Cybaeus septatus, Chamberlin & Ivie, 1942

Bennett, Robb, Copley, Claudia & Copley, Darren, 2022, The Californian clade of Cybaeus (Araneae: Cybaeidae) in the Nearctic: the septatus species group and three unplaced species, Zootaxa 5100 (2), pp. 189-223 : 191

publication ID

https://doi.org/ 10.11646/zootaxa.5100.2.2

publication LSID

lsid:zoobank.org:pub:1D783E41-8DF8-4D3C-9853-38C41CCEBB30

DOI

https://doi.org/10.5281/zenodo.6313357

persistent identifier

https://treatment.plazi.org/id/39264D0A-FFE6-AD0E-FF6F-67CDFA2BF82C

treatment provided by

Plazi

scientific name

Cybaeus septatus
status

 

Key to the species of the Cybaeus septatus View in CoL group

(male of C. lockeae spec. nov. unknown)

1. Males.............................................................................................. 2

- Females............................................................................................. 5

2(1). Patellar apophysis with one peg seta much larger than others ( Figs 1–2 View FIGURES 1–4 , 5–7 View FIGURES 5–9 ). Proximal arm of tegular apophysis with tip rounded, swollen, lip–like ( Figs 3–4 View FIGURES 1–4 , 8–9 View FIGURES 5–9 ).................................................. chauliodous Bennett View in CoL

- Patellar peg setae not exactly as above; one peg seta only slightly, if at all, larger than others ( Figs 22 View FIGURES 22–24 , 25 View FIGURES 25–26 ) or isolated in a proximal medial position ( Figs 34 View FIGURES 33–36 , 44 View FIGURES 43–46 , 47 View FIGURES 47–48 ). Proximal arm of tegular apophysis sharply or bluntly pointed ( Figs 23–24 View FIGURES 22–24 , 26 View FIGURES 25–26 , 35 View FIGURES 33–36 , 45 View FIGURES 43–46 , 48 View FIGURES 47–48 )................................................................................................. 3

3(2). Distal arm of tegular apophysis with angular, truncated tip ( Figs 33, 35–36 View FIGURES 33–36 ); proximal arm of tegular apophysis with tip sharply acuminate in ventral view ( Figs 33, 35 View FIGURES 33–36 ), angular in retrolateral view ( Fig 36 View FIGURES 33–36 ); posterior margin of proximal arm strongly concave in ventral view ( Figs 33, 35 View FIGURES 33–36 )........................................................... somesbar Bennett View in CoL

- Distal arm of tegular apophysis with rounded tip ( Figs 23 View FIGURES 22–24 , 45 View FIGURES 43–46 ); proximal arm of tegular apophysis ( Figs 23–24 View FIGURES 22–24 , 26 View FIGURES 25–26 , 45 View FIGURES 43–46 , 48 View FIGURES 47–48 ) with tip sharply ( Figs 45 View FIGURES 43–46 , 48 View FIGURES 47–48 ) or bluntly acuminate ( Figs 23 View FIGURES 22–24 , 26 View FIGURES 25–26 ) in ventral view, but not angular in retrolateral view; in ventral view posterior margin of proximal arm angular ( Figs 45 View FIGURES 43–46 , 48 View FIGURES 47–48 ) or only weakly concave ( Figs 23 View FIGURES 22–24 , 26 View FIGURES 25–26 )......................... 4

4(3). Tip of patellar apophysis relatively smoothly curved with peg setae scattered about dorsal surface, not grouped ( Figs 22 View FIGURES 22–24 , 25 View FIGURES 25–26 ). In ventral view tip of proximal arm of tegular apophysis bluntly acuminate, posterior margin of proximal arm weakly concave ( Figs 23 View FIGURES 22–24 , 26 View FIGURES 25–26 )................................................................... septatus Chamberlin & Ivie View in CoL

- Tip of patellar apophysis pointed, peg setae usually in distinct groups with a group of three at tip ( Figs 44 View FIGURES 43–46 , 47 View FIGURES 47–48 ). In ventral view tip of proximal arm of tegular apophysis sharply acuminate, posterior margin of proximal arm angular ( Figs 45 View FIGURES 43–46 , 48 View FIGURES 47–48 )..................................................................................... … viator Bennett View in CoL spec. nov.

5(1). Atrial openings visible in dorsal view ( Figs 12, 15 View FIGURES 10–15 ).......................................... chauliodous Bennett View in CoL

- In dorsal view atrial openings usually obscured by vulval ducts ( Figs 21 View FIGURES 16–21 , 32 View FIGURES 27–32 , 39, 42 View FIGURES 37–42 )................................. 6

6(5). Atrial openings very small, inconspicuous; parenthesis-like or shepherd’s crook-shaped ( Figs 37, 40 View FIGURES 37–42 )................... 7

- Atrial openings much larger (but may be inconspicuous), slit-like or crook-shaped ( Figs 16–19 View FIGURES 16–21 , 27 View FIGURES 27–32 ).................... 8

7(6). Spermathecal stalks long, convoluted ( Figs 41–42 View FIGURES 37–42 )............................................. somesbar Bennett View in CoL

- Stalks short, nearly linear ( Fig. 38 View FIGURES 37–42 )….................................................. viator Bennett View in CoL spec. nov.

8(6). Spermathecal stalks very short, heads in close proximity to Bennett’s glands ( Figs 20–21 View FIGURES 16–21 )…..... lockeae Bennett View in CoL spec. nov.

- Stalks relatively long, heads well separated from Bennett’s glands ( Figs 29, 32 View FIGURES 27–32 )…............ septatus Chamberlin & Ivie View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Cybaeidae

Genus

Cybaeus

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