Sadies, WANLESS, 1984

Benjamin, Suresh P., 2004, Taxonomic revision and phylogenetic hypothesis for the jumping spider subfamily Ballinae (Araneae, Salticidae), Zoological Journal of the Linnean Society 142 (1), pp. 1-82 : 44-49

SADIES WANLESS, 1984

Sadies Wanless, 1984: 11 .

Type species: Sadies fulgida Wanless, 1984 , by original description.

Monophyly and phylogenetic placement: Apomorphic for Sadies is the C-shaped path of the sperm duct (6-0), position of cag (17-1), absence (secondary loss) of enlarged tibia (31-0) and lts (33-0) and presence of leaf-like prosomal scales (37-1).

Diagnosis: Sadies can be separated from all other Ballinae genera by the position of cag ( Figs 45C , 46A, B ) and, except for Cynapes wrighti , by the presence of leaf-like prosomal scales ( Fig. 47A, B ).

Description: See Wanless (1984a). Composition: Four species: S. fulgida Wanless, 1984 , S. gibbosa Wanless, 1984 , S. seychellensis Wanless, 1984 and S. trifasciata Wanless, 1984 .

Distribution: All known species occur in the Seychelles and are probably endemic.

SADIES FULGIDA WANLESS, 1984

( FIGS 45A, B, C- F , 46A, B , 47A- H )

Sadies fulgida Wanless, 1984 : figs 2a–f, 3a–f. 1♂ holotype ( MRAC 159.955 ) and 1♀ allotype ( MRAC 143.086 ) from Seychelles, Mahé, examined.

Diagnosis: Distinguished from S. seychellensis and S. trifasciata by the shape of the rta ( Fig. 45B, G, H ); the rta of S. fulgida has a broad base constricted at the centre and with a pointed end ( Figs 45A, B , 47A, H ; Wanless, 1984a: figs 2, 3). Wanless (1984a) proposed ‘the shape of the carapace and its microsculpture’ as unique for S. seychellensis . However, he provided no details of what he meant by these differences. The separation from S. gibbosa is unclear, but the shape of the rta and the enlarged tibia I are potentially useful ( Wanless, 1984a: fig. 4).

Description: See Wanless (1984a).

Distribution: Known only from the Seychelles. Habitat data in Wanless (1984a).

Material examined: SEYCHELLES, Silhouette , La Passe; 1♂, 15.1.1999, leg. and det. Michael Saaristo, MZT (label: S. seychellensis , misidentification) .

SADIES SEYCHELLENSIS WANLESS, 1984

( FIG. 45G )

‘Myrmarachne’ constrictus (Blackwall, 1877). See Saaristo (1978: figs 100–102; provisional placement and first description of the male). Not examined.

S. seychellensis Wanless, 1984: 18–20 , fig. 5a–f. ♂ holotype ( BMNH.1952.12.17.118–122) from Seychelles, Mahé. Not examined. Paratypes : 1♂ 1♀ ( MRAC 143.283 ), Morné Séchellois , 750–800 m, 13– 17.7.1972, forét endémique ; 1♀ ( MRAC 143.084 ), Mahé Centre , Morne Blanc, 667 m, 24– 25.8.1972, forét endémique. Examined .

Diagnosis: Distinguished from S. fulgida and S. trifasciata by the shape of the rta ( Fig. 45B, G, H ), which in S. seychellensis gradually tapers to a pointed end ( Fig. 45H ; Wanless, 1984a: fig. 5). Wanless (1984a) proposed the absence of a thoracic hump and ‘differences in carapace microsculpture’ (though he provided no details of what he meant by the latter) as unique to S. seychellensis . However, I think a thoracic hump is present, though only faintly visible (pp in this study). The separation from S. gibbosa is unclear, but the shape of the rt and the enlarged tibia I might be of use ( Wanless, 1984a: fig. 4).

Description: See Wanless (1984a).

Distribution: Known only from the Seychelles. Habitat data in Wanless (1984a).

Other material examined: None.

SADIES TRIFASCIATA WANLESS, 1984

( FIG. 45H )

Sadies trifasciata Wanless, 1984: 21–22 , fig. 6a–g. ♂ holotype from Seychelles, Mahé, Centre , Morne Blanc 667 m, 8– 9.7.1972, PLG Benoit & JJ Van Mol ( MRAC 150.961 ) and three from the same locality ( MRAC 143.093 ), examined.

Diagnosis: Distinguished from S. fulgida , S. seychellensis and S. gibbosa by the colour pattern and shape of rta ( Fig. 45B, G, H ); S. trifasciata has a unique 3-lined pattern on the opisthosoma, a broadbased rta tapering to a beak-like end, which is constricted approximately halfway ( Wanless, 1984a: fig. 6a–c).

Description: See Wanless (1984a).

Distribution: Known only from the Seychelles. Habitat data in Wanless (1984a).

Other material examined: None.

Figures

Figure 45. Sadies spp. A-F, S. fulgida from Mahe, Seychelles (male: MRAC 159.955; female: MRAC 143.086). A, left male palp, ventral view. B, same, retrolateral view. C, epigynum, ventral view. D, habitus, lateral view. E, leg I, lateral view. F, habitus, ventral view. G, S. trifasciata, retrolateral view of left male palp. H, S. seychellensis, retrolateral view of left male palp. Scale bars = 0.1 mm (C); 0.2 mm (A, B, G, H); 2.0 mm (D-F).

Figure 46. Female genitalia of Sadies fulgida from Mahe, Seychelles (MRAC 143.086). A, ventral view. B dorsal view. Scale bars = 0.1 mm.

Figure 47. ESEM, Sadies fulgida from Seychelles, Silhouette, La Passe (MZT). A, prosoma, dorsal view. B, leaf-like prosomal scales. C, distal part of the palp, retrolateral view. D, st, ec and embolus, retrolateral view. E, embolus tip, retrolateral view. F, details of the rta, retrolateral view. G, proximal part of the palp, retrolateral view. H, tibia I, ventrolateral view. Scale bars = 10 Mm (D, E); 30 Mm (B, C, F); 50 Mm (G, H); 100 Mm (A).