Aposphragisma nocturnum 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 nocturnum

description: Aposphragisma nocturnum Thoma, sp. nov.
(Figs. 34–35)
Type material. HOLOTYPE: male (PBI_OON 00015995), Kalimantan (INDONESIA), Kutal District, Lempake Tanah Merah [00°30′S 117°09′E; inf.], 24.X.1979, rain forest, leg. P. T. Lehtinen, deposited at MZT. PARATYPES: 1 male (PBI_OON 00032179), Kalimantan (INDONESIA), Berau District, 1 km off road Tanjungredeb to Tanjungselor, c. 45 km N of Tanjungredeb, 190 m [02°29′33′′N 117°28′46′′E; prov.], primary forest, 29.IX./ 3.X.2008, leg. P. Schwendinger, deposited at MHNG.
Etymology. The species epithet is a Latin adjective meaning nocturnal. It refers to the many hours the first author spent working at night on the first draft of the present paper during the final stage of his master thesis.
Diagnosis. A. nocturnum 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 very small blunt denticles, sluice reaching from posterior margin to level of coxa I (Fig. 34D); cheliceral promargin distally without toothlike projection; epigastric scutum dorsally without a widely oval subterminal ridge. (Fig. 34G). The new species resembles A. scimitar sp. nov. but can easily be distinguished by the presence of denticles on the carapace margin (absent in A. scimitar sp. nov.) and by the shape of the postepigastric lateral apodemes (Fig. 34H, cf fig. 44H).
Description. Description based on 2 males.
MALE. With the characters of the genus except as noted. Body length 2.15–2.23 mm (n=2), carapace length 0.98–1.00 mm (n=2). Sclerotized parts uniformly coloured orange-brown, approaching colour 240 ‘kingfisher rufous’; legs only very slightly paler than body. Habitus: Figs. 34 A–C.
CEPHALOTHORAX. Carapace: surface of elevated portion of pars cephalica very slightly wrinkled, sides finely reticulate (Figs. 34D, F); posterolateral surface without spikes; posterior edge of pars cephalica with slightly stronger modified hair bases, appearing as very small denticles; carapace margin with narrow sluice reaching from posterior margin to level of coxa I, with small blunt denticles (Fig. 34D); non-marginal pars thoracica seate few and very scattered. Eyes: posterior eye-row straight from above, procurved from front; ALE well developed; PLE and PME tiny (Fig. 34D); ALE and PLE oval; PME asymmetric, roundish to ovoid; ALE separated by their radius to diameter; ALE-PLE separated by less than ALE radius; PME touching for less than half their length; PLE-PME separated by less than PME radius. Sternum completely finely ornamented (Fig. 34E); posterior margin with broad single extension, covered with blunt denticles (Fig. 34E). Pleura: surface smooth with pairs of large pits dorsally of each coxa I, II and III (Fig. 34F). Mouthparts: chelicerae paturon anterior face in lateral view subbasaly with strong indention (ind) (Fig. 34F); promargin with row of flattened setae, distally without a short inwards pointing toothlike projection.
ABDOMEN. Book lung covers (bc) large, ovoid (sides slightly convex; fig. 34G). Epigastric scutum dorsally without widely oval subterminal ridge (Fig. 34G); scuto-pedicel region with slightly swollen hair bases. Postepigastric scutum long, semicircular, with long posteriorly directed lateral apodemes (lap) (Fig. 34H).
GENITALIA. Epigastric region: sperm pore situated between anterior and posterior spiracles (Fig. 34H). Palp: basal segments as well as bulb and cymbium slightly lighter in colour than rest of body; bulb stout, only slightly longer than cymbium, anterodorsally with very faint conical bulge (cb) (Figs. 35 A–B). Embolus (em) subdistally narrowed, dorsally without comb (Figs. 35 A–B); embolus tip widened and pennant-like (Figs. 35 A–B); embolic spine (esp) with pointed tip (Fig. 35C). Conductor (con) with slender tip (Figs. 35 A–B). Embolus-conductorcomplex about as long as bulb.
Intraspecific variation. Body size variable (see above). Number of denticles on carapace margin varies. Paratype lighter coloured, pale orange.
Distribution. E-Kalimantan, INDONESIA (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 pages 54-57, DOI: 10.11646/zootaxa.3798.1.1, http://zenodo.org/record/4431865