Stagetillus opaciceps Simon, 1885

Maddison, Wayne P., Beattie, Imara, Marathe, Kiran, Ng, Paul Y. C., Kanesharatnam, Nilani, Benjamin, Suresh P. & Kunte, Krushnamegh, 2020, A phylogenetic and taxonomic review of baviine jumping spiders (Araneae, Salticidae, Baviini), ZooKeys 1004, pp. 27-97 : 27

Stagetillus opaciceps Simon, 1885 Figs 8 , 15 , 16 , 23 , 31 , 143-150

Stagetillus opaciceps Simon, 1885: 32.

Note.

Prószyński’s (1987) illustrations of Simon’s type specimen characterize the male well. Two additional males illustrated here (Figs 143-147 ) are conspecific or at least very close (the male from Brunei, Figs 146 , 147 , has a slightly narrower embolus). Females of the species have not been reported, although we now tentatively identify, as the female of S. opaciceps , the specimen MRB079 from Ulu Gombak used by Maddison et al. (2014) for molecular phylogeny (Figs 148-150 ). That the female is a Stagetillus is suggested by its similarities to the male in size and body form, carapace shape, yellow coloration, and visibility of the ocular digestive diverticulum. The modest ECP and epigynal openings are what might be expected from the small simple RTA and embolus of the known male of S. opaciceps . Given that Ulu Gombak is only 70 km from a known male of S. opaciceps (Figs 143 , 144 ), the match of the Ulu Gombak female to S. opaciceps is credible. We therefore label the female, used here for molecular data, as S. cf. opaciceps (Figs 148-150 ). In WPM’s lab notebooks the informal code for the female was “STULG”.

Material examined.

Male (specimen JK.13.02.26.0017, in LKCNHM) Malaysia: Negeri Sembilan, Hutan Lipur Ulu Bendul, 2.73°N, 102.0789°E, J. K. H. Koh 26 February 2013; Male (JK.08.08.19.0001, in LKCNHM) Brunei: Belait, Disturbed forest off Labi Road, 4.5858°N, 114.5067°E, J. K. H. Koh 19 August 2008. Female (specimen MRB079, in UBCZ) Malaysia: Selangor: Ulu Gombak Field Station. 3.325°N, 101.753°E, 250 m el. 16-19 May 2005. W. Maddison, D. Li, I. Agnarsson, J. X. Zhang, WPM#05-026.

Figures

Figures 4 - 35. Variation in traits among baviines 4, 5 oblique views of female prosoma 4 Bavia nessagyna (specimen IDWM. 20004; note convex front face of chelicerae, and typical thorax) 5 Indopadilla redunca (holotype IDWM. 20011; note concave front face of chelicerae, and thoracic bulges) 6 - 12 left male endite (9 also with chelicera) 6 Bavia nessagyna (holotype IDWM. 20005) 7 Indopadilla redunca (specimen SWK 12 - M 0009) 8 Stagetillus opaciceps (specimen JK. 08.08.19.0001) 9 Padillothorax semiostrinus (specimen JK. 20.06.20.001) 10 Padillothorax badut (specimen SWK 12 - 4688) 11 Maripanthus jubatus (specimen AS 19.4373) 12 Piranthus planolancis (specimen AS 19.5970) 13 - 20 carapace (all females except 15) 13 Bavia nessagyna (specimen IDWM. 20004) 14 Indopadilla redunca (holotype IDWM. 20011) 15 Stagetillus opaciceps male (specimen JK. 13.02.26.0017) 16 Stagetillus cf. opaciceps female (specimen MRB 079). 17 Padillothorax semiostrinus (specimen JK. 20.06.20.001) 18 Padillothorax mulu (from Mulu Nat. Pk.) 19 Maripanthus reinholdae (specimen SWK 12 - 1934) 20 Piranthus planolancis (specimen AS 19.5940) 21 - 28 Metatarsus of first leg, retrolateral view. All female except 24 male. All are of left legs except 23, 25, 28 which are of right leg, digitally flipped 21 Bavia nessagyna (specimen IDWM. 20004) 22 Indopadilla kahariana (specimen SWK 12 - 1876) 23 Stagetillus cf. opaciceps (specimen MRB 079) 24 Padillothorax semiostrinus (specimen SWK 12 - EP 0105) 25 Padillothorax mulu (specimen SWK 12 - EP 0105) 26 Maripanthus reinholdae (specimen SWK 12 - 1934) 27 Maripanthus draconis (from Gunung Belemut, Johor) 28 Piranthus planolancis (specimen AS 19.5940) 29 - 35 prolateral surface of male first leg femur. 29 Bavia cf. capistrata (specimen from Singapore) 30 Indopadilla kahariana (specimen from Lambir Hills Nat. Pk.) 31 Stagetillus opaciceps (specimen JK. 08.08.19.0001) 32 Padillothorax semiostrinus (specimen JK. 20.06.20.001) 33 Padillothorax badut (specimen SWK 12 - 4688) 34 Maripanthus draconis (specimen from Johor, Gunung Lambak) 35 Piranthus bakau (holotype). Scale bars: 0.1 mm (6 - 12, 21 - 35), 1.0 mm (4, 5, 13 - 20).

Figures 143 - 150. Stagetillus opaciceps male, and a female tentatively identified as S. opaciceps. 143 Male left palp, ventral view (specimen JK. 13.02.26.0017) 144 same, retrolateral view of tibia 145 living male from Belait, Brunei (photograph Joseph Koh 2019) 146, 147 male (specimen JK. 08.08.19.0001) 148 female epigyne (specimen MRB 079), ventral 149 vulva, dorsal 150 living female. Scale bars: on genitalia 0.1 mm; on bodies 1.0 mm.