Gamasomorpha coniacris 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 : 27-30

Gamasomorpha coniacris Eichenberger n. sp.

( Figs. 20–21 )

Type material: Holotype male ( PBI_OON 00012323 ): West-Malaysia : Johor: Kota Tinggi Waterfalls at the foot of Gunung Muntahak, 170 m, evergreen rain forest, 5 February 2000, leg. P. Schwendinger ( MHNG). Female paratype ( PBI_OON 00016048 ), collected with male holotype ( MHNG). Male paratype ( PBI_OON 00011987 ): West- Malaysia: Johor: Gunung Pulai, 1°34’50.6”N, 103°30’36.5”E, 50 m secondary forest, SW of Kulai, 24 May 2004, leg. P. Schwendinger ( MHNG). Female paratype ( PBI_OON 00031337 ): Indonesia: Bintan Island: Mount Langkuas, ca. 5 km NW 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 ( NMBE).

Etymology: The species epithet, a Latin female adjective, refers to the strongly pointed conical extension of the male palp. Coni refers to the first part of the English term conical extension; acris is the Latin feminine adjective for pointed.

Diagnosis: Resembles G. squalens n. sp. but male palp with strongly pointed conical extension (ce) (fig. 21. A–B) and abdomen scuto-pedicel region with paired curved ridges (psr) in both sexes (fig. 20. H).

Description: Description based on 2 males and 2 females.

MALE: Body length 2.3 mm. Uniformly orange-brown colored species, legs pale orange (figs. 20. A–C). Sternum with radial furrows of large, droplike pits between coxae I-II, II-III, III-IV which are rather narrow than round and partly fused (fig. 20. D), anterior margin with continuous transverse groove (ctg) (fig. 20. D). Carapace pars cephalica rather strongly elevated in lateral view, surface very finely diagonally striated, pars thoracica with one indicated pair of posterolateral spikes (cps) (fig. 20. C), surface sides very finely reticulate, posterolateral edge with a pair of pits (cpp) (figs. 20. F–G), lateral margin straight from dorsal view, cephalic setae u-shaped distribution in single to double row, transverse row of setae at posterior end of cephalothorax originating from tiny blunt denticles at middle. Posterior margin of sternum less extending than in G. asterobothros n. sp., laterally indented. Eye group by less than diameter of anterior lateral eyes narrower than clypeus, all eyes oval, about subequal (fig. 20. E). Chelicerae paturon inner margin with pairs of enlarged setae, giving a mustache-like appearance from dorsal view (ceh), (see fig. 44. B). Abdomen scuta surface very finely longitudinally striated (see fig. 18. D) giving the specimen a matt appearance when observed with stereomicroscope; scuto-pedicel region with paired curved scutal ridges located close to the pedicel tube which may be distally slightly reduced (fig. 20. H); pedicel tube long, ventrally ribbed, with small, dorsolateral, triangular extensions (pds), (fig. 20. H); booklung covers (boc) small, very narrow, anterolateral edge unmodified (fig. 20. I); postepigastric scutum with short, posteriorly directed lateral apodemes. 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. 21. D–F). Cymbium slightly shorter than bulbus.

FEMALE: Body length 3.2 mm. Postepigastric scutum without posteriorly directed lateral apodemes. Legs patella plus tibia I nearly as long as carapace. Female genitalia: Ventral view (fig. 21. A): Without external features. Dorsal view (figs. 21. B–C): receptaculum (re) broadly-oval, with groove-like modifications dorsally, secretory sac (ssa) ovoid, globular appendix (gap) narrow, slightly shorter than half the length of the receptaculum, pore field of receptaculum (pof) located along globular appendix, with an anterior paddle-like sclerite (psc) and a naillike process (na), with lateral sclerites functioning as muscle attachments (A1).

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

Figures

FIGURE 20: Gamasomorpha coniacris 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 posterior view; G. carapace dorsal view; H. abdomen anterior view; I. booklung covers lateral view. Abbreviations: cps, carapace posterolateral spikes; ctg, continuous transverse groove; cpp, carapace posterior pits; psr, paired scutal ridges; pds, pedicel tube dorsolateral spikes; boc, booklung covers. Scale bars: A–C 1 mm; D–H 0.5 mm; I 0.2 mm.

FIGURE 21: Gamasomorpha coniacris n. sp. Female: A. abdomen ventral view; B–C. epigastric region dorsal view. Male: D–E. left palp, prolateral view; F. left embolus, ventral-prolateral view. Abbreviations: ce, conical extension; em, embolus; co, conductor; ma, mesal embolic accessory appendage; psc, paddle-like sclerite; na, nail-like process; go, genital opening; gap, globular appendix; pof, pore field of receptaculum; re, receptaculum; ssa, secretory sac; A1, lateral sclerites functioning as muscle attachments. Scale bars: A 0.5 mm; B–E 300 µm; F 100 µm.