Xyphinus deelemanae, Kranz-Baltensperger, 2014

Kranz-Baltensperger, Yvonne, 2014, The goblin spider genus Xyphinus (Araneae; Oonopidae), Zootaxa 3870 (1), pp. 1-79 : 37-41

Xyphinus deelemanae sp. nov.

( Figs 29-32 ; map 3 )

Type material. Holotype: male ( PBI _ OON 00032567 ) MALAYSIA: Sarawak, Mulu National Park , 100 km SEE of Miri, N 4°00’, E 14°49’, 200 m; 19.–24.VIII.2003, leg. A. Schulz (Winkler-extraction), MHNG . Paratypes: 1 male and 1 female ( PBI _ OON 12540), collected with holotype, MHNG . 2 females ( PBI _ OON 00031876 ), MALAYSIA: Sarawak, Miri , Niah, N.P., primary forest on limestone, leaf litter, 16.IV.1998, leg C.L. Deeleman, RMNH .

Etymology. The specific name is a patronym in honor of Christa Deeleman, who collected and described countless oonopid specimens.

Diagnosis. With its strongly projecting abdomen X. deelemanae sp. nov. is similar to X. gibber and X. montanus , but can be distinguished from both by the presence of microsculpture on the palpal patella and tibia and the long apophysis ( Fig. 30A–H ). The female epigastric area consists of a short triangular protrusion ( Figs 31B, E, F ; 32A–D ).

Description. Male. Total length 1.70 mm. Carapace: Orange-brown, broadly oval in dorsal view, slightly elevated in lateral view, anteriorly narrowed to 0.49 times its maximum width or less, with angular posterolateral corners, posterolateral edge without pits, anterolateral corners with slightly sclerotized triangular projections, posterolateral surface without spikes ( Fig. 29A, B, E ), surface of pars cephalica and sides smooth, fovea present. Lateral margin with tiny, blunt denticles. Clypeus: Straight in frontal view, sloping forward in lateral view, high, ALE separated from edge of carapace by their radius or more ( Fig. 29E ). Eyes: PME largest, ALE and PLE oval, PME squared. Posterior eye row straight from above, procurved from front. ALE separated by their radius to diameter, ALE and PLE separated by less than ALE radius, PLE and PME separated by less than PME radius, PME touching ( Fig. 29A, E ). Sternum: As long as wide, sickle-shaped structures not touching. Radial furrows opposite coxae III absent. Surface smooth. Mouthparts: Chelicerae slightly divergent, with swelling on anterior face, setae evenly scattered, promargin with microsculpture ( Fig. 29G, H ). Labium rectangular, indented at middle, with 3-5 setae on anterior margin. Abdomen: Frontally strongly narrowed, overlapping carapace, almost reaching highest point of carapace ( Fig. 29B ). Book-lung covers narrow ovoid and elongated. Scuto-pedicel region with one Wshaped and three slightly oval and elevated scutal ridges with elongated setae ( Fig. 29B, D, F ). Dorsal scutum orange brown, middle surface and sides smooth, anterior half with projecting blunt denticles ( Fig. 29A, B ). Dorsal scutum embedding narrow tip of abdomen ( Fig. 29B, D ). Epigastric scutum not protruding. Postepigastric scutum without short posteriorly directed lateral apodemes. Posterior spiracles connected by groove. Legs: Metatarsi of legs III and IV with harpoon-like hairs. Tibia with three, metatarsi with one trichobothria each. Genitalia: Sperm pore large, situated at level of anterior spiracles. Trochanter normal size, unmodified. Femur one to two times as long as trochanter, attaching to patella subbasally; patella shorter than femur, with microsculpture on prolateral surface, tibia one and a half times as long as patella, with microsculpture on prolateral side, with three trichobothria. Cymbium pale orange, ovoid in dorsal view, not fused with bulb, bulb pale orange, 1 to 1.5 times as long as cymbium, distal part of bulb strongly sclerotized. Thin, membranous ribbon retrolaterally, as long as bulb. Roundish, membranous apophysis prolaterally. Dark, sclerotized structure visible in between ( Fig. 30A–H ).

Female. Total length 1.89 mm. Carapace: Fovea absent. Clypeus vertical in lateral view. Mouthparts: Anterior face of chelicerae with small swelling ( Fig. 31C ). Female palp spineless, femora with two strong, spine-like hairs ventrally, tibia with three trichobothria and few stronger setae prolaterally. Abdomen: Epigastric scutum strongly protruding ( Fig. 31C ). Genitalia: Epigastric furrow narrow. Dark, sclerotized, triangle-shaped, strongly protruding structure visible, slightly elongated posteriorly ( Figs 31B, E, F ; 32A–D ).

Figures

MAP 3. Records of X. deelemanae sp. nov. (star), X. acutus sp. nov. (triangles), X. sabal sp. nov. (circle) and X. krabi sp. nov. (squares).

FIGURE 29. Xyphinus deelemanae sp. nov., male. A, habitus, dorsal view; B, habitus, lateral view; C, carapace, ventral view; D, abdomen, ventral view; E, carapace, anterior view; F, abdomen, anterior view; G, chelicerae, promargin, SEM; H, chelicerae, promargin. Scale bars A, B = 1 mm; C, D, E, F = 0.5 mm; G = 0.01 mm; H = 0.1 mm.

FIGURE 30. Xyphinus deelemanae sp. nov., male. A, C, left palp, prolateral view; B, D, same, retrolateral view; E, same, ventral view; F, left palp, prolateral view (long apophysis not expanded); G, patella and tibia of left palp, prolateral view; H, left palp, prolateral view, SEM. Scale bars = 0.1 mm.

FIGURE 31. Xyphinus deelemanae sp. nov., female. A, habitus, dorsal view; B, habitus, ventral view; C, habitus, lateral view; D, carapace, anterior view; E, abdomen, ventral view; F, abdomen, ventral view, SEM; G, abdomen, anterior view. Scale bars A, B, C = 1 mm; D–G = 0.5 mm.

FIGURE 32. Xyphinus deelemanae sp. nov., female. A, C, epigastric area, ventral view; B, D, same, dorsal view. Scale bars 0.1 mm.