C )

Heteropanope convexa Maccagno, 1936: 176 , 177.

Pilumnopeus salomonensis Ward, 1942: 96 , pl. 6 fig. 11; Davie, 1989: 143; Ng et al., 2008: 141 (list).

Pilumnopeus vauquelini — Stephensen, 1946: 141, fig 35a, b; Guinot, 1967: 275; Basson et al., 1977: 228, 231; Titgen, 1982: 252 (list); Hornby, 1997: 15; Naderloo and Türkay, 2012: 37 [not Pilumnus vauquelini Audouin, 1826 = Pilumnopeus vauquelini (Audouin, 1826) ].

Pilumnopeus indica — Barnard, 1955: 30, fig. 12 [not Heteropanope indica De Man, 1887 = Benthopanope indica (De Man, 1887) ].

Pilumnopeus convexa — Davie, 1989: 142, 143, fig. 7A–C.

Pilumnopeus convexus — Cooper, 1997: 171–173, figs. 6, 16; Apel, 2001: 98; Ng et al., 2008: 141 (list); Naderloo and Türkay, 2012: 37 ; Ghory et al.,2013: 301–312, figs. 1–5; Naderloo et al., 2013: 449, tab. 1; Gosavi et al., 2017:429–433, figs. 2–7; Naderloo, 2017: 311, figs. 26.21, 26.22a, 26.23.

Type locality. Ethiopia.

Material examined. 1 male (CW 15.3 mm; CL 11.3 mm), 2 females (CW 11.9 mm; CL 8.4 mm; CW 12.8 mm; CL 8.6 mm), LFSc.ZRC-70, Kuda (21°37’33”N 72°18’17”E), Gujarat State, India, 12 October, 2016, coll. J. Trivedi : 1 male (CW 9.6 mm; CL 6.4 mm), 1 female (CW 5.9 mm; CL 4.3 mm), ZRC 2012.0422 , Somar Goth , Pakistan, 26 January 2009, coll. F. Ghory ; 1 female (CW 8.7 mm; CL 5.9 mm) ZRC 2018.0067 , Buleii , Pakistan, 4 March 1986, coll. Q. Kazmi ; 1 female (CW 14.4 mm; CL 9.8 mm) (paralectotype of Pilumnopeus salomonensis Ward, 1942 ), ZRC 2012.0794 , Salomón Islands , Chagos Archipelago, 1936, coll. R. Viader and G. Antelme ; 2 males (CW 9.0 mm; CL 6.3 mm; CW 8.0 mm; CL 5.6 mm) ZRC 2018.1364 , Persian Gulf , Iran, May 2010, coll. M. Safaei.

Remarks. The specimens examined ( Figs. 5 , 10A–C ) in the present study compared well with the description and figures in Ghory et al. (2013). Pilumnopeus convexus is close to P. serratifrons but varies from the latter in having a CW/CL ratio of 1.4 to 1.5 and a less projecting front with a shallow central notch ( Davie, 1989). The specimens were collected ( Figs. 6 , 11D–F) from Ekkakula mangroves located in Odisha State.

The species is so far reported from South Africa, Red Sea, Gulf of Aden, Persian Gulf, and Gulf of Oman ( Naderloo, 2017). In India, the species was recorded from Gujarat ( Gosavi et al., 2017) located on the west coast of India.

Figures

Figure 5. Pilumnopeus convexus (Maccagno, 1936), male (CW 15.3 mm, CL 11.3 mm) (LFSc.ZRC-70), Kuda, India. A, habitus, dorsal view; B, chelae, outer view; C, anterior thoracic sternum (sternites 1–4) and pleon; D, posterior thoracic sternum and pleon.

Figure 6. Heteropanope glabra Stimpson, 1858, male (CW 14.4 mm, CL 10.1 mm) (LFSc.ZRC-66), Ghogha mangroves, India. A, habitus, dorsal view; B, chelae, outer view; C, anterior thoracic sternum (sternites 1–4) and pleon; D, posterior thoracic sternum and pleon.

Figure 10. A–C, Pilumnopeus convexus (Maccagno, 1936), male (CW 15.3 mm, CL 11.3 mm) (LFSc.ZRC-70), Kuda, India; D–F, Heteropanope glabraStimpson,1858, male (CW 14.4mm, CL10.1 mm) (LFSc.ZRC-66), Ghoghamangroves,India; G–I, Aniptumnus quadridentatus (De Man, 1895), male (CW 13.9 mm; CL 9.6 mm) (ZSI-C1503/2) Matla River, India (lectotype of Heteropanope neolaevis Deb, 1995). A, D, G, ventral view of left G1; B, E, H, ventral view of distal part of left G1; C, F, I, left G2.