Aposphragisma dayak Thoma, 2014

THOMA, MARCO, KRANZ-BALTENSPERGER, YVONNE, KROPF, CHRISTIAN, GRABER, WERNER, NENTWIG, WOLFGANG & FRICK, HOLGER, 2014, The new Southeast Asian goblin spider genus Aposphragisma (Araneae, Oonopidae): diversity and phylogeny, Zootaxa 3798 (1), pp. 1-86 : 27

publication ID	https://doi.org/ 10.11646/zootaxa.3798.1.1
publication LSID	lsid:zoobank.org:pub:CB8534BA-89CB-44A6-81E3-3A8927055C7A
DOI	https://doi.org/10.5281/zenodo.4431891
persistent identifier	https://treatment.plazi.org/id/094F426D-FF8C-FFC7-6FC9-F154808DF85C
treatment provided by	Plazi
scientific name	Aposphragisma dayak Thoma
status	sp. nov.

Treatment

Aposphragisma dayak Thoma View in CoL , sp. nov.

( Fig. 14 View FIGURE 14 )

Type material. HOLOTYPE: female (PBI_OON 00016222), Belait District ( BRUNEI), Labi Hills Forest Reserve , Teraja, 42 km S of Sungai Liang, 12 km S of Labi, 40 m [04°17′N 114°25′E; inf.], 22.XI.1988, forêt primaire (mixed dipterocarp forest), prélèvement de sol au pied d’un grand arbre, leg. B. Hauser, deposited at MHNG. GoogleMaps

Etymology. The species epithet is a noun in apposition and the general term for the indigenous peoples of Borneo.

Diagnosis. A. dayak sp. nov. is only known from one female. It belongs to the stripe-clade and can be distinguished from other species of this clade by the combination of the following traits: carapace without spikes ( Figs. 14C, E View FIGURE 14 ); carapace margin with blunt denticles, sluice restricted to posterior margin ( Fig. 14C View FIGURE 14 ); epigastric scutum posterolaterally with a row of longitudinal ridges. The new species resembles A. baltenspergerae sp. nov., A. borgulai sp. nov. and A. brunomanseri sp. nov. It differs from A. baltenspergerae sp. nov. and A. borgulai sp. nov. amongst others in sternum pattern and shape of postepigastric scutum. Sympatric A. brunomanseri sp. nov. has two pairs of spikes, longer abdominal setae, a knob-like apophysis projecting from the posterior margin of the sternum and (in females only) a pair of single curved ridges on the epigastric scutum.

Description. Description based on 1 female.

FEMALE. With the characters of the genus except as noted. Body length 1.69 mm, carapace length 0.73 mm. Sclerotized parts uniformly coloured orange-brown close to colour 136 ‘raw sienna’; legs pale orange, much paler than body. Habitus: Figs. 14 View FIGURE 14 A–B.

CEPHALOTHORAX. Carapace: surface of elevated portion of pars cephalica smooth, sides strongly reticulate, partly interrupted by small smooth areas ( Figs. 14C, E View FIGURE 14 ); posterolateral surface without spikes; posterior edge of pars cephalica with a pair of modified hair bases (pch), appearing as small ‘horns’ ( Figs. 14E View FIGURE 14 ); carapace margin with sluice restricted to posterior margin, with large blunt denticles ( Fig. 14C View FIGURE 14 ). Eyes: posterior eye-row straight from above, procurved from front ( Figs. 14C, F View FIGURE 14 ); ALE largest, separated by less than their radius; ALE-PLE separated by less than ALE radius; PME touching throughout most of their length; PLE-PME separated by less than PME radius. Sternum coarsely ornamented except smooth median stripe and broadly smooth edges (ornamentation arranged as oval band; Fig. 14D View FIGURE 14 ); posterior margin expanded as broad single extension, covered with blunt denticles, posteriorly without knob-like apophysis ( Fig. 14D View FIGURE 14 , cf A. brunomanseri sp. nov.). Pleura: surface smooth with pairs of large pits dorsally of each coxa I, II and III.

ABDOMEN. Book lung covers (bc) large, elongated elliptical to egg-shaped (i.e. sides convex), about 3 times longer than wide ( Fig. 14G View FIGURE 14 ). Epigastric scutum dorsally with widely oval subterminal ridge (sr) ( Fig. 14G View FIGURE 14 ), posterolaterally with a row of longitudinal ridges. Postepigastric scutum long, semicircular, with short posteriorly directed lateral apodemes (lap) ( Fig. 14H View FIGURE 14 ).

Distribution. Belait District, BRUNEI ( Fig. 49 View FIGURE 49 ).