Diolenius sarmiensis, Gardzińska, Joanna & Patoleta, Barbara, 2013

Gardzińska, Joanna & Patoleta, Barbara, 2013, A new species and records of Diolenius Thorell, 1870 (Araneae: Salticidae) from New Guinea, Zootaxa 3664 (1), pp. 63-68 : 64-68

Diolenius sarmiensis sp. nov.

( Figs 1–17 )

Type material. M Holotype, F Allotype, Paratypes: 5M, 1F, 1 juv. (BISHOP), New Guinea, Boden Sarmi District, 4-17.VII.1959, T. Maa.

Etymology. Named from the type locality.

Diagnosis. Spiders about 4–5 mm long. Compared to similar D. insignitus cephalothorax relatively broader (about 79% of CL), abdomen without transverse stripe of pallid hairs, palpal organ with embolus longer (arising at 6 o’clock) and tibial apophysis much broader, epigyne with insemination ducts parallel to each other and accessory glands relatively smaller. In comparison with D. paradoxus spermophore strongly meandering and basal flange of male palpal apophysa relatively smaller.

Description. Male holotype ( Figures 1–7 , 15–16 ). Carapace strongly papillate, dark brown, with lateral patches of pallid hairs behind PLE and distally. Clypeus, endites and labium somewhat paler than dorsal surface of cephalothorax. Sternum dark brown. Abdomen ovoid, not constricted, grey, with shiny, dark brown dorsal and ventral scuta. Spinnerets orange. Legs I brown, except of orange patellae and yellow tarsi, other legs orange, with dark brown pigmented lateral surfaces of femora, tibiae and metatarsi. Trochanters I slender and elongate, but shorter than femora and tibiae (67% of femora and 72% of tibiae I length), papillate, with strongly marked dorsal and ventral edges ( Fig. 1 , see arrow). Femora I with distinct retroventral edges ( Fig. 1 , see arrows). Tibiae I with ventral fringe of flattened stiff setae and two rows of ventral spines–of them the retroventral much shorter and slenderer than the proventral ones. Both rows of ventral spines on metatarsi I short. Leg I spination: tibia: 7+7, metatarsus: 5+5. Pedipalps brown with orange patellae. Palpal organ: embolus relatively long, simple, sabre-like, distally set on tegulum; part of spermophore translucent through tegulum strongly meandering; retrolateral tibial apophysis broad, with small, rather indistinct basal flange.

Dimensions. CL 2.40, CW 1.90, CH 1.40, AEW 1.75, PEW 1.78, EFL 1.50, AL 2.90, AW 1.85, LI 12.08 (1.25+1.80+2.70+1.00+2.50+2.15+0.68).

Female allotype ( Figures 8–14 , 17 ). Carapace brown, darker in eye field, with patches of fine, pallid hairs similar to male and numerous papillae. Clypeus, chelicerae, endites and labium pale brown. Sternum brown. Abdomen ovoid, dark grey, with indistinct colour pattern. Venter grey, darker on sides. Spinnerets yellow. Legs I pale brown, except of yellow patellae, tips of tibiae and whole tarsi; other legs yellow, with brown pigmented lateral surfaces. Trochanters I longer than coxae I, but markedly shorter than femora and tibiae I (53% of femora and 58 % of tibiae I length). Tibiae I with two rows of strong and long ventral spines and the fringe of dense setae. Ventral spines on metatarsi I long. Leg I spination: tibia: 7+7, metatarsus: 5+5. Epigyne: lateral wings broad, insemination ducts parallel to each other, proximal parts relatively narrow, spermathecae distinctly larger than distal chambers of insemination ducts, channels relatively wide, accessory glands small, located as in Figs 14 , 17 . Dimensions. CL 2.40, CW 1.80, CH 1.20, AEW 1.70, PEW 1.75, EFL 1.50, AL 2.43, AW 1.38, LI 9.20 (0.90+1.15+2.15+0.85+2.00+1.60+0.55).

Diolenius albopiceus Hogg, 1915

Material. 1F (BISHOP, 227), New Guinea, Western District, Oriomo, 29.X.1960, J.L. Gressitt.

Diolenius armatissimus Thorell, 1881

Material. 1M (BISHOP, 219), New Guinea, Netherlands, Waris, VII-VIII. 1959, T.C. Maa.

Diolenius phrynoides (Walckenaer, 1837)

Material. 1F (BISHOP, 250), New Guinea, Netherlands, Vogelkop, Kabar, 550m, 13.I.1962, L. & S. Quate; 1 F (BISHOP, 144), New Guinea, Netherlands, 10.VI.1962, Holtmann jungle.

Acknowledgments

We are grateful to Dr. L. Baert (RBINS) for providing the material and to Prof. M. Żabka for critical remarks on the text.

Figures

FIGURES 1 – 7. Diolenius sarmiensis sp. nov., male holotype. 1 general appearance, dorsal view, with femur I and trochanter I from ventral view; 2 – 3 general appearance, ventral and lateral views; 4: cephalothorax, frontal view; 5 – 6 palpal organ, ventral and retrolateral views; 7 leg I, retrolateral view. Scale bars 1 – 3, 7: 1 mm; 6: 0.2 mm.

FIGURES 8 – 14. Diolenius sarmiensis sp. nov., female allotype. 8 – 9 general appearance, dorsal and lateral views; 10 cephalothorax, frontal view; 11 leg I, retrolateral view; 12 venter; 13 – 14 epigyne and its internal structures. Scale bars 8 – 11: 1 mm; 14: 0.2 mm.

FIGURES 15 – 17. Diolenius sarmiensis sp. nov., male and female copulatory organs. 15 – 16 male holotype palpal organ, ventral and retrolateral views; 17 female allotype internal structures of epigyne. Scale bars: 0.2 mm.