Apostenus humilis Simon, 1932

Bosselaers, Jan, 2009, Studies in Liocranidae (Araneae): redescriptions and transfers in Apostenus Westring and Brachyanillus Simon, as well as description of a new genus, Zootaxa 2141, pp. 37-55 : 39-42

publication ID	https://doi.org/ 10.5281/zenodo.188586
DOI	https://doi.org/10.5281/zenodo.5575999
persistent identifier	https://treatment.plazi.org/id/03B9291A-FFD3-F167-FF64-F590FD59D19A
treatment provided by	Plazi
scientific name	Apostenus humilis Simon, 1932
status

Treatment

Apostenus humilis Simon, 1932 View in CoL

Figs. 1 A–E View FIGURE 1 A – E ; 2 B, C; 8 A.

Apostenus humilis Simon, 1932: 936 View in CoL , 969, fig. 1430–1432.

Type material. Holotype male, no further data [ MNHN 25305] .

Additional material examined. 13 ♀, " Ap. humilis E.S. Pyr. or." [ MNHN 1758] ; 11 ♀, "Banyuls Apostenus humilis E.S. in litt." [ MNHN - Coll. Berland 4.25.9.62] ; 21 ♀, " Apostenus humilis E.S. in litteris et det. Banyuls 09" [ MNHN 25] ; 18 ♀, " Apostenus humilis E.S. Pyr. Or. Amélie " [ MNHN] .

Diagnosis. A. humilis is close to A. maroccanus but differs from it by the more slender embolus and the longer MA, as well as by the median epigynal septum which is subtriangular and not lozenge-shaped.

Description. Male (holotype). Total length 2.03. Carapace length 0.97, w 0.79, unicolorous pale yellow, fovea brown, pronounced, length 0.16, anterior end 0.66 from front end of carapace. MOQ depth 0.13, anterior w 0.08, posterior w 0.14. AER w 0.21, PER w 0.27. AME small, with dark retina restricted to median 2/3 of eye. Clypeus slightly narrower than diameter of AME. Chelicerae pale yellow, three very small teeth along promarginal cheliceral rim, two small teeth on retromarginal rim, close to position of fang tip. Sternum pale yellow, length 0.58, w 0.50. Abdomen pale yellowish brown. No rh present. Leg length I 2.95 II 2.71 III 2.66 IV 3.50. Leg spination ( Fig. 2 B View FIGURE 2 A – K ) fe: I do 1-1-0 plv 0-0-1; II do 1-1-0; III do 1-1-0; IV do 1-1-2; ti: I plv 1-1-1-1-1 rlv 1-1-1-1-1; II plv 1-1-1-1-1 rlv 1-1-1-1; III pl 0-0-1 plv 0-1-1 rlv 0-0-1; IV pl 0-0-1 do 1-0-1 rl 0- 1-1 plv 1-1-1 rlv 0-0-1; mt: I plv 1-1-1 rlv 1-1-1; II plv 1-1-1 rlv 1-1-1; III pl 0-1-1 rl 0-1-1 plv 1-0-1 rlv 1-0- 0; IV pl 1-0-0 rl 1-1-0 plv 1-0-1 rlv 1-0-1 vts 1.

Male palp as illustrated ( Fig. 1 A, B View FIGURE 1 A – E ), with some stronger do setae and a weak rl groove on cymbium, a slender embolus and a long, thin, hook-shaped MA.

Female (MNHN25). Total length 3.42. Carapace length 1.18, w 0.97, unicolorous pale yellow, fovea brown, pronounced, length 0.21, anterior end 0.79 from front end of carapace. MOQ depth 0.14, anterior w 0.11, posterior w 0.18. AER w 0.26, PER w 0.32. AME as in male. Clypeus equal to diameter of AME. Chelicerae as in male. Sternum pale yellow, length 0.74, w 0.66. Abdomen pale yellowish brown. No rh. Leg length I 3.37 II 3.16 III 3.13 IV 4.29. Leg spination ( Fig. 2 C View FIGURE 2 A – K ) fe: I pl 0-0-1 do 1-1-0 plv 0-1-1; II do 1-1-0; III do 1-1-1; IV do 1-1-2; ti: I plv 1-1-1-1-1 rlv 1-1-1-1-1; II plv 1-1-1-1-1 rlv 1-1-1-1-1; III pl 0-1-1 do 0-0-1 rl 1-0-1 plv 0-1-1 rlv 0-0-1; IV pl 0-1-1 do 1-0-1 rl 0-1-1 plv 1-1-1 rlv 0-0-1; mt: I plv 1-1-1 rlv 1-1-1; II plv 1- 1-1 rlv 1-1-1; III pl 0-1-1 rl 0-1-1 plv 1-0-1 rlv 1-0-0; IV pl 1-0-1 rl 1-1-1 plv 1-0-0 rlv 1-0-0 vts 1. Paired ve spines on ti and mt I and II strong in both sexes, as typical for the genus.

Epigyne ( Fig. 1 C View FIGURE 1 A – E ) weakly sclerotised, with a narrow median septum, tapering towards posterior end. A darker, elliptic depression is present on each side of the median septum. Vulva ( Fig. 1 E View FIGURE 1 A – E ) with anterior CO and two oval ST with the long axis oriented longitudinally. Interior side of ST1 has a thickened wall with tubular structures, presumably a gland.

Distribution. Platnick (2009) mentions only France, but the species has been reported from the Iberian Peninsula as well ( Cardoso 2000; Morano 2004).