Cybaeus consocius, Chamberlin & Ivie, 1932

Bennett, Robb, Copley, Claudia & Copley, Darren, 2021, Cybaeus (Araneae: Cybaeidae): the consocius species group of the Californian clade, Zootaxa 4965 (3), pp. 401-436: 403-404

publication ID

https://doi.org/10.11646/zootaxa.4965.3.1

publication LSID

lsid:zoobank.org:pub:94FB89CF-2083-4FAC-AE60-B8CCF1D5FE8E

DOI

http://doi.org/10.5281/zenodo.4727166

persistent identifier

http://treatment.plazi.org/id/038B87C3-1901-BE2C-FF3A-6CE2FA589E3E

treatment provided by

Plazi

scientific name

Cybaeus consocius
status

 

Key to the species of the Cybaeus consocius  group

1. Proximal arm of tegular apophysis in ventral view with tip forked ( Fig. 3View FIGURES 1–4, 20View FIGURES 20–22), bifid ( Figs 11View FIGURES 10–12, 21View FIGURES 20–22), or a broad trough ( Figs 18View FIGURES 18–19, 22View FIGURES 20–22); in retrolateral view with smoothly, simply curved dorsal margin ( Figs 4View FIGURES 1–4, 12View FIGURES 10–12, 19View FIGURES 18–19). Proximal loops of copulatory ducts distinctly U-shaped in dorsal view of vulva ( Figs 7View FIGURES 5–9, 15View FIGURES 13–17, 25View FIGURES 23–26)...................................................... 2

- Proximal arm of tegular apophysis in ventral view with tip acuminate and/or spirally twisted ( Figs 28View FIGURES 27–29, 35View FIGURES 33–36, 44View FIGURES 42–45, 55–56View FIGURES 55–58, 61View FIGURES 59–63, 82View FIGURES 80–83) or blunt with long, narrow ventral trough ( Figs 70View FIGURES 68–71, 73View FIGURES 72–73); in retrolateral view, dorsal margin a simple curve ( Figs 36View FIGURES 33–36, 83View FIGURES 80–83) or a more complex compound curve ( Figs 29View FIGURES 27–29, 45View FIGURES 42–45, 62View FIGURES 59–63). Proximal loops of copulatory ducts not distinctly U-shaped in dorsal view ( Figs 32View FIGURES 30–32, 41View FIGURES 37–41, 48View FIGURES 46–51, 66View FIGURES 64–67, 79View FIGURES 74–79)........................................................................................ 4

2(1). Proximal arm of tegular apophysis in ventral view with broad, ventral trough terminating in a small point ( Figs 18View FIGURES 18–19, 22View FIGURES 20–22). Atrium divided ( Figs 23, 26View FIGURES 23–26)............................................................. hummeli Bennett  spec. nov.

- Proximal arm of tegular apophysis in ventral view conspicuously forked ( Fig. 3View FIGURES 1–4) or with inconspicuously bifid tip ( Fig. 11View FIGURES 10–12). Atrium undivided, inverted U-shaped ( Figs 5, 9View FIGURES 5–9, 13View FIGURES 13–17).......................................................... 3

3(2). Proximal arm of tegular apophysis with inconspicuously bifid tip ( Fig. 11View FIGURES 10–12). Atrium convex medially, concave laterally ( Fig. 13View FIGURES 13–17). 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 14–15View FIGURES 13–17)......... hesper Chamberlin & Ivie 

- Proximal arm of tegular apophysis with right-angled fork ( Fig. 3View FIGURES 1–4). Atrium concave ( Figs 5, 9View FIGURES 5–9, 16View FIGURES 13–17). Copulatory ducts attached to lateral margins of atrium ( Figs 6–8View FIGURES 5–9, 17View FIGURES 13–17); extending little or no distance anteriorly from atrium… consocius Chamberlin & Ivie 

4(1). Patellar apophysis with small dorsobasal prominence bearing several peg setae ( Figs 68–69View FIGURES 68–71, 72View FIGURES 72–73). Tibia with small ridge dorsomedially above retrolateral tibial apophysis ( Figs 68–69View FIGURES 68–71). Medial portion of embolus flattened, ribbon-like ( Figs 70–71View FIGURES 68–71). Proximal arm of tegular apophysis blunt with narrow longitudinal trough ventrally ( Figs 70–71View FIGURES 68–71, 73View FIGURES 72–73). Atrium large, nearly as wide as vulva ( Figs 74, 77View FIGURES 74–79). Copulatory ducts broad, prominent; converging from atrium to midline then diverging before turning posteriorly at anterior margin of vulva ( Figs 75–76, 78–79View FIGURES 74–79)................................ ubicki Bennett  spec. nov.

- Patellar apophysis without dorsobasal prominence ( Figs 27View FIGURES 27–29, 34View FIGURES 33–36, 43View FIGURES 42–45, 60View FIGURES 59–63, 81View FIGURES 80–83). Tibia without dorso-medial ridge. Embolus “normal” ( Figs 35View FIGURES 33–36, 44View FIGURES 42–45, 61View FIGURES 59–63). Tip of proximal arm of tegular apophysis acuminate ( Figs 35View FIGURES 33–36, 44View FIGURES 42–45, 61, 63View FIGURES 59–63). Atrium large but not nearly as wide as vulva ( Figs 30View FIGURES 30–32, 37View FIGURES 37–41, 64View FIGURES 64–67) or small ( Figs 46–47View FIGURES 46–51, 52View FIGURES 52–54). Copulatory ducts narrower (or, if broad, then membranous and not prominent); not following trajectory of converging then diverging before turning posteriorly ( Figs 31View FIGURES 30–32, 40View FIGURES 37–41, 47View FIGURES 46–51, 65View FIGURES 64–67)......... 5

5(4). Patellar apophysis with two to six peg setae ( Fig. 43View FIGURES 42–45). Proximal arm of tegular apophysis with prominent ventral keel and terminating in short, slightly twisted tip ( Figs 44–45View FIGURES 42–45, 56View FIGURES 55–58). Atrium small, inconspicuous, its width equal to about 1/3 of the width of the vulva ( Figs 46–47View FIGURES 46–51, 52View FIGURES 52–54)............................................................ penedentatus Bennett 

- Patellar apophysis with 13 to 40 peg setae ( Figs 27View FIGURES 27–29, 34View FIGURES 33–36, 60View FIGURES 59–63, 81View FIGURES 80–83). Proximal arm of tegular apophysis without ventral keel; tip twisted or not ( Figs 28View FIGURES 27–29, 35View FIGURES 33–36, 57View FIGURES 55–58, 61, 63View FIGURES 59–63). Atrium larger, more conspicuous, its width about 1/2 to 2/3 width of the vulva ( Figs 30View FIGURES 30–32, 37View FIGURES 37–41, 64View FIGURES 64–67).............................................................................................. 6

6(5). In retrolateral view, dorsal margin of tegular apophysis a simple curve, lacking a proximal projection ( Figs 36View FIGURES 33–36, 83View FIGURES 80–83). Copulatory ducts usually only contiguous at atrium ( Figs 38, 40View FIGURES 37–41). Femora usually banded..................................... 7

- In retrolateral view, dorsal margin of tegular apophysis a compound curve with a prominent proximally directed projection ( Figs 29View FIGURES 27–29, 61–62View FIGURES 59–63). Copulatory ducts usually contiguous at atrium and medially ( Figs 31–32View FIGURES 30–32, 65–67View FIGURES 64–67). Femora usually unbanded ................................................................................................... 8

7(6). About 13 peg setae around tip of short, anteriorly directed patellar apophysis ( Fig. 81View FIGURES 80–83). Proximal arm of tegular apophysis with simple moderately corkscrewed tip lacking a dorsal process ( Figs 57View FIGURES 55–58, 83View FIGURES 80–83). Spermathecal stalks slightly sinuous, describing an obtuse angle of about 120 ⁰ –130 ⁰ near Bennett’s glands ( Fig. 41View FIGURES 37–41)................................... vulpinus Bennett 

- About 35 peg setae dorsally on long, anterolaterally directed patellar apophysis ( Fig. 34View FIGURES 33–36). Proximal arm of tegular apophysis with simple untwisted tip; tip with small, triangular dorsal process ( Figs 35View FIGURES 33–36, 58View FIGURES 55–58). Spermathecal stalks more strongly sinuous, describing an acute angle of about 55 ⁰ –65 ⁰ near Bennett’s gland ( Fig. 39View FIGURES 37–41)...................... pan Bennett  spec. nov.

8(6). Patellar apophysis long, about as long as width of patella, with 15–25 peg setae ( Fig. 60View FIGURES 59–63). Proximal arm of tegular apophysis with prominent basal projection and strongly twisted tip ( Figs 61–63View FIGURES 59–63). Copulatory ducts and spermathecal stalks elongate ( Figs 65–67View FIGURES 64–67)..................................................................................... simplex Roth 

- Patellar apophysis shorter, length about 2/3 patellar width, with 30–40 peg setae ( Fig. 27View FIGURES 27–29). Proximal arm of tegular apophysis with much less prominent basal projection and a weakly twisted tip ( Figs 28–29View FIGURES 27–29). Copulatory ducts and spermathecal stalks short ( Figs 31–32View FIGURES 30–32)............................................................... opulentus Bennett  spec. nov.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Cybaeidae

Genus

Cybaeus