Aposphragisma stannum Thoma 2014, sp. nov.
Creators: name: THOMA, MARCO
name: KRANZ-BALTENSPERGER, YVONNE
name: KROPF, CHRISTIAN
name: GRABER, WERNER
name: NENTWIG, WOLFGANG
name: FRICK, HOLGER
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Oonopidae
Aposphragisma
Aposphragisma stannum

description: Aposphragisma stannum Thoma, sp. nov.
(Fig. 48)
Type material. HOLOTYPE: male (PBI_OON 00012551), Bukit Timah Nature Reserve (SINGAPORE) [01°21′N 103°47′E; inf.], 19.XII.1968, forest litter, leg. Dennis H. Murphy, deposited at MHNG.
Etymology. The species epithet is a noun in apposition meaning ‘tin’ in Latin. It refers to Bukit Timah, the type locality, which means ‘tin bearing hill’ in the Malay language.
Diagnosis. A. stannum sp. nov. does not belong to the stripe clade and thus shows a completely ornamented sternum. It can be distinguished from other species with a completely ornamented sternum by the combination of the following traits: carapace margin with pointed denticles, sluice restricted to posterior margin; cheliceral promargin distally with tooth-like projection; epigastric scutum dorsally with a widely oval subterminal ridge.
Description. Description based on 1 male.
MALE. With the characters of the genus except as noted. Body length 1.21 mm, carapace length 0.56 mm. Sclerotized parts uniformly coloured yellow-brown, close to colour 23A ‘cinnamon’; legs slightly paler than body, more yellowish. Habitus: Figs. 48 A-C.
CEPHALOTHORAX. Carapace: surface of elevated portion of pars cephalica smooth, sides finely reticulate; posterolateral surface without spikes; carapace margin with sluice restricted to posterior margin, with pointed denticles; few non-marginal pars thoracica setae present, very scattered. Eyes: ALE well developed, PLE and PME tiny, all oval; posterior eye-row straight from above, procurved from front; ALE separated by less than their radius; ALE-PLE separated by less than ALE radius; PME separated by less than their radius; PLE-PME separated by less than PME radius. Sternum completely finely ornamented; single lobed elements hardly visible on stereomicroscope level, surface appears rather reticulate; posterior margin with broad single extension. Pleura: surface smooth, presence of pits could not be assessed on stereomicroscope level. Mouthparts: chelicerae promargin with row of flattened setae in combination with plumose setae, distally extending into a short inwards pointing tooth-like projection; anterior face of paturon in lateral view subbasally with slight indention.
ABDOMEN. Book lung covers large, elliptical to rather pear-shaped (sides slightly convex), about 3–4 times longer than wide. Epigastric scutum dorsally with widely oval subterminal ridge (sr) (Fig. 48C). Postepigastric scutum long, semicircular, with long posteriorly directed lateral apodemes (lap) (Fig. 48B).
GENITALIA. Epigastric region: Sperm pore situated between anterior and posterior spiracles. Palp: basal segments as well as bulb and cymbium slightly lighter in colour than rest of body; bulb rather stout, tapering apically (Fig. 48D). Embolus (em) tip spatulate; embolic spine with pointed tip. Conductor (con) with slender tip (Fig. 48D). Embolus-conductor-complex about half as long as bulb.
Distribution. Bukit Timah, SINGAPORE (Fig. 49).
description: Published as part of 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, pp. 1-86 in Zootaxa 3798 (1) on page 72, DOI: 10.11646/zootaxa.3798.1.1, http://zenodo.org/record/4431865