Antoonops sarae, Fannes, Wouter, 2013

Fannes, Wouter, 2013, Two new species of the spider genus Antoonops (Araneae: Oonopidae), with a key to the known species, Zootaxa 3709 (6), pp. 524-542 : 534-542

Antoonops sarae n. sp.

( Figs. 10–16 , 17 D)

Type material. CAMEROON: Adamaoua: holotype female, Tchabal Mbabo, 7°25’N, 12°49’E, 1500 m, April 11, 1983, hand catch, litter in gallery forest near mountain stream, R. Bosmans (MRAC 241.395, PBI_OON 32985). Paratype: 1 female, same locality, 1200 m, April 8, 1983, hand catch, litter in gallery forest, R. Bosmans (MRAC 241.396, PBI_OON 32986).

Other material examined. CAMEROON: Adamaoua: 2 females, same data as paratype, used in part for SEM (MRAC 241.397, PBI_OON 32982).

Etymology. Named after my sister-in-law, Sara Verpooten, in recognition of her support. Diagnosis. Females can be recognized by the long postepigastric scutum that leaves less than 1/4 of the

abdomen length uncovered ( Fig. 10 E). They can also be recognized by their genitalia ( Figs. 10 F, 15, 16). Description. Male. Unknown.

Female ( Figs. 10–16 , 17 D). TL 1.44. Habitus as in Fig. 10 A. Cephalothorax: Carapace brown, without any pattern, ovoid in dorsal view, completely covered by microsculpture except anterior part of dorsal surface, thorax without depressions or radiating rows of pits, posterolateral edge without pits, posterior margin not bulging below posterior rim, posterolateral surface without spikes; lateral margin straight, rebordered ( Figs. 10 B, 11A, B). Clypeus sinuous in front view, high, ALE separated from edge of carapace by their radius or more, median projection absent ( Fig. 11 D). Six eyes, small; ALE-ALE: separated by more than their diameter; ALE-PLE: separated by less than PLE radius; PME-PME: almost touching; PLE-PME: separated by PME diameter; posterior eye row recurved in dorsal view ( Fig. 11 D, E). Sternum longer than wide, yellow-brown, fused to carapace, surface smooth, median concavity absent, with radial furrows between coxae I-II, II-III, III-IV, without posterior hump, setae abundant ( Figs. 10 C, 11C, F). Chelicerae, endites and labium yellow-brown. Anterior face of paturon unmodified, with sparse setae ( Fig. 11 B); fang shape normal, without prominent basal process, tip unmodified. Endites same as sternum in sclerotization, unmodified ( Fig. 12 A). Labium same as sternum in sclerotization, shape as in Fig. 12 A. Female palp brown, without spines; femur approximately twice as long as patella; patella about as long as tibia, without prolateral row of ridges, without leaf-like setae; tibia with three dorsal trichobothria; tarsus not expanded, twice as long as tibia ( Fig. 12 C, D). Pedicel: With one dorsal and one ventral sclerite; dorsal sclerite flat, posteriorly drawn out into a point, not fused to prosoma, without special modifications; ventral sclerite Ushaped, covering ventral and lateral sides of pedicel, anteriorly fused to prosoma, without special modifications ( Fig. 12 B). Abdomen: Ovoid, without long posterior extension, with dorsal constriction ( Figs. 10 D, 12E, 13A). Book lung covers large, ovoid, without setae, anterolateral edge unmodified ( Fig. 10 F). Posterior spiracles not connected by groove. Pedicel tube short, without triangular extensions, without fringe of setae ( Fig. 13 C, D); scutopedicel region without ridges or denticles, with small oval glands ( Fig. 13 E), plumose hairs absent, matted setae on anterior ventral abdomen in pedicel area absent. DS strongly sclerotized, covering full length of abdomen, no soft tissue visible from above, brown, without white transverse band, not fused to ES, anterior half without projecting denticles, surface smooth ( Figs. 10 D, 12E, F, 13A). ES strongly sclerotized, light brown, surrounding pedicel, small lateral sclerites absent. PES strongly sclerotized, light brown, long, leaving less than 1/4 of abdomen length uncovered, not fused to ES ( Figs. 10 E, 13B, F). Lateral apodemes visible through integument ( Fig. 10 F). Spinneret scutum present, incomplete ring, with fringe of needle-like setae. Anal scutum present. Dense patch of setae anterior to spinnerets absent. Interscutal membrane with setae. Colulus small, sclerotized, sporting two setae. ALS bisegmented, with one major ampullate gland spigot and three piriform gland spigots; PMS unisegmented, with four spigots; PLS bisegmented, with six spigots ( Fig. 13 G). Legs: Base color white-yellow, femora I-IV with distal darkening, tibiae I-IV and metatarsi III-IV with basal darkening; without spines; femur IV not thickened, same size as femora I-III, patella plus tibia I shorter than carapace; tibia I without dorsal row of ridges, tibia III with group of specialized setae on ventral apex. Tarsal claws examined with SEM; superior claws I-II with 3-4 large, proximally situated teeth on lateral surfaces, about 10 small, distally situated teeth on median surfaces; superior claws III-IV with 2-4 large, proximally situated teeth on lateral surfaces, about 3 small, distally situated teeth on median surfaces ( Fig. 14 E, F); inferior claw absent. Trichobothria examined with SEM; each leg with four dorsal trichobothria: one on proximal tibia, two on distal tibia, one on distal metatarsus ( Fig. 14 A, B); bothrium with ridges, aperture internal texture grate-like ( Fig. 14 C). Tarsal organ exposed, legs I-II with three receptors ( Fig.

14D), legs III-IV with two receptors. Genitalia: External genitalia as in Fig. 15 A–D, with a prominent scape-like structure; in posterior part of scape a short longitudinal groove (arrow in Fig. 15 B). Posterior of the scape a small cone-like structure ( Fig. 15 B); in anterior surface of cone a narrow groove ( Fig. 15 D; this groove may be a continuation of the groove in the scape). Internal genitalia consisting of apodemes, two uterine sclerites, and a genital duct ( Fig. 15 F). Anterior uterine sclerite T-shaped ( Fig. 16 A). Posterior uterine sclerite plate-like. Proximal part of genital duct relatively broad, with two rows of finger-like protrusions ( Fig. 16 C–E); distal part of duct narrow, ascending along posterior uterine sclerite, lacking protrusions ( Fig. 16 A, B). On either side of duct a pair of small tubular structures, presumably glands ( Figs. 15 F, 16F); these glands open to the outside via small pores situated lateral of the scape (arrowheads in Fig. 15 B).

Distribution. Known only from the type locality ( Fig. 1 ).

Figures

FIGURE 1. Map of West Africa indicating the distribution of Antoonops corbulo Fannes & Jocqué, 2008 (black squares), A. bouaflensis Fannes & Jocqué, 2008 (black circle), A. iita Fannes & Jocqué, 2008 (black triangle), A. nebula Fannes & Jocqué, 2008 (red square), A. kamieli n. sp. (red circle), and A. sarae n. sp. (red triangle).

FIGURE 10. Antoonops sarae n. sp., female. Holotype. A. Habitus, dorsal view. B. Carapace, dorsal view. C. Same, ventral view. D. Abdomen, dorsal view. E. Same, ventral view. F. Epigastric region, ventral view. Scale bars: 50 µm (F), 100 µm (A – E).

FIGURE 11. Antoonops sarae n. sp., female. A. Carapace, lateral view. B. Same, anterior view. C. Same, ventral view. D. Eyes, anterior view. E. Same, dorsal view. F. Posterior part of sternum, ventral view. Scale bars: 10 µm (F), 20 µm (D, E), 50 µm (A – C).

FIGURE 12. Antoonops sarae n. sp., female. A. Mouthparts, ventral view. B. Ventral pedicel sclerite, ventral view. C. Pedipalp, prolateral view. D. Same, retrolateral view. E. Abdomen, lateral view. F. Anterior part of dorsal scutum, lateral view. Scale bars: 10 µm (B), 20 µm (A, C, D, F), 50 µm (E).

FIGURE 13. Antoonops sarae n. sp., female. A. Abdomen, dorsal view. B. Same, ventral view. C. Pedicel tube, lateral view. D. Same, ventral view. E. Scuto-pedicel region, anterior view. The arrows indicate some of the numerous glands that are present. F. PES, ventral view. G. Spinnerets, posterior view. Scale bars: 10 µm (C – E, G), 50 µm (A, B, F).

FIGURE 14. Antoonops sarae n. sp., female. A. Leg I, retrolateral view. B. Leg III, prolateral view. C. Trichobothrium, metatarsus I, dorsal view. D. Tarsal organ, leg I, dorsal view. E. Proclaw, leg IV, lateral surface. F. Same, median surface. Arrow: small teeth. Scale bars: 1 µm (C, D), 2 µm (E, F), 50 µm (A, B).

FIGURE 15. Antoonops sarae n. sp., female. A. Epigastric region, ventral view, showing scape-like structure (sc). B. Detail of A. Arrow: groove in scape-like structure. Arrowheads: pores. Asterisk: cone-like structure. C. Epigastric region, anterior view. D. Detail of C. Arrow: groove in anterior surface of cone-like structure. E. ES and PES, dorsal view. F. Internal genitalia, dorsal view, showing genital duct (d). Arrowheads: glands. Scale bars: 2 µm (D), 5 µm (A – C, F), 50 µm (E).

FIGURE 16. Antoonops sarae n. sp., female. A. Ascending part of duct (asterisk) and uterine sclerites, dorsal view. B. Same, posterior view. C. Proximal part of duct, dorsal view, showing protrusions. D. Same, posterior view. E. Same, lateral view. Arrowhead: scape-like structure. Arrow: cone-like structure. F. Glands, dorsal view. Abbreviations: as, anterior uterine sclerite; ps, posterior uterine sclerite. Scale bars: 2 µm (B, F), 5 µm (A, C – E).

FIGURE 17. A. Antoonops kamieli n. sp., male, carapace, dorsal view. B. A. kamieli n. sp., male, ES and PES, ventral view. C. A. kamieli n. sp., female, PES, ventral view. Arrowhead: anterior element. Arrow: posterior element. D. A. sarae n. sp., female, epigastric region, ventral view. Scale bars: 50 µm.