Aposphragisma menzi 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 menzi

description: Aposphragisma menzi Thoma, sp. nov.
(Figs. 28–31)
Type material. HOLOTYPE: male (PBI_OON 00031389), Kalimantan (INDONESIA), Berau District, near Kampung Suaran, c. 40 km S of Tanjungredeb, 50 m [01°59′42′′N 117°36′03′′E; prov.], 1.X.2008, primary forest on limestone, leg. P. Schwendinger, deposited at MHNG. PARATYPES: 2 males & 1 female (PBI_OON 00031380), collected together with male holotype, deposited at MHNG; 1 male (PBI_OON 00031381), Kalimantan(INDONESIA), Berau District, Hutan Wisata Sei Tangap, c. 8 km W of Tanjungredeb, 30 m [02°08′04′′N 117°24′39′′E; prov.], 2.X.2008, primary forest, leg. P. Schwendinger, deposited at AMNH; 1 male & 1 female (PBI_OON 00031388), collected with paratype PBI_OON 00031381, deposited at MHNG; 1 female (PBI_OON 00031390; abdomen used for examination of internal genitalia), 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.], 29.IX./ 3.X.2008, primary forest, leg. P. Schwendinger, deposited at MHNG; 2 males & 1 female (PBI_OON 00031391), collected together with paratype (PBI_OON 00031390), deposited at NMBE; 1 male (PBI_OON 00031403), collected together with paratype (PBI_OON 00031390), deposited at MHNG.
Non-type material. 1 male (PBI_OON 00031382; used for SEM), collected together with paratype (PBI_OON 00031390), deposited at MHNG.
Etymology. The species epithet is dedicated to Dr. Myles H. M. Menz (*1982), an Australian zoologist, botanist and conservation biologist whose friendship and scientific work is highly admired by the first author.
Diagnosis. A. menzi sp. nov. 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; carapace margin with blunt denticles, sluice (slu) restricted to posterior margin (Fig. 28D); epigastric scutum in females posterolaterally with a row of longitudinal ridges (lr) (Fig. 31F). It is the only species of the stripe-clade showing a completely smooth carapace surface (Figs. 28D, H).
Description. Description based on 9 males and 4 females.
MALE. With the characters of the genus except as noted. Body length 1.27–1.38 mm (n=9), carapace length 0.61–0.65 mm (n=9). Sclerotized parts uniformly coloured orange-brown, close to colour 340 ‘robin rufous’; legs slightly paler than body, pale orange. Habitus: Figs. 28 A–C.
CEPHALOTHORAX. Carapace: entire surface smooth (Figs. 28 A–D, H); posterolateral surface without spikes; posterior edge of pars cephalica with slightly stronger modified hair bases, appearing as small denticles (Fig. 28D); carapace margin with sluice (slu) restricted to posterior margin, with blunt denticles (Fig. 28D). Eyes: posterior eye-row straigth from above, procurved from front; ALE largest, separated by their radius to diameter; 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 rather broad smooth median stripe (Figs. 28 E–G); posterior margin with broad single extension, covered with blunt denticles (Figs. 28 E–G); setae appearing slightly plumose at SEM level (Fig. 29A). Pleura: surface smooth with pairs of large pits dorsally of each coxa I, II and III (as in A. brunomanseri sp. nov., cf fig. 10B). Mouthparts: chelicerae posterior margin of inner surface proximally modified to a ridge with median slit, covering about 2/3 of margin length, distally ending in a rounded ‘knob’ (Fig. 29D); promargin with row of flattened setae (rfs) in combination with plumose setae (Figs. 29 D–E), distally extending into a short inwards pointing tooth-like projection (tlp) (Figs. 28H, 29D); anterior face of paturon in lateral view subbasally with slight indention (ind) (Fig. 28C). Endites distally with brush of special wing-like setae (ws) on inner margin (Figs. 29 B–C), outer margin subdistally with a pair of rather long inward bent plumose setae (ebs) (Fig. 29B).
ABDOMEN. Book lung covers (bc) large, elliptical to dumbbell or pear-shaped (sides slightly concave), about 3–4 times longer than wide (Fig. 29F). Epigastric scutum dorsally with widely oval subterminal ridge (sr) (Fig. 29F). Postepigastric scutum long, semicircular, with long posteriorly directed lateral apodemes (lap) (Fig. 29G). Setae appearing slightly plumose at SEM level.
GENITALIA. Epigastric region: sperm pore situated between anterior and posterior spiracles (Fig. 29G). Palp: basal segments lighter in colour than rest of body; bulb rather stout, tapering apically (Figs. 31 A–D). Embolus (em) tip spatulate (Figs. 31C, E); embolic spine (esp) with fringed tip (Fig. 31E). Conductor (con) with slender tip (Figs. 31C, E). Embolus-conductor-complex about half as long as bulb.
FEMALE. As in male except as noted. Body length 1.47–1.52 mm (n=4), carapace length 0.66–0.67 mm (n=4). Epigastric scutum posterolaterally with a row of longitudinal ridges (lr) (Fig. 31F).
GENITALIA. Dorsal view (Figs. 31 F–G): receptaculum (re) triangular shaped with rounded posterior edge, laterally framed by long rectangular sclerites i.e. lateral apodemes (lap); apodemes distally weakly sclerotized and thus looking rather short in ventral view at stereomicroscope level; globular appendix (gap) lying dorsally of receptaculum about half as long as receptaculum; lateral and median part of receptaculum dorsally covered with papillae (pap); a transverse sclerite (ts) anteriorly to the receptaculum not observed, maybe lost during preparation.
Intraspecific variation. Body size variable (see above). Three males show honey-yellow colouration. Number of denticles on carapace margin varies. Extension of smooth median stripe on sternum slightly variable but never less than about 2/3 of sternum length.
Distribution. NE-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 46-50, DOI: 10.11646/zootaxa.3798.1.1, http://zenodo.org/record/4431865