Rhyssoleptoneta aosen Zhu & Li 2021, spec. nov.
Creators: name: Zhu, Wenhui
name: Li, Shuqiang
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Leptonetidae
Rhyssoleptoneta
Rhyssoleptoneta aosen

description: Rhyssoleptoneta aosen spec. nov.
Figs 9–10, 13A, 14
Type material. CHINA: Beijing: Holotype: male, Chaoyang District, Aosen (short name in Chinese for Olympic Forest Park), 40°00’38.88”N, 116°23’32.16”E, ca. 40 m elevation, Tongyao Jiang leg. 8.11.2019 (IZCAS-Ar42312). Paratypes: 1 male (IZCAS-Ar42313), 2 females (IZCAS-Ar42314–Ar42315), with same data as for holotype.
Etymology. The specific name refers to the type locality and is a noun in apposition.
Diagnosis. This species resembles R. latitarsa Tong & Li, 2007 (see Wang et al. 2012: 870, figs 1–10, Tong & Li, 2007: 35, figs 1–6), but males are distinguished by having a rectangular embolus (vs triangular in R. latitarsa), a median apophysis without a distal branch, and by the presence of three tooth-shaped projections horizontally (rows of tooth-shaped projections vertical in R. latitarsa, Fig. 13B) on the palpal bulb. Females are distinguished from R. latitarsa by lacking a long scape in the genital area.
Description. Male (holotype): Total length 1.90 (Fig. 9A). Carapace 1.05 long, 0.60 wide. Opisthosoma 0.85 long, 0.60 wide. Carapace yellow. Six eyes. Eye sizes: ALE 0.07, PLE 0.07, PME 0.03. Distance between eyes: ALE-PME 0.12, PLE-PLE 0.08, PLE-PME 0.07. Median groove needle-shaped, cervical grooves and radial furrows distinct. Clypeus 0.38 high. Chelicera light brown, with seven teeth on promargin of fang furrow and three small teeth on retromargin. Opisthosoma pale yellow, ovoid. Leg measurements: I 3.69 (0.95, 0.31, 1.24, 0.65, 0.54); II 2.90 (0.81, 0.24, 0.87, 0.54, 0.44); III 2.39 (0.76, 0.15, 0.56, 0.51, 0.41); IV 4.08 (1.01, 0.36, 1.33, 0.74, 0.64). Male palp (Figs 9C–D): femur without long spines; tibia with one long trichobothrium on the dorsal surface and without a special projection. Palpal tarsus wide, not branched distally, with a short projection on dorsal surface. Bulb complex, wrinkled on prolateral surface and with three 3 tooth-shaped projections on ventral surface (arrow in Figs 9B, 13A). Embolus rectangular. Median apophysis long. Conductor triangular (Fig. 9B).
Female (paratype, IZCAS-Ar42314): Similar to male in colour and general features but larger. Total length 2.15 (Figs 10A–B). Carapace 0.90 long, 0.65 wide. Opisthosoma 1.25 long, 0.70 wide. Clypeus 0.43 high. Six eyes. Eye sizes: ALE 0.07, PLE 0.07, PME 0.03. Distance between eyes: ALE-PME 0.12, PLE-PLE 0.08, PLE-PME 0.07. Chelicera light brown, with seven teeth on promargin of fang furrow and four small teeth on retromargin. Leg measurements: I 4.08 (1.01, 0.40, 1.32, 0.86, 0.49); II 3.51 (0.99, 0.35, 0.94, 0.74, 0.49); III 2.88 (0.85, 0.21, 0.76, 0.62, 0.44); IV 4.36 (1.02, 0.41, 1.46, 0.93, 0.54). Genital area (Fig. 10B) without a scape on the posterior edge. Internal genitalia (Fig. 10C) with a pair of coiled spermathecae and sperm ducts.
Distribution. Beijing, China (Fig. 14).
description: Published as part of Zhu, Wenhui & Li, Shuqiang, 2021, Five new leptonetid spiders from China (Araneae: Leptonetidae), pp. 281-299 in Zootaxa 4984 (1) on pages 296-297, DOI: 10.11646/zootaxa.4984.1.21, http://zenodo.org/record/4927194