Apostenus humilis Simon 1932
Creators: name: Bosselaers, Jan
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Liocranidae
Apostenus
Apostenus humilis

description: Apostenus humilis Simon, 1932
Figs. 1 A–E; 2 B, C; 8 A.
Apostenus humilis Simon, 1932: 936, 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) 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), 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) 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) 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) 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).
description: Published as part of Bosselaers, Jan, 2009, Studies in Liocranidae (Araneae): redescriptions and transfers in Apostenus Westring and Brachyanillus Simon, as well as description of a new genus, pp. 37-55 in Zootaxa 2141 on pages 39-42, DOI: 10.5281/zenodo.188586