Austruca albimana ( Kossmann, 1877 )

Shih, Hsi-Te, Prema, Mani, Kumar, Austin Anand Jeya, Saher, Noor Us, Ravichandran, Samuthirapandian, Odhano, Sahir & Paulay, Gustav, 2022, Fig. 9 in Fig. 1 in Fig. 20. A-E in Establishment of A New Bornean Genus of Gecarcinucidae (Crustacea: Brachyura), with Descriptions of Five New Species., Zoological Studies 61 (65), pp. 1-18 : 3-6

Austruca albimana ( Kossmann, 1877) ( Fig. 2A, B )

Gelasimus annulipes var. albimana Kossmann, 1877: 53 (type locality: Red Sea); Crane 1975: 298.

Uca annulipes – Nobili 1906a: 312; Nobili 1906b: 150; Maccagno 1928: 35, fig. 20; Hornby 1997: 14 [part?].

Uca (Celuca) lactea annulipes – Crane 1975: 298, 611 [part]; Lewinsohn 1977: 61.

Uca lactea albimana – Price et al. 1987: 456.

Uca albimana – Yamaguchi 1994: 153; Shih et al. 2009: 376; Shih et al. 2013: 643.

Uca annulipes albimana – Apel and Türkay 1999: 133; Simões et al. 2001: 86.

Uca (Paraleptuca) albimana – Ng et al. 2008: 241.

Uca (Austruca) albimana – Naderloo et al. 2010: 4, figs. 1a–l, 4a, 6a, b; Naderloo et al. 2015: 409; El-Sayed et al. 2016: 7, pls. 3A, B, 4A, D, G, J.

Austruca albimana – Shih et al. 2016: 153, 168; Naderloo 2017: 412, figs. 37.10, 37.13a; Baakdah 2018: 51; AAJ Kumar 2019: 53, figs. 2g –i, 3a–d; Sasaki 2019: 12423.

Austruca (Austruca) albimana – Rosenberg 2019: 734.

Material examined: Egypt: 2 òò (15.3, 15.2 mm)

(NCHUZOOL 13242), Nabq-El Arwashie, Sinai, Red Sea, coll. S. Barbaresi et al., 14 Oct. 2004. Saudi Arabia: 3 òò (10.4–12.1 mm) (NCHUZOOL 15085), 1 ñ (9.7) (NCHUZOOL 15002), 1 ñ (11.8 mm) (NCHUZOOL 15003), Al Darb (17 °26'53.4"N, 42°17'03.3"E), coll. A. J. Kumar, 25 Apr. 2017. Oman: 1 ò (11.8 mm) ( UF 7790), Bar al Hikman Peninsula, coll. V. Bonito and G. Paulay, 22–24 Jan. 2005; 1 ò (17.2 mm) ( UF 7789), Bar Al Hikman Peninsula, coll. V. Bonito and G. Paulay, 22–24 Jan. 2005; 1 ò (not measured) ( UF 58686), Bandar Al Khiran sand flat (23.50856°N, 58.73186°E), coll. S. Brown, D. Uyeno, G. Koblasova and M. Cherneva, 26. Jan. 2020.

Distribution: Egypt (Red Sea), Saudi Arabia (Red Sea), Eritrea, Djibouti, Yemen (including Socotra), Oman and UAE.

Remarks: Because the Red Sea is semi-enclosed, Austruca albimana was thought to be endemic to this area ( Shih et al. 2009). However, Naderloo et al. (2010) and Naderloo (2017) extended its distribution to the southern coast of the Gulf of Oman and the Arabian/ Persian Gulf ( Oman and UAE). Comparisons of COI sequences from specimens from central Oman (Barr al Hikman) and the Red Sea demonstrate genetic connectivity across this area ( Fig. 4 ).

Figures

Fig. 2. Dorsal view of carapace and frontal view of major cheliped. Austruca albimana (A, B, NCHUZOOL 13242, CW 15.2 mm, Egypt); A. annulipes (C, NCHUZOOL 13642, CW 17.4 mm, Pakistan; D, NCHUZOOL 15088, CW 19.4 mm, Pakistan); A. iranica (E, F, NCHUZOOL 15090, CW 16.4 mm, Iran); A. sindensis (G, H, NCHUZOOL 13642, CW 17.4 mm, Pakistan).

Fig. 4. COI neighbor-joining tree for fiddler crabs studied, with bootstrap support values (only> 50% shown).