Aposphragisma monoceros 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 : 53-54

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.4431921
persistent identifier	https://treatment.plazi.org/id/094F426D-FFA2-FFE8-6FC9-F43D814FFB44
treatment provided by	Plazi
scientific name	Aposphragisma monoceros Thoma
status	sp. nov.

Treatment

Aposphragisma monoceros Thoma View in CoL , sp. nov.

( Figs. 32–33 View FIGURE 32 View FIGURE 33 )

Type material. HOLOTYPE: male ( PBI_OON 00036324 ), Temburong District ( BRUNEI), Ashton Trail near Kuala Belalong Field Studies Centre , 21 km SSW of Bangar, 150 m [04°32′30.78′′N 115°09′18′′E; prov.], 1.X.2009, primary mixed dipterocarp forest, sifting leaf litter, leg. C. Griswold & N. Chousou Polydouri, deposited at CAS ( UT003 View Materials , CASENT 9029917 View Materials ) GoogleMaps . PARATYPES: 2 males ( PBI_OON 00032178 ), collected together with holotype, deposited at CAS ( UT004 View Materials , CASENT 9036043 View Materials ) GoogleMaps .

Etymology. The species epithet, a noun in apposition, is a Greek term meaning ‘unicorn’. It refers to the single ‘horn’ the species bears on the posterior part of its carapace.

Diagnosis. A. monoceros 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 with one pair of lateral double-toothed spikes (dts) ( Figs. 32 View FIGURE 32 D–E); carapace margin with pointed denticles, sluice restricted to posterior margin ( Fig. 32D View FIGURE 32 ). It is the only species of the stripe-clade possessing a single ‘horn’ (ho) at the posterior edge of pars cephalica ( Figs. 32D, F View FIGURE 32 ).

Description. Description based on 3 males.

MALE. With the characters of the genus except as noted. Body length 1.66–1.71 mm (n=3), carapace length 0.79 mm (n=3). Sclerotized parts uniformly coloured orange brown, close to colour 36 ‘amber’; legs slightly paler than body. Setae especially on abdominal scutae slightly longer and darker if compared to most congeners. Habitus: Figs. 32 View FIGURE 32 A–C.

CEPHALOTHORAX. Carapace: surface of elevated portion of pars cephalica smooth, sides strongly reticulate, partly interrupted by small smooth areas ( Fig. 32F View FIGURE 32 ); posterior edge of pars cephalica with a single ‘horn’ (ho) ( Figs. 32D, F View FIGURE 32 ); carapace margin with pointed denticles, sluice restricted to posterior margin ( Figs. 32 View FIGURE 32 D–E), posterolateral corners with a pair of double-toothed spikes (dts) ( Fig. 32D, E View FIGURE 32 ). Eyes: posterior eye-row recurved from above, procurved from front; ALE largest, separated by their radius to diameter; ALE-PLE touching; PME touching throughout most of their length; PLE-PME touching ( Figs. 32D, G View FIGURE 32 ). Sternum coarsely ornamented except smooth median stripe and broadly smooth edges (ornamentation arranged in an ovoid band; Fig. 32E View FIGURE 32 ); posterior margin with a rather narrow single extension, covered with few blunt denticles ( Fig. 32E View FIGURE 32 ). 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 promargin distally extending into a short inwards pointing tooth-like projection (tlp) ( Fig. 32E View FIGURE 32 ).

ABDOMEN. Book lung covers large, elongated elliptical (sides slightly concave), about 3 times longer than wide, darker in colour than surroundings ( Fig. 33A View FIGURE 33 ). Epigastric scutum dorsally with widely oval subterminal ridge (sr) ( Fig. 33A View FIGURE 33 , partly covered by dorsal abdominal scutum in this case). Postepigastric scutum long, semicircular, with short posteriorly directed lateral apodemes (lap) ( Fig. 33B View FIGURE 33 ). Dorsal abdominal setae very long and darkish.

GENITALIA. Epigastric region: sperm pore (sp) situated at level of posterior spiracles ( Fig. 33 View FIGURE 33 A–B). Palp: basal segments same colour as body but bulb and cymbium much lighter (pale orange); bulb rather stout, tapering apically ( Figs. 33 View FIGURE 33 C–D). Embolus (em) tip spatulate ( Fig. 33C, E View FIGURE 33 ); embolic spine (esp) with fringed tip ( Fig. 33E View FIGURE 33 ). Conductor (con) with broad tip (appearing ‘snout’-like in lateral view; Fig. 33E View FIGURE 33 ). Embolus-conductor-complex about as long as bulb ( Figs. 33 View FIGURE 33 C–D).

Intraspecific variation. Body size variable (see above). Number of denticles on carapace margin varies. One paratype male much lighter in colour, yellow to pale-orange.

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