Loxosceles

Lotz, L. N., 2017, An update on the spider genus Loxosceles (Araneae: Sicariidae) in the Afrotropical region, with description of seven new species, Zootaxa 4341 (4), pp. 475-494: 476-477

publication ID

https://doi.org/10.11646/zootaxa.4341.4.2

publication LSID

lsid:zoobank.org:pub:723F3227-A214-43F8-B598-CD7DFDB8B48B

persistent identifier

http://treatment.plazi.org/id/03FB8670-D543-674C-FF48-F96657D3FC64

treatment provided by

Plazi

scientific name

Loxosceles
status

 

Key to the Afrotropical species of the genus Loxosceles 

Males

1. Embolus with a flattened spiral towards apex................................................................ 2

- Embolus with thin cylindrical shaft towards apex............................................................ 3

2. Basal part of embolus with a clear ridge ( Fig. 17View FIGURES 1 – 18)................................................... L. spinulosa 

- Basal part of embolus not clearly ridged ( Fig. 2View FIGURES 1 – 18)............................................. L. dejagerae  sp. nov.

3. Cymbium lengthened, much longer than pulp bulb ( Figs 6, 9, 10, 16View FIGURES 1 – 18)............................................. 4

- Cymbium short, not much longer than pulp bulb ( Figs 1, 3–5, 7, 8, 11–15, 18View FIGURES 1 – 18)..................................... 7

4. Lengthened part of cymbium with an angular bend near palp bulb ( Figs 6, 9View FIGURES 1 – 18)...................................... 5

- Lengthened part of cymbium with smooth curve near palp bulb ( Figs 10, 16View FIGURES 1 – 18)...................................... 6

5. Lengthened part of cymbium triangular ( Fig. 9View FIGURES 1 – 18)..................................................... L. meruensis 

- Lengthened part of cymbium cylindrical ( Fig. 6View FIGURES 1 – 18).............................................. L. haddadi  sp. nov.

6. Embolus base narrow at connection with bulb ( Fig. 10View FIGURES 1 – 18)............................................... L. parramae 

- Embolus base broad at connection with bulb ( Fig. 16View FIGURES 1 – 18)............................................. L. speluncarum 

7. Palp cymbium noticeably shorter than tibia length............................................................ 8

- Palp cymbium length close to tibia length................................................................. 14

8. Palp tibia length/height ratio more than 2.5................................................................. 9

- Palp tibia length/height ratio less than 2.5................................................................. 10

9. Embolus base broad at connection with bulb ( Fig. 18View FIGURES 1 – 18).............................................. L. vonwredei 

- Embolus base narrower at connection with bulb ( Fig. 7View FIGURES 1 – 18)........................................... L. irishi  sp. nov.

10. Palp tibia length/height ratio less than 2.0 ( Fig. 12View FIGURES 1 – 18).................................................. L. rufescens 

- Palp tibia length/height ratio more than 2.0 ( Figs 3, 4, 8, 13View FIGURES 1 – 18)................................................... 11

11. Palp bulb width about half tibia length ( Fig. 4View FIGURES 1 – 18).................................................. L. foutadjalloni 

- Palp bulb width about a third tibia length ( Figs 3, 8, 13View FIGURES 1 – 18)...................................................... 12

12. Palp patella less than half tibia length ( Fig. 8View FIGURES 1 – 18)................................................. L. maraisi  sp. nov.

- Palp patella more than half tibia length ( Figs 3, 13View FIGURES 1 – 18).......................................................... 13

13. Palp femur/cymbium ratio more than 4.5 ( Fig. 13View FIGURES 1 – 18).................................................... L. rufipes 

- Palp femur/cymbium ratio less than 4.5 ( Fig. 3View FIGURES 1 – 18)...................................................... L. fontainei 

14. Palp femur shorter than patella + tibia length ( Fig. 15View FIGURES 1 – 18).................................................. L. smithi 

- Palp femur length equal to patella + tibia length ( Figs 1, 5, 11, 14View FIGURES 1 – 18).............................................. 15

15. Embolus narrow at base ( Figs 1, 14View FIGURES 1 – 18)...................................................................... 16

- Embolus broad at base ( Figs 5, 11View FIGURES 1 – 18)....................................................................... 17

16. Embolus tapering from base to apex ( Fig. 1View FIGURES 1 – 18)......................................................... L. bergeri 

- Embolus very thing from base to apex ( Fig. 14View FIGURES 1 – 18)..................................................... L. simillima 

17. Broad basal part of embolus long ( Fig. 11View FIGURES 1 – 18)............................................................ L. pilosa 

- Broad basal part of embolus short ( Fig. 5View FIGURES 1 – 18).................................................. L. griffinae  sp. nov.