Cybaeus consocius Chamberlin & Ivie 1932
Creators: name: Bennett, Robb
name: Copley, Claudia
name: Copley, Darren
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Cybaeidae
Cybaeus
Cybaeus consocius

description: Key to the species of the Cybaeus consocius group
1. Proximal arm of tegular apophysis in ventral view with tip forked (Fig. 3, 20), bifid (Figs 11, 21), or a broad trough (Figs 18, 22); in retrolateral view with smoothly, simply curved dorsal margin (Figs 4, 12, 19). Proximal loops of copulatory ducts distinctly U-shaped in dorsal view of vulva (Figs 7, 15, 25)...................................................... 2
- Proximal arm of tegular apophysis in ventral view with tip acuminate and/or spirally twisted (Figs 28, 35, 44, 55–56, 61, 82) or blunt with long, narrow ventral trough (Figs 70, 73); in retrolateral view, dorsal margin a simple curve (Figs 36, 83) or a more complex compound curve (Figs 29, 45, 62). Proximal loops of copulatory ducts not distinctly U-shaped in dorsal view (Figs 32, 41, 48, 66, 79)........................................................................................ 4
2(1). Proximal arm of tegular apophysis in ventral view with broad, ventral trough terminating in a small point (Figs 18, 22). Atrium divided (Figs 23, 26)............................................................. hummeli Bennett spec. nov.
- Proximal arm of tegular apophysis in ventral view conspicuously forked (Fig. 3) or with inconspicuously bifid tip (Fig. 11). Atrium undivided, inverted U-shaped (Figs 5, 9, 13).......................................................... 3
3(2). Proximal arm of tegular apophysis with inconspicuously bifid tip (Fig. 11). Atrium convex medially, concave laterally (Fig. 13). Copulatory ducts attached to anterolateral corners of atrium and extending anteriorly from the atrium a distance equal to about 1/4 to 2/5 the distance from epigastric groove to anterior margin of atrium (Figs 14–15)......... hesper Chamberlin & Ivie
- Proximal arm of tegular apophysis with right-angled fork (Fig. 3). Atrium concave (Figs 5, 9, 16). Copulatory ducts attached to lateral margins of atrium (Figs 6–8, 17); extending little or no distance anteriorly from atrium… consocius Chamberlin & Ivie
4(1). Patellar apophysis with small dorsobasal prominence bearing several peg setae (Figs 68–69, 72). Tibia with small ridge dorsomedially above retrolateral tibial apophysis (Figs 68–69). Medial portion of embolus flattened, ribbon-like (Figs 70–71). Proximal arm of tegular apophysis blunt with narrow longitudinal trough ventrally (Figs 70–71, 73). Atrium large, nearly as wide as vulva (Figs 74, 77). Copulatory ducts broad, prominent; converging from atrium to midline then diverging before turning posteriorly at anterior margin of vulva (Figs 75–76, 78–79)................................ ubicki Bennett spec. nov.
- Patellar apophysis without dorsobasal prominence (Figs 27, 34, 43, 60, 81). Tibia without dorso-medial ridge. Embolus “normal” (Figs 35, 44, 61). Tip of proximal arm of tegular apophysis acuminate (Figs 35, 44, 61, 63). Atrium large but not nearly as wide as vulva (Figs 30, 37, 64) or small (Figs 46–47, 52). Copulatory ducts narrower (or, if broad, then membranous and not prominent); not following trajectory of converging then diverging before turning posteriorly (Figs 31, 40, 47, 65)......... 5
5(4). Patellar apophysis with two to six peg setae (Fig. 43). Proximal arm of tegular apophysis with prominent ventral keel and terminating in short, slightly twisted tip (Figs 44–45, 56). Atrium small, inconspicuous, its width equal to about 1/3 of the width of the vulva (Figs 46–47, 52)............................................................ penedentatus Bennett
- Patellar apophysis with 13 to 40 peg setae (Figs 27, 34, 60, 81). Proximal arm of tegular apophysis without ventral keel; tip twisted or not (Figs 28, 35, 57, 61, 63). Atrium larger, more conspicuous, its width about 1/2 to 2/3 width of the vulva (Figs 30, 37, 64).............................................................................................. 6
6(5). In retrolateral view, dorsal margin of tegular apophysis a simple curve, lacking a proximal projection (Figs 36, 83). Copulatory ducts usually only contiguous at atrium (Figs 38, 40). Femora usually banded..................................... 7
- In retrolateral view, dorsal margin of tegular apophysis a compound curve with a prominent proximally directed projection (Figs 29, 61–62). Copulatory ducts usually contiguous at atrium and medially (Figs 31–32, 65–67). Femora usually unbanded ................................................................................................... 8
7(6). About 13 peg setae around tip of short, anteriorly directed patellar apophysis (Fig. 81). Proximal arm of tegular apophysis with simple moderately corkscrewed tip lacking a dorsal process (Figs 57, 83). Spermathecal stalks slightly sinuous, describing an obtuse angle of about 120 ⁰ –130 ⁰ near Bennett’s glands (Fig. 41)................................... vulpinus Bennett
- About 35 peg setae dorsally on long, anterolaterally directed patellar apophysis (Fig. 34). Proximal arm of tegular apophysis with simple untwisted tip; tip with small, triangular dorsal process (Figs 35, 58). Spermathecal stalks more strongly sinuous, describing an acute angle of about 55 ⁰ –65 ⁰ near Bennett’s gland (Fig. 39)...................... pan Bennett spec. nov.
8(6). Patellar apophysis long, about as long as width of patella, with 15–25 peg setae (Fig. 60). Proximal arm of tegular apophysis with prominent basal projection and strongly twisted tip (Figs 61–63). Copulatory ducts and spermathecal stalks elongate (Figs 65–67)..................................................................................... simplex Roth
- Patellar apophysis shorter, length about 2/3 patellar width, with 30–40 peg setae (Fig. 27). Proximal arm of tegular apophysis with much less prominent basal projection and a weakly twisted tip (Figs 28–29). Copulatory ducts and spermathecal stalks short (Figs 31–32)............................................................... opulentus Bennett spec. nov.
description: Published as part of Bennett, Robb, Copley, Claudia & Copley, Darren, 2021, Cybaeus (Araneae: Cybaeidae): the consocius species group of the Californian clade, pp. 401-436 in Zootaxa 4965 (3) on pages 403-404, DOI: 10.11646/zootaxa.4965.3.1, http://zenodo.org/record/4752531