Gamasomorpha raya Eichenberger, 2012

Eichenberger, Beata, Kranz-Baltensperger, Yvonne, Ott, Ricardo, Graber, Werner, Nentwig, Wolfgang & Kropf, Christian, 2012, Morphology of new Indian / Indonesian Gamasomorpha and Xestaspis species (Araneae: Oonopidae) 3160, Zootaxa 3160 (1), pp. 1-68 : 30

Gamasomorpha raya Eichenberger n. sp.

( Figs. 22–23 )

Type material: Holotype male ( PBI_OON 00011989 ): West-Malaysia : Kedah , Pulau Langkawi : Gunung Raya , 700-800 m, 6°23'N, 99°48'E, 1-7 January 2005, leg. A. Schulz ( MHNG). Female paratype ( PBI_OON 00012827 ): Indonesia: Bintan Island , Mount Langkuas, about 5 km north-west of Kijang, 00°52'33.9"N, 104°34'45.3"E, 125- 220 m, disturbed rain forest, 22-23 June 2001, leg. P. Schwendinger ( MHNG).

Etymology: The species epithet is a noun in apposition and refers to the type location Gunung Raya.

Diagnosis: Can be distinguished from other Gamasomorpha species by the combination of following traits: Setae on carapace and sternum originating from small pits (figs. 22. D–E), rows of droplike pits on sternum between coxae I-II, II-III and III-IV rather helical than round and of medium size (fig. 22. D), abdomen scuto-pedicel region with paired scutal ridges (psr) and an additional, upper, straight ridge (usr), (fig. 22. G).

Description: Description based on 1 male and 1 female.

MALE: Body length 2.8 mm. Uniformly orange-brown colored species, legs pale orange (figs. 22. A–C). Carapace with two pairs of tiny posterolateral spikes (cps), a third, very ventral to lateral pair is indicated (figs. 22. C, F), posterolateral edge with a pair of pits (cpp), (fig. 22. F), lateral margin straight from dorsal view, with tiny, blunt denticles (fig. 22. F), setae u-shaped distribution in double row. Eye group by at least diameter of anterior lateral eyes narrower than clypeus, all eyes oval, about subequal (fig. 22. E). Sternum anterior margin with continuous transverse groove (ctg), (fig. 22. D). Abdomen elongated (width:length ratio, 1:1.7), scuta surface strongly punctate (fig. 22. G), with needle-like setae; pedicel tube with small, dorsolateral, triangular extensions (pds), (fig. 22. G), pedicel with tiny ventral hump, booklung covers very large, ovoid, anterolateral edge unmodified (fig. 22. H); postepigastric scutum with short, posteriorly directed lateral apodemes. Legs patella plus tibia I shorter than carapace, ventral apex of tibiae III and IV with few specialized hairs (sh) with fine, plumose, curved hair tip (see fig. 13. C), ventral apex of tibia I-IV with two thickened, long, needle-like setae. No detailed description on promarginal chelicerae setae, serrula, grooves on lateral margin of sternum, trichobothria hood structure, tarsal organ and scopula between claws. Male genitalia: Similar to G. asterobothros n. sp. with a long slender, lamellar embolus (em), adjacent to an embolic accessory appendage (ma) and a lamellar conductor (co) (figs. 23. A–C). Conical extension (ce) unincisive (figs. 23. A–B).

FEMALE: Body length 3.5 mm. Female genitalia: Ventral view: (fig. 23. D): Without external features.

Distribution: West-Malaysia, Pulau Langkawi; Indonesia, Bintan Island (fig. 49. A).

Figures

FIGURE 22: Gamasomorpha raya n. sp. Male: A. habitus dorsal view; B. habitus ventral view; C. habitus lateral view; D. sternum ventral view; E. carapace anterior view; F. carapace dorsal view; G. abdomen anterior view; H. booklung covers lateral view. Abbreviations: cps, carapace posterolateral spikes; ctg, continuous transverse groove; cpp carapace posterolateral pits; psr, paired scutal ridges; usr, dorsal scutal ridge; pds, pedicel tube dorsolateral spikes; boc, booklung covers. Scale bars: A–C 1 mm; D–G 0.5 mm; H 0.2 mm.

FIGURE 23: Gamasomorpha raya n. sp. Male: A,B. right palp, prolateral view, cymbium slightly broken off from bulbus, femur basally broken; C. right embolus, prolateral-ventral view. Female: D. abdomen ventral view. Abbreviations: ce, conical extension; em, embolus; co, conductor; ma, mesal embolic accessory appendage. Scale bars: A–B 300 µm; C 100 µm; D 1 mm.